KRL is dedicated to
being the worldwide
leader in the design,
manufacture, and
sales of resistive
components to the
commercial and
industrial markets via
a process driven by
being "Fast-To-
Market" coupled with
a quality program
giving "Total
Customer
Satisfaction".
KRL maintains a full
Engineering staff to
meet all your
Mechanical and
Electrical
Engineering needs.
Test facilities include
areas for application-
specific circuit
construction, thermal
cycling, conditioning,
and rapid
prototyping, to name
a few. A fully
equipped machine
shop allows for the
manufacturing of
molds, fixtures, and
custom production
A Snapshot of What We Do Best
KRL participates in partnership and
inventory reduction programs. Customized
manufacturing lead time reduction plans
coupled with "Priority" delivery plans,
minimal stocking allow for weekly or even
same day shipments for use in "Kan Ban" or
"Just in Time" manufacturing philosophies.
KRL's no nonsense approach to
customer service features: direct access to
Engineering Staff; shortened lead times -
high "Priority" orders can be accomplished
within one week; and written responses to
requests for quotes (custom requirements
included), usually within the same day. KRL
's customers welcome KRL as a valued
partner, and better yet, as a friend.
Partnerships come and go, but friends are
forever.
- The Company
- History
- Profile
The Company
KRL Electronics, a division of Bantry Components, Inc., is a
thrity-one year old company which was purchased in 1985, by
Bernard J. Perry, Sr., a resistor pioneer, and sold to Bernard J.
Perry, Jr., in 1992 as a continuation of the Perry's commitment to
the local community and the resistor industry.
KRL offers precision and power wirewound resistors on a
worldwide basis and is known worldide as a supplier of quality
components with on-time delivery.
The KRL customer base includes: the computer, power supply,
health, avionics, instrumentation, telecommunications and space
industries. We are proud of our global reputation and worldwide
recognition. By offering a commitment to manufacturing quality,
continuous renewed product design and innovation, customer
service and a "can-do" attitude, KRL continues to earn and
maintain customer and vendor loyalty.
Our roots go back to 1948 when Mr. Perry Sr. opened the Daven
Company as General Manager, and his subsequent founding of
RCL Electronics in 1960, from which no fewer than four "spin-
off" resistor companies were born. Two companies are local to
New Hampshire, KRL being one of the two.
RCL employed over 600 employees locally under the
administration of Mr. Perry Sr., and eventually went down to less
than 40 employees after Mr. Perry Sr. retired in 1969. Under the
direction of the Perry family, RCL was known to be the world's
leader in Precision Wirewound Resistors, both for sales and
innovation.
Mr. Perry came out of retirement in 1985, recruited Mr. Perry Jr.,
and purchased KRL Electronics, Inc. Starting with 47 employees
and $700,000 in annual sales, KRL Electronics, division of
Bantry Components, Inc. has grown from 47 to 110 employees;
from 1 shift to 2 shifts. With added capacity through automation
it is believed that the headcount will increase to 125-140
employees in the near future.
Over the past sixteen years, KRL has maintained an aggressive
approach to the migration of electronics from "through-hole"
component printed circuit board (PCB) mounting to the new
"SMT" surface-mount configuration for wirewound resistors.
Facility expansions in 1998 saw a 214% increase in
manufacturing space from 7,000 square feet to 17,000 square
feet. The company began using two shifts in 1993 in order to
delay physical plant expansion.
Administration, Sales, Marketing, Finance, Engineering,
Purchasing, Personnel, Shipping, Receiving, Warehousing, and
Manufacturing functions are all housed in our 17,000 square foot
plant.
Manufacturing technologies employed by KRL include: coil
winding, resistance welding, percussive arc welding, resistance
trimming calibration, thermoset transfer molding, epoxy and
cement potting, conformal coating, hermetic sealing, lead
stamping and lead forming. Laboratory facilities provide the
capability for: burn in, life test, thermal shock, moisture
resistance, and temperature coefficient testing to monitor resistor
function, quality and design. A fully functional machine shop
offers milling, grinding, welding, metal heat-treating and lathe
work support manufacturing and design functions. In Q3-1993
the entire manufacturing facility was redesigned and renovated to
create a better workflow.
KRL received ISO-9001 approval in the 4th quarter of 1997. The
maintenance of this approval focuses on "quality at the source," a
philosophy of building quality in from the beginning of the
manufacturing process rather than depending on inspection for
quality at the end of the process. This approval is a requirement
for selling in The European Economic Community, and is fast
becoming required by the larger US manufacturers.
Employees
KRL’s employees number approximately 110, many of whom
have been with KRL for over 15 years. Several KRL employees'
careers date back to RCL and employment under Mr. Perry Sr.,
for up to 40+ years. The knowledge base of KRL’s employees is
extensive, with a tremendous level of cross training in the many
resistor-manufacturing processes.
The State of New Hampshire-Business Visitation Program
opened the door for KRL to participate in various programs
involving DRED, DES, the New Hampshire Job Training
Council, and the OSHA, including the OSHA safety section's
"Consultation Program". Mr. B.J. Perry Jr. was appointed to
Governor Merrill's Worker's Compensation Study Committee
because of his devotion to his employees, his commitment to
worker's safety, and the company's prospects for future
employment and company expansion in New Hampshire.
Future
A. New products/Applications including additional Surface
Mount Components
1. Surface mount wirewounds, capable of low values and high
accuracy, and used in small computer peripheral equipment
and in laptops. Exported from NH to the world.
2. Pulse-withstanding resistor products used in
telecommunications industry (phones and switching
circuits). Guard against damage caused by lightning surges
or power crossovers. Used in new fiber optic systems being
used by old Eastern Block countries updating their
communications systems in the former East Germany, and
the republics of the former Soviet Union, etc.
3. Low Ohms current shunt values to .0001 ohm -- used by
manufacturers of smaller generating equipment, including
generators intended as home back-ups to existing power
systems in developing countries.
- The Company
- History
- Profile
KRL/Bantry Components History
Formed in 1970 and located on Bridge Street
Primary product line: Precision Wirewounds and Temperature
Sensors.
Moved to Grenier Airpark 1980
Added Power Wirewounds
Reorganized by Bernard J. Perry 1985 and purchased in 1986
Background:
Owned and operated RCL 1960-70; VP of the Daven Company late
50’s; General Manager Liable Manufacturing early 1950's
Increased manufacturing capacity of existing wirewound products and
added specialty wirewound and metal film product lines in:
a) Telecommunication
b) Industry
c) Computer Industry
d) Test and Measurement Industry
e) Automotive Industry
f) Defense Industry
July 31, 1992 Ownership transferred to Bernard J. Perry Jr.
(Executive VP/General Manager 1989 to July 1992)
- The Company
- History
- Profile
KRL ELECTRONICS
DIVISION OF BANTRY COMPONENTS INC.
Company Name: KRL Electronics Division
Bantry Components, Inc.
Company Address: 160 Bouchard Street
Manchester, NH 03103-3399
USA
Telephone: 603-668-3210
Fax: 603-624-0634
Contacts: B.J. Perry Jr. President
Verna Perry VP-Operation
George Maheu VP-Finance
Maureen Demers VP-Sales Manager
Don Finkey VP-Engineering
Major Products: Wirewound Resistors SIC=3676
Power -- Axial, Radial, SMT
Precision -- Axial, Radial, SMT
Business Type: Corporation
Year Started: 1970
Plant Location Manchester, NH 22,000 Square Feet
Employees: Total: 110 Direct: 95 Indirect: 15
Shifts: 1…3
% Capacity Utilized: 80%
- Precision
- Power
- Packaging
( Tape & Reel )
PRECISION RESISTOR CATEGORIES
Choose a category to display below:
Surface Mount Precision Wirewound Resistors (S
Series)
Axial Precision Wirewound Resistors (500 & EC
Series)
Temperature Compensating Wirewound Resistors
Printed Circuit Style Wirewound Resistors (PC & K
Series)
Hermetically Sealed Precision Wirewound Resistors
SURFACE MOUNT PRECISION WIREWOUND RESISTORS
GENERAL SPECIFICATIONS
PRECISION (SU)
UL94-V0 MOLDED CHIP DESIGN
LOW TC'S & TIGHT TOLERANCES
TEMPERATURE COMPENSATING TC'S to +6000 PPM
AVAILABLE
TEMPERATURE COEFFICIENT
● SP SERIES: ±90 PPM/°C less than 1 ; ±50 PPM/°C 1 to 10 ;
±30 PPM/°C 10 to 100 ; ±20 PPM/°C above 100
● SL SERIES: ±40 PPM/°C + 2200 PPM/°C / VALUE IN
MILLIOHMS
● SU SERIES: ±25 PPM/°C 1 to 10 ; ±10PPM/°C above 10
(Avail. to
± 2PPM/°C)
KRL
STYLE WATTS STD
TOL OHMIC
RANGE WORKING
VOLTAGE
SU-1 0.125 ± .005%
thru
± 1.0%
1.0 -
300k ; 100
SU-2 0.25 1.0 -1M ; 300
SU-3 0.5 1.0 -2M ; 400
Dimensions & Suggested Land Patterns (per ANSI/IPC-SM-782 Guidelines)
KRL STYLE A ± .005" B ± .015" C ± .010" D ± .015" E ± .005" F ± .005" G ± .015" H I J X Y
S-1/2 .190 .215 .040 .100 .093 .125 .050 .085 .255 .170 .065 .085
SL-1 .240 .255 .035 .112 .107 .150 .050 .150 .310 .230 .065 .085
SP-1 .240 .255 .035 .112 .107 .150 .050 .150 .310 .230 .065 .085
SU-1 .250 .272 .050 .140 .130 .140 .060 .120 .310 .215 .075 .095
SU-2 .435 .455 .070 .210 .200 .230 .065 .280 .510 .395 .090 .115
SU-3 .575 .600 .050 .255 .250 .275 .075 .465 .655 .560 .105 .095
PACKING
S1/2 - 12mm
750 pcs = 7" Reel
2000 pcs = 13" Reel
SU-1 - 16mm
500 pcs = 7" Reel
2000 pcs = 13" Reel
SU-2 - 24mm
1000 pcs = 13" Reel
SU-3 - 32mm
600 pcs = 13" Reel
ENVIRONMENTAL PERFORMANCE (KRL TYP. CHANGE)
SU SERIES SP,SL SERIES
SOLDER REFLOW PROFILE 0.005% 0.05%
LOAD LIFE 0.1% 2%
MOISTURE RESISTANCE 0.02% 0.2%
THERMAL SHOCK 0.02% 0.2%
DIELECTRIC WITHSTAND 1000V AC 1000V AC
SHORT TERM OVERLOAD 0.005% 0.2%
SOLDERABILITY 95% COVERAGE
FLAMMABILITY UL94-V0 / ASTM NEEDLE FLAME
(click graphs to enlarge)
- Precision
- Power
- Packaging
( Tape & Reel )
POWER WIREWOUND RESISTOR CATEGORIES
Choose a category to display below:
Power Wirewound Resistors (AK, P & C Series)
Non-Inductive Low Ohm Resistors (NP Series)
Ceramic Encased Power Resistors (CB, LB & V
Series)
Non Flame Fusible Metal Film Power Resistors (FPR
Series)
Multipurpose Power Resistors (OX & OXH Series)
Heat Sink Power Resistors (AT Series)
Surface Mount Power Resistors (S Series)
Temperature Compensating Power Resistors
POWER WIREWOUND RESISTORS
ELECTRICAL SPECIFICATIONS:
● Resistance Tolerance: 5%, 3%, 1% std
(Accuracies available to .03%)
● Standard Resistance Range: .1 to maximum listed.
● Temperature Coefficient: 90ppm/°C less than 1 ; 50 ppm/°C
1 to 10 ; 30 ppm/°C 10 to 100 ; 20 ppm/°C 100 and
above.
● Short Term Overload: 5 seconds at 5 times rated power.
● Operating Range: -55°C to + 250°C (U Rating) or +350°C (V
Rating)
● Covering: Flame Retardent Silicone (Molded & Coated)
● Windings: Space wound on Ceramic or Alumina Oxide Cores.
Noninductive windings are available & identified by adding an
"N" in front of the style number.
● Divide maximum resistance by 2 for noninductive windings.
● "U" and "V" wattage ratings and derating curves are based on
MIL-PRF-26 characteristics. "V" ratings are intended for 5%
tolerance units, and result in operation at a hotspot of
approximately 350°C; "U" ratings govern 3% through .1%
tolerances and result in a hotspot of approximately 250°
(click graph to enlarge)
Space Miser Power Resistors -- AK Series
KRL
STYLE
MIL-
PRF-
26E
WATTAGE
RATING MAXIMUM
WORKING
VOLTAGE DIELECTRIC
WITHSTAND
MAXIMUM
RESISTANCE IN
OHMS
DIMENSIONS
LEAD
AWGU V LENGTH
± .062 DIAMETER
± .032
AK-1 RW-81 1.0 -- 58V 500V 3.4K .250 .094 24
(.020)
AK-2 1.5 -- 82V 500V 4.5K .312 .094 24
(.020)
AK-3 RW-80 2.25 -- 150V 500V 10K .406 .094 24
(.020)
AK-5 4.0 5.0 261V 1KV 22K .560 .158 20
(.032)
AK-5C 5.0 6.5 181V 1KV 32K .500 .250 18
(.040)
AK-6 6.0 7.0 295V 1KV 45K .625 .250 18
(.040)
AK-10 7.0 10.0 444V 1KV 90K .875 .312 18
(.040)
Wirewound Power Resistors -- P & C Series
KRL
STYLE
MIL-
PRF-
26
MIL-
PRF-
39007
WATTAGE MAXIMUM DIELECTRIC
MAXIMUM
RESISTANCE
IN OHMS
DIMENSIONS
LEAD
AWG
RATING WORKING WITHSTAND LENGTH DIAMETER
U V VOLTAGE VOLTAGE ± .062 (±
.010) ± .032 (±
.010)
C-
1/4 .5 1.0 58V 500V 3.4K .250 .094 24
(.020)
(P-
1/2) C-
1/2 .75 1.2 73V 500V 4.5K .280 (.300) .094 (.120) 24
(.020)
(P-
1A) C-
1A RW-
70 1.0 1.5 122V 500V 10K .406 (.425) .094 (.120) 24
(.020)
C-
1B 1.1 1.6 139V 500V 12K .530 .094 24
(.020)
(P-
1C) C-
1C 1.0 1.5 87V 500V 5K .330 (.360) .094 (.120) 24
(.020)
C-
1D 3.25 4.5 406V 500V 38K .700 .110 20
(.032)
C-2 1.5 2.0 141V 1KV 10K .385 .187 20
(.032)
C-
2A RW-
79 3.0 3.75 257V 1KV 22K .560 .187 20
(.032)
C-
2B RWR-
71 3.25 4.75 444V 1KV 42K .812 .187 20
(.032)
C-
2C 3.0 3.5 181V 1KV 32K .500 .250 20
(.032)
C-
2D RW-
69 2.5 3.0 212V 1KV 20K .500 .210 20
(.032)
C-
2E 3.0 3.75 261V 1KV 22K .560 .158 20
(.032)
C-
2F 2.5 3.0 210V 1KV 20K .490 .158 20
(.032)
C-3 4.0 5.5 295V 1KV 45K .625 .250 20
(.032)
C-4 5.0 6.0 444V 1KV 65K .875 .250 20
(.032)
C-5 RW-
74 RWR-
74 5.0 6.0 444V 1KV 90K .875 .312 18
(.040)
C-6 RW-
67 6.0 6.5 488V 1KV 100K 1.000 .312 18
(.040)
C-7 7.0 8.0 730V 1KV 100K 1.200
±.094 .312
±.062 18
(.040)
C-
7A RW-
55 7.5 9.0 800V 1KV 150K 1.375
±.094 .375
±.062 18
(.040)
C-
10A RW-
78 RWR-
78 10.0 12.0 1KV 1KV 275K 1.780
±.094 .375
±.062 18
(.040)
P = Molded ( ); C = Coated
- Precision
- Power
- Packaging
(Tape & Reel)
TAPE & REEL CATEGORIES
Choose a category to display below:
Axial Lead Resistors (Tape & Reel)
Surface Mount Resistors (Tape & Reel)
AXIAL LEAD RESISTORS (TAPE & REEL)
COMPONENT BODY
DIAMETER
COMPONENT PITCH
"A"
[ ± .020" (0.050mm)]
TAPE SPACING "B" ± .059" (1.5mm)
MIN: 1.75" (44.45mm) MAX: 3.312"
(84.12mm)
.000" (000mm) to .197"
(5.00mm) .197" (5.00mm)
CLASS I CLASS II CLASS III
.198" (5.00mm) to
.394" (10.00mm) .394" (10.00mm)
.395" (10.00mm) to
.591" (15.00mm) .591" (15.00mm) 2.063"
(52.4mm) 2.50" (63.5mm) 2.874"
(73mm)
TEMPERATURE COEFFICIENT ORDER CODE:
KRL ORDER
CODE
TEMPERATURE
COEFFICIENT OF
RESISTANCE (TCR) IN
PPM/°C
MAXIMUM
TEMPERATURE RANGE
IN °C (4)
RESISTANCE RANGE
IN OHMS
1(1)
0 ± 10 (±20)
0 ± 15 (±30)
0 ± 25 (±50)
0 ± 90 (±90)(5)
-55 to +145
-55 to +145
-55 to +145
-55 to +145
100 ohms & over
10 ohm to 100 ohms
1 ohm to 10 ohms
less than 1 ohm
2 0 ± 1 +20 to +40 100 ohms & over
3 0 ± 3 0 to +85 100 ohms & over
4 0 ± 5 -15 to +125 50 ohms & over
A-T(2) +80 to +6000 -55 to +145 ALL VALUES
X(3) SPECIAL SPECIFY SPECIFY
(1) Standard TCR Characteristic, per catalog (Precision and Power TCR’s listed).
(2) High TCR. Refer to Temperature Compensating Resistors for exact TC.
(3) Special TCR. User order code X and specify temperature range and
temperature coefficient.
(4) Temperature range for Power Resistors is from -55°C to +275°C, for order
code 1.
(5) Standard Temperature Coefficient for Power Wirewounds.
LEAD MATERIAL ORDER CODE:
KRL
ORDER
CODE
LEAD
MATERAL
(TINNED) SOLDERABLE WELDABLE
LOW
THERMAL
EMF(3)
LOW LEAD
RESISTANCE(4) HIGH
STRENGTH
C(2) COPPER X X 2.5 X 1.0
N NICKEL, Gd. A X X 70 4.7
A(1) COPPERWELD X X X 3.5 X 2.3 X
(1) Standard lead material for all Precision and Power Wirewound Resistors.
(2) Standard lead material for Low Ohm and Surface Mount Resistors plus
Precision Resistors below 25ohms.
(3) Thermal EMF vs. lead material given in microvolts/°C from ±0°C to +100°C
(4) Low lead resistance may be a significant factor. These figures represent lead
resistance ratio to copper, since copper is the lowest.
TOLERANCE ORDER CODE:
KRL ORDER CODE ABSOLUTE TOL AT +25°C ± 2°C. R.H. = 50% MAX.
K ± 10%
J± 5%
H± 3%
F ± 1%
D ± 0.5%
C ± 0.25%
B ± 0.1%
A ± 0.05%
Q ± 0.02%
T ± 0.01%
Z ± 0.005%
X NON-STD **
** Specify Exact Tolerance
KRL ORDER CODE SYSTEM:
This order code system has been set up to enable you to specify any of the standard or optional specifications shown in this
catalog. This easy to use ordering method incorporates: Style; Temperature Coefficient; Resistance Value; and Tolerance.
NOTE: If you order a resistor by specifying only the style, Resistance, Value and Tolerance… KRL will manufacture to standard
specification unless otherwise indicated.
(1) No symbol here is for standard wound resistors. "H" High Speed; "S"
Special Purpose; "N" Non-inductive (Power Resistors Only – The
standard method for winding for Precision Resistors is non-inductive).
(2) Style indicates the configuration, size, and power rating, as specified
on the pertinent website page.
(3) Lead Material… See Lead Material Chart above.
(4) Temperature Coefficient… See Temperature Coefficient Chart above.
(5) Resistance Value… Specify resistance in ohms. Most values are
specified via a 4-digit code: the first three digits are significant figures and
the fourth digit is the multiplier, i.e., the number of zeroes to follow (e.g.,
250K = 22503; 2.55K = 2551; 255 = 2550). For values under 100 , ‘R’
is used for the decimal (e.g., 39 = 39R0; .025 = R025) For values with
more then 3 significant figures, use additional digits as necessary (e.g.,
255.5K = 25552; 2.555K = 25550)
(6) Tolerance... See Tolerance Order Code above.
Exact interchangeability is not implied, as there are some minor
differences
which may exist.
KRL DALE ULTR-
ONIX TEPRO IRC/
RCL TEL
LABS KELVIN REIDON OHMITE RCD
533 102A 7003 SA17 273-P MA200
534 MWA-8 TB-34 7004 SA29 460-P MA201
535 MWA-10 TB-35 7005 SA24 301-P SM3 MA202
538 184A 7007 SA21 EP-20 SM15 MA206
539 SM5
540 185A TB-40 SA10 MA207
550 202A 7008 SA19 304-P
555 WWA-22 204A TB-55 7009 SA16 417-P 100 SA100
560 WWA-23 205A TB-60 7010 SA1 467-P 101 SA101
565 WWA-24 207A TB-65 7020 SA2 812-P 102 SA102
570 WWA-26 307A TB-70 7030 SA3 815-P SA104
575 WWA-36 310A TB-75 7040 SA4 254-P SA105
580 WWA-38 510A TB-80 7050 SA5 EP-27 106 SA109
585 WWA-48 515A TB-58 7060 SA6 EP-28 107 SA110
590 WWA-
412 7077 SA7 SA111
PC-
50 WWA-
416 203PA 4060 PW1 PC401
PC-
51 WWP-
225 204PA 4061 PW2 131PC PC402
PC-
55 4065 PW20 120PC PC406
K-
250 102P S-40 WIN II/R452 K447 SM8
K-
300 WWP-18 101P S-100 WIN I/R451 K747 PC451
K-
500 134P K446 SM9
NP-
1A LVR-2 TL01 LOB-1 TL01 KM100
NP-
2A LVR-3 TL03 LOB-3/L03 TL03 13F/13
NP-
3 FT1 KM300
NP-
5A LVR-5 TL05 LOB-5/LO5 TL05 KM500 15F/15
S-
1/2 WSC-1/2 SM1/2 MWM1/2
S-1 WSC-1 TKP1 MSM-1 SM1 SM1 RW1SOB MWM1
S-2 WSC-2 TKP2 MSM-2 SM2 SM2 RW2SOD MWM2
S-3 SM3
LB4-
3 TCK-3 4LPW-3 LVF3
LB4-
5CPSL-5 TCK-5 4LPW-5 LVF5
LB4-
7CPSL-7 4LPW-7 LVF7
LB4-
10 CPSL-10 TCK-10 4LPW-10 LVF10
V-3 CPC-3 TCV3 PWR-3 PV3
V-5 CPC-5 TCV5 PW5-5 TW5 PV5
V-10 CPC-7 TCV10 PWR-7 TW7 PV7
V-15 PWR-10
FTS-
1 RCS TP1 RCS03
FTS-
2SPR2093 TP2
AK-
3G-3-80 MS-2 TG3 B3 UB3 232
AK-
5G-5 TG5 B5 UB5 235
AK-
5C G-5C B5A
AK-
10 G-10 B10 272
C-
1/4 RS-1/4 CS-05 TS.125 AS1/4/T1/2A EL1/4 KS205 UT1/2A 110
C-
1/2 RS-1/2 CS1 TS.5 AS1/2/T1/2 EL1/2 KS050 UT1/2 115
C-
1A RS-1A CS2 TS1A AS-1/T-1A EL1A KS100 UT1A 41/81 125
C-
1C T-1C EL1C
C-2 TS1 T-2 EL2H 42 133
C-
2A CW-2B CS4 TS2B AS-2B/T-2B-
79 EL2I KS300 43/83 140
C-
2D CW-2C CS3 TS2A AS-2/T2C EL2D UT2A 135
C-
2C TS2C T-2A EL2E KS250 UT2C 150
C-3 CW-2
RS-2 TS3 AS-3/T-3 EL2 KS350 UT3 155
C-4 CS6 UT4
C-5 CW-5
RS-5 TS5 AS-5/T-5 EL5 KS500 UT5 45/83 160
C-7 CW-7
RS-7 CS8 TS7 AS-7/T-7 EL7 170
C-
7A CS9 T-7A EL10A KS700
C-
10A CW-10
RS-10 CS10 TS10 AS-10/T-10 KS1000 UT10 40/80 175
AT-
10 RH-10 RH10 TM10 AL10 EH10 KC1000 UAL10 810 610
AT-
25 RH-25 RH25 TM25 AL25 EH25 KC2500 UAL25 825 620
You may contact KRL Bantry by phone:
(603) 668-3210
fax (603) 624-0634
By mail:
KRL / Bantry Components, Inc.
160 Bouchard Street
Manchester, NH 03103-3399
Or by Email:
sales@krlbantry.com
Administration
BJ Perry - President / CEO: bj@krlbantry.com
Verna Perry - VP Operations: verna@krlbantry.com
Teresa Pihl - Finance: terry@krlbantry.com
Sales
Maureen Demers - VP Sales: maureen@krlbantry.com
Steve Lende - Sales: steve@krlbantry.com
Engineering
Don Finkey - Engineering Manager: don@krlbantry.com
Teresa Pihl - Quality Director: terry@krlbantry.com
KRL has sales representatives
all across the country. To find
the closest to you, select on the
appropriate region.
D.A. Crowley & Associate
3 Overlook Drive
Amherst, NH 03031
Alan Ahern
Phone: (603)-673-7050
Fax: (603)-672-0817
1719 Route 10, Suite 218
Parsippany, NJ 07054
Chad Wallace (908)
Tel: (201)-993-9292
Fax: (201)-993-9183
Hartford CT
1331 Highland Avenue, Suite 2
Cheshire, CT
Phone: (203)-272-7880
Fax: (203)-272-7882
ECI
2240 East Central Avenue
Miamisburg, OH 45342
Phone: (937)-866-3340
Fax: (937)-433-3147866-3371
JLS Associates
PO Box 52233
9320 Foxburrow Courts
Raleigh, NC 27612
Jim Sanders
Lynn Boxwell
Phone: (919)-846-6445
Fax: (919)-848-0750
Tech Sales Specialists, Inc.
1489 West Palmetto Park Road, Suite #420
Boca Raton, FL 33486
Phone: (407) 391-3718
Fax: (407) 750-1178
Mobile: (305) 480-7685 (Voice Mail)
Claybrook & Associates
11520 North Central Expressway #232
Dallas, TX 75243
Phone: (214) 342-8342
Fax: (214) 342-3949
Austin
8868 Research Blvd., Suite 506
Austin, TX 78758
Phone: (512) 467-2040
Fax: (512) 467-2049
E.I. Sales
1651 Pohl Road
Mankato, MN 56001
Robert Else
Phone: (507)-345-7714
Phone: (507)-345-7751
Fax: (507)-345-7559
Territories Covered:
North Dakota, South Dakota, Minnesota and Western
Wisconsin Bounded on the east by the Counties of BayField,
Sayer, Rusk, Chippewa, Eau Claire, Trempealleau and La
Cross inclusive of Zip Codes beginning with 540, 546, 547
and 548.
Brad Oglesby
Covering:
Iowa and Missouri
Aspen Sales, Inc.
452 Burbank Street
Broomfield, CO 80020
Phone: (303) 404-2308
Fax: (303) 404-2342
Email: ASPENCOLO@msn.com
Olsen Technical Sales
3020 Issaquah - Pine Lake
Issaquah, WA 98027
Mike Olsen
Phone: (206)-883-7792
Fax: (206)-883-9478
Francisco & Associates
3510 Bow Drive
P.O. Box 477
Copperopolis, CA 95228-0477
Berte Francisco
Pat Francisco
Phone: (209)-785-4607
Fax: (209)-785-4606
Area Codes in North California covered by Francisco &
Associates:
707, 916, 702, 415, 510, 408, 209
Acorn Electronics
170-7 Central Ave
Farmingdale, NY 11735
(631) 694-5464
fax (631) 693-5512
Contact: Bob Urquhart
Justin Electronics
3300 Highway 421 North
Wilmington, NC 28401
(910) 763-1234
fax (910) 763-0584
Contact: Pete Tumolo
Ad-Tech Electronics
4400 Lewis Road
Harrisburg, PA 17111
(717) 238-5484
fax (717) 238-7477
Contact : Phil
Jaro/NRC Electronics
6600 Park of Commerce Blvd
Boca Raton, FL 33487
(561) 241-8600
fax (561) 241-3328
Contact: Denise Sikorski
Armor/Coughlin
35 Otis Street
Westboro, MA
(508) 870-5000
fax (508) 870-5710
Semtex
74 Commercial Street
Freeport, NY 11520
(516) 223-0200
fax (516) 623-7082
Contact: Larry Vigeliotti
Assertive Tech
164 Westford Road
Tyngsboro, MA 01879
(800) 649-1284
(508) 649-2233
Fax (508) 649-7566
Contact: Charlie DeNatale
Stock Electronics
6110 Blvd. of Champions
North Lauderdale, FL 33068
(954) 978-9875
fax (954) 978-9884
Contact: Kate Ollert
- Precision
- Power
- Packaging
( Tape & Reel )
PRECISION RESISTOR CATEGORIES
Choose a category to display below:
Surface Mount Precision Wirewound Resistors (S
Series)
Axial Precision Wirewound Resistors (500 & EC
Series)
Temperature Compensating Wirewound Resistors
Printed Circuit Style Wirewound Resistors (PC & K
Series)
Hermetically Sealed Precision Wirewound Resistors
TEMPERATURE COMPENSATING WIREWOUND RESISTORS
KRL High T.C. Resistors are available in any of the packages
listed in this Catalog
GENERAL SPECIFICATIONS
● RESISTANCE RANGE - 10 to 500K
● TOLERANCE - Standard from 10%, 5%, 3% and 1%.
Accuracies to 0.1% are available. Consult factory for special
requirements.
● TEMPERATURE RANGE - From -55°C to +145°C, +25°C ref.
● TEMPERATURE COEFFICIENTS - Available from
+80PPM/°C to +6000PPM/°C (see table below). Use Order
Code A thru T for standard T.C.'s shown.
● SPECIAL TEMPERATURE COEFFICIENTS - If you need a
special, Non-standard T.C., Use Order Code X and specify the
exact T.C. Required and temperature range of operation with
25°C as reference temperature. (Factory must approve all non-
standard T.C.'s)
● APPLICATIONS - Since there are many packages that a High
T.C. Resistor can accommodate, it is impossible to show all
types. Most often a customer will have a unique situation and
our engineering department will gladly aid in any design and
development of customer requirements. KRL High T.C.
Resistors have found their way into Power Supplies, Motor
Controllers, Computers, Electronic Circuits for D to A And A to
D converters, Temperature Sensors for the Medical
Electronics Field, Aircraft Systems, Aerospace Flight Modules,
and in Automotive Electronic Ignition Systems.
KRL
ORDER
CODE
TEMPERATURE
COEFFICIENT
(2) MAXIMUM
RESISTANCE IN
PERCENT
COLD
RANGE IN
PPM/C -55C
to +25C
HOT RANGE
IN PPM/C
+25C to
+125C
A + 80 ± 20 + 80 ± 20 80
B + 100 ± 10 + 100 ± 10 80
C + 120 ± 10 + 120 ± 10 80
D + 140 ± 30 + 140 ± 30 80
E + 180 ± 30 + 180 ± 30 80
G + 290 ± 30 + 290 ± 30 25
H + 380 ± 40 + 400 ± 40 70
J + 450 ± 50 + 450 ± 50 60
K + 700 ± 200 + 700 ± 200 60
L + 850 ± 80 + 850 ± 80 50
†M + 1000 ± 100 + 1000 ± 100 50
†N + 1500 ± 200 + 1400 ± 200 50
†P + 2600 ± 200 + 2600 ± 200 50
†Q + 3200 ± 300 + 3500 ± 300 40
†R + 4000 ± 400 + 4500 ± 400 5
†T + 5000 ± 300 + 6000 ± 300 5
X (1) SPECIAL T.C., SPECIFY EXACT TCR.
SUBJECT to FACTORY APPROVAL
TABLE INFO
(1) KRL will
manufacture to any
T.C.R. to meet
customer
specifications.
(2) Maximum
resistance in percent
should be applied to
the style chosen in
the normal catalog-
listing column
marked Maximum
Resistance.
† Indicates most
readily available
T.C.R.'s.
- Precision
- Power
- Packaging
(Tape & Reel)
TAPE & REEL CATEGORIES
Choose a category to display below:
Axial Lead Resistors (Tape & Reel)
Surface Mount Resistors (Tape & Reel)
SURFACE MOUNT RESISTORS (TAPE & REEL)
CARRIER TAPE DIMENSIONS:
EIA-481-
AS1/2
(12MM) S1
(16MM) S2
(24MM) S3
(32MM)
A0.128 ±
.004 .154 ±
.004 .245 ±
.004 .290 ±
.004
B0.215 ±
.004 .274 ±
.004 .494 ±
.004 .615 ±
.004
K0.123 ±
.004 .145 ±
.004 .222 ±
.004 .280 ±
.004
P.315 ±
.004 .315 ±
.004 .472 ±
.004 .630 ±
.004
P2.079 ±
.002 .079 ±
.002 .079 ±
.002 .079 ±
.002
P0.157 ±
.004 .157 ±
.004 .157 ±
.004 .157 ±
.004
D.059 ±
.004 .059 ±
.004 .059 ±
.004 .059 ±
.004
D1.059 MIN .059
MIN .059
MIN .079 MIN
E.069 ±
.004 .069 ±
.004 .069 ±
.004 .069 ±
.004
F.217 ±
.004 .295 ±
.004 .453 ±
.004 .559 ±
.004
W.472 ±
.012 .630 ±
.012 .945 ±
.012 N/A
W1.375
MAX .532
MAX .852
MAX 1.008
MAX
T1.004
MAX .004
MAX .004
MAX .004
MAX
T.016
MAX .016
MAX .016
MAX .016
MAX
REEL DIMENSIONS:
TAPE A ± 1/32" B ± .078" C MAX D ± .032
12mm 7" .550" .700" 2.350"
13" .550" .780" 3.920"
16mm 7" .670" .830" 2.350"
13" .670" .900" 3.920"
24mm 13" .970" 1.200" 3.920"
32mm 13" 1.350" 1.580" 3.920"
- Precision
- Power
- Packaging
( Tape & Reel )
PRECISION RESISTOR CATEGORIES
Choose a category to display below:
Surface Mount Precision Wirewound Resistors (S
Series)
Axial Precision Wirewound Resistors (500 & EC
Series)
Temperature Compensating Wirewound Resistors
Printed Circuit Style Wirewound Resistors (PC & K
Series)
Hermetically Sealed Precision Wirewound Resistors
AXIAL PRECISION WIREWOUND RESISTORS
GENERAL SPECIFICATIONS
Resistance range: 1 to maximum listed
Standard Tolerances: .005%, .01%, .02%, .05%, .1%, .2%, .5%,
& 1%
Standard Temperature Coefficient:
● 1 to <10 : ± 25PPM
● 10 to <100 : ± 15PPM
● 100 and over: ± 10PPM
● (TC's available to ± 2PPM (25 and over))
Operating Temperature range: -65°C to 145°C
Temperature Compensating TC's from +80 through +6000 PPM
TC Matching to ±0.5 PPM/°C @ 25°C
Custom Designs Welcome
PERCENT OF RATED POWER
KRL Precision Wirewound Resistor Derating Curve
500 and EC Series resistors must be
derated for tolerances below 0.1%,
and for elevated temperatures. Use
the curve for the desired tolerance,
and, knowing the maximum ambient
temperature during use, determine
the maximum allowed percentage of
rated power from the graph. (click graph to enlarge)
AXIAL LEAD RESISTORS --- 500 SERIES
KRL
STYLE MIL-R-
93 MIL-R-
39005
DIMENSIONS POWER IN WATTS
MAXIMUM
RESISTANCE
LENGTH
± .015 DIAMETER
± .015 LEAD
AWG MIL
125°CCOMM
125°CMAXIMUM
VOLTAGE
532 0.200 0.100 24 0.025 0.05 100 100 K
†533 0.260 0.100 24 0.05 0.1 100 150 K
†534 0.300 0.100 22 0.05 0.1 100 150 K
†535 0.250 0.125 22 0.065 0.125 150 300 K
536 0.312 0.125 22 0.075 0.15 200 400 K
†537 0.375 0.125 22 0.1 0.2 200 500 K
†538 0.375 0.187 22 0.125 0.25 300 1 Meg
539 0.250 0.187 22 0.115 0.225 250 550 K
†540 RBR-74 0.500 0.187 22 0.175 0.35 300 1.5 Meg
550 RBR-75 0.295 0.250 22 0.125 0.25 200 1.5 Meg
†555 RB-
56 RBR-56 0.375 0.250 20 0.175 0.35 300 1.5 Meg
†560 RB-
55 RBR-55 0.500 0.250 20 0.25 0.5 400 2 Meg
†565 RB-
54 RBR-54 0.750 0.250 20 0.375 0.75 500 3.5 Meg
570 RB-
53 RBR-53 0.750 0.375 20 0.45 0.9 600 4 Meg
575 RB-
52 RBR-52 1.000 0.375 20 0.75 1.5 750 5 Meg
578 0.500 0.500 20 0.33 0.66 400 2 Meg
580 RB-
57 RBR-57 1.000 0.500 20 0.85 1.75 850 10 Meg
585 RB-
58 1.500 0.500 20 1 2 1.5KV 15 Meg
ECONOMY LINE AXIAL LEAD RESISTORS --- EC SERIES
KRL STYLE MIL-R-
10509 LENGTH DIAMETER LEAD
AWG POWER in
WATTS MAXIMUM
VOLTAGE MAX RESISTANCE
†EC-10 RN-55 0.250 0.125 22 0.25 200 100 K
†EC-20 RN-60 0.375 0.125 22 0.4 300 150 K
†EC-25 0.375 0.187 22 0.5 325 175 K
†EC-30 RN-65 0.500 0.187 22 0.75 350 200 K
EC-40 RN-70 0.750 0.250 20 1 400 300 K
EC-50 RN-75 1.000 0.375 20 1.5 600 500 K
†Indicates most popular types.
- Precision
- Power
- Packaging
( Tape & Reel )
PRECISION RESISTOR CATEGORIES
Choose a category to display below:
Surface Mount Precision Wirewound Resistors (S
Series)
Axial Precision Wirewound Resistors (500 & EC
Series)
Temperature Compensating Wirewound Resistors
Printed Circuit Style Wirewound Resistors (PC & K
Series)
Hermetically Sealed Precision Wirewound Resistors
PRINTED CIRCUIT STYLE WIREWOUND RESISTORS
GENERAL SPECIFICATIONS
Standard Tolerances: .005%, .01%, .02%, .05%, .1%, .2%, .5%,
& 1%
Standard Temperature Coefficient:
● 1 to <10 : ± 25PPM
● 10 to <100 : ± 15PPM
● 100 and over: ± 10PPM
● (TC's available to ± 2PPM (25 and over))
Operating Temperature range: -65°C to 145°C
TC Matching to ±0.5 PPM/°C @ 25°C
Custom Designs Welcome
PERCENT OF RATED POWER
KRL Precision Wirewound Resistor Derating Curve
PC and K Series resistors must be
derated for tolerances below 0.1%,
and for elevated ambient
temperatures. Use the curve for the
desired tolerance, and, knowing the
maximum ambient temperature
expected during use, determine the
maximum allowed percentage of
rated power from the graph. (click graph to enlarge)
PRINTED CIRCUIT RESISTORS --- PC SERIES
KRL
STYLE MIL-R-
93
DIMENSIONS POWER IN WATTS
MAXIMUM
RESISTANCE
HEIGHT
± .032 DIAMETER
± .015
LEAD
SPACING
± .010 LEAD
AWG
MIL
125°CCOMM
125°CMAXIMUM
VOLTAGE
†PC-50 RB-71 0.312 0.250 0.200 22 0.125 0.250 300 500 K
PC-51 0.375 0.250 0.200 22 0.125 0.250 300 650 K
PC-52 0.500 0.250 0.200 22 0.250 0.500 300 700 K
PC-55 RB-70 0.500 0.375 0.200 20 0.350 0.700 300 1.5 Meg
PRINTED CIRCUIT RECTANGULAR RESISTORS --- K SERIES
KRL
STYLE
DIMENSIONS POWER in
WATTS
MAXIMUM
RESISTANCE
HEIGHT
± .032 WIDTH
± .020 LENGTH
± .020
LEAD
SPACING ±
.010 LEAD
AWG MIL
125°CCOMM
125°CMAXIMUM
VOLTAGE
K-250 .250 0.125 0.250 0.125 20 0.125 0.250 150 500 K
†K-300 .300 0.125 0.300 0.150 22 0.125 0.300 150 1 MEG
- Precision
- Power
- Packaging
(Tape & Reel)
PRECISION RESISTOR CATEGORIES
Choose a category to display below:
Surface Mount Precision Wirewound Resistors (S
Series)
Axial Precision Wirewound Resistors (500 & ECSeries)
Temperature Compensating Wirewound Resistors
Printed Circuit Style Wirewound Resistors (PC & K
Series)
Hermetically Sealed Precision Wirewound Resistors
( HR Series )
The HR Series Hermetically Sealed Precision Wirewound
Resistors were designed for applications requiring the highest
resistance stability possible. By combining the inherent stability of
the wirewound construction with extensive stabilization and a total
moisture seal, the HR series offers a 3 year long term stability
specification of .0025% maximum. HR-Series resistors are typically
used in high accuracy instrumentation and as resistance standards.
HERMETICALLY SEALED PRECISION WIREWOUND
RESISTORS
GENERAL SPECIFICATIONS
● Resistance Range: 1 to maximum listed (see chart).
● Standard Tolerances: ±.1%, ±.05%, ±.02%, ±.01%, ±.005%;.
Available to ±.0025%.
● Std Temperature Coefficient: ±5 PPM/°C. Available to ±1
PPM/°C over limited temperature ranges and for values over
100 .
● Ratio Matches: TC Matching to ±1 PPM/°C and/or Tolerance
Matching to ±.002% are available.
● Operating Temperature Range: -55°C to ±145°C.
● Environmental Specification: Meets or exceeds the applicable
requirements of Mil-R-93 and Mil-R-39005. Markings meet Mil-
Std-130.
● Lead Material: Standard leads are solder plated copper weld
above 25 , solder plated copper for 25 and lower.
● End Seals: Pyrex disks chemically bonded to metal flanges.
Disks are silicone treated to provide resistance to
environmental characteristics.
● Case: Electro-plated brass tubing with support rings. Outer
insulation protection available.
● Long Term Operating Stability: ±.001% for 1 year: ±.0025%
over 3 years, when operated within the wattage and ambient
temperature limits of the .0025% derating curve.
HR-500 SERIES HRK-300
(click graph to enlarge)
PRINTED CIRCUIT RESISTORS --- HR SERIES
STYLE WATTS MAX
VOLTS MAX
RES. " L "
MAX " D "
±.010" " H "
MAX LEAD
AWG
HR-534 .065 100 150K .500 .200 - - - - - 22
HR-538 .125 250 500K .600 .250 - - - - - 22
HR-540 .250 300 1 MEG .660 .312 - - - - - 20
HR-560 .350 400 1.5 MEG .660 .406 - - - - - 20
HR-575 .600 500 2 MEG 1.100 .406 - - - - - 20
HR-585 1.000 600 3 MEG 1.600 .500 - - - - - 20
HR-590 1.500 850 4 MEG 2.200 .500 - - - - - 20
HRK-300 .100 200 500K .450 .200 .450 22
- Precision
- Power
- Packaging
( Tape & Reel )
POWER WIREWOUND RESISTOR CATEGORIES
Choose a category to display below:
Power Wirewound Resistors (AK, P & C Series)
Non-Inductive Low Ohm Resistors (NP Series)
Ceramic Encased Power Resistors (CB, LB & V
Series)
Non Flame Fusible Metal Film Power Resistors (FPR
Series)
Multipurpose Power Resistors (OX & OXH Series)
Heat Sink Power Resistors (AT Series)
Surface Mount Power Resistors (S Series)
Temperature Compensating Power Resistors
LOW-OHM NON-INDUCTIVE POWER RESISTORS
Features:
Std Range: .005 -.1
Std Tolerances: 5%, 3%, 1%
Less than 20 Nanohenries Inductance
Low Temperature Coefficients:
NP-1A: ±40 ppm + 8250 ppm/ value in milliohms
NP-2A, NP-3: ±40 ppm + 3030 ppm/ value in milliohms
NP-5A: ±40 ppm + 1865 ppm/ value in milliohms
High Power to Size Ratio
Operating Temperature Range: -55°C to 275°C
Environmental Performance: Exceeds the requirements of MIL-
PRF-49465
See Derating Chart Below
LOW OHM Power Resistors -- NP Series
STYLE WATTS MAXIMUM
CURRENT DIELECTRIC
WATTSTRAND
"L"
LENGTH
± .010"
"D"
DIA.
±
.010"
"C"
TST
PNT
"A"
AWG
± .003"
NP-1A 1 12A 500 VAC .430 .120 .590 24
(.020")
NP-2A 3 20A 1000 VAC .600 .210 .675 20
(.032")
NP-3 4 20A 1000 VAC .680 .265 .715 20
(.032")
NP-5A 5 26A 1000 VAC .925 .275 .838 18
(.040")
Four Terminal Low-OHM NON-INDUCTIVE Resistors
KRL's Four Terminal Low-OHM Resistors were designed for low
resistance applications requiring the highest accuracy and
temperature stability. When used in a "Kelvin" configuration,
applying current through two opposite leads and sensing voltage
across the other two leads, the resistance and temperature
coefficient of the leads are effectively eliminated. This results in
lower TC's and lower self-heating drift than with two terminal
resistors, and eliminates the need for connecting to the leads at
precise "test points", allowing tighter tolerances to be held as well.
Features:
Resistance Range: .005 -.1 standard; .001 -100 available
Standard Tolerances: 5%, 3%, 1%, .5%, .25%.
(.1% available for .02 and higher)
Operating Temperature Range: -55°C to +200°C
Temperature Coefficient, 0°C to 85°C:
±50 ppm/°C, .015 and higher; ±100 ppm/°C below .015 .
Environmental Performance: exceeds the requirements of MIL-
PRF-49465
- Precision
- Power
- Packaging
( Tape & Reel )
POWER WIREWOUND RESISTOR CATEGORIES
Choose a category to display below:
Power Wirewound Resistors (AK, P & C Series)
Non-Inductive Low Ohm Resistors (NP Series)
Ceramic Encased Power Resistors (CB, LB & V
Series)
Non Flame Fusible Metal Film Power Resistors (FPR
Series)
Multipurpose Power Resistors (OX & OXH Series)
Heat Sink Power Resistors (AT Series)
Surface Mount Power Resistors (S Series)
Temperature Compensating Power Resistors
CERAMIC ENCASED POWER RESISTORS
Axial Lead Wirewound & Low OHM Ceramic Boat Resistors
Wirewound Construction Typically Above .1 (CB Style)
Metal Element Construction Typically .1 and Below (LB and LB(4)
Styles.)
Specify Style LB(4) for 4-Terminal Construction.
Fireproof Construction
Standard Tolerances ±5%, ±3%, ±1%; available to ±.1%.
Standard Temperature Coefficient: ±30 ppm above 1 ; ±100ppm
.1 to 1 ; ± 400ppm below .1 ; ±60ppm for style LB(4) all values.
Dielectric Withstanding Voltage: 1500V AC Minimum.
16 AWG (.051) Axial Leads Available for High Current Applications
See Temperature Rise and Derating Diagrams Below.
Ceramic Encased Boat Resistors -- CB, LB Series
KRL
STYLE POWER
25C
MAXIMUM
WORKING
VOLTAGE
MAXIMUM
CURRENT
AMPS
RESISTANCE
RANGE
(HIGHER
CUSTOM
VALUES
AVAILABLE) A ±
.03 B ±
.03 C ±
.03 AWG
± .005
S
±
.062
LB-1 1 72V 18 .003 to ,1 .580 .250 .250 20 .490
LB-2 2 100V 20 .003 to .1 .690 .250 .250 20 .563
CB-
3/LB-3 3 123V 20 .003 to 5K .875 .312 .312 20 .563
CB-
5/LB-5 5 158V 30 .003 to 5K .875 .375 .350 18,20* .563
CB-
7/LB-7 7 265V 30 .003 to 10K 1.400 .375 .350 18,20* 1.013
CB-
10/LB-
10 10 447V 30 .003 to 20K 1.880 .375 .350 18,20* 1.388
CB-
15/LB-
15 15 548V 30 .003 to 20K 1.880 .500 .500 18 1.388
CB-
25/LB-
25 22 738V 30 .003 to 40K 2.500 .500 .500 18 2.000
*18 AWG Style LB, 20 AWG Style CB
VERTICAL MOUNT CERAMIC BOAT RESISTORS
Wirewound construction typically above .1 ;
Metal element construction .1 and below.
Fireproof Construction.
Space Saving Design.
Standard Tolerances ±5%, ±3%, ±1%.
Standard temperature coefficient ±30 ppm above 1 ;
±100 ppm .1 to 1 ; ±400 ppm below .1 .
Dielectric withstanding voltage 1500 AC minimum.
See temperature rise and derating diagrams below.
Maximum Current = 25 Amps; 16 AWG or 18 AWG leads available for
high current applications.
KRL
STYLE
POWER
@ 25C
MAXIMUM
WORKING
VOLTAGE
A
±
.039
B
±
.059
C
±
.039
D
±
.032
RESISTANCE
RANGE
V-2 2 210V .275 .800 .435 .197 .01-20K
V-3 3 261V .320 1.00 .475 .197 .01-22K
V-5 5 261V .350 1.00 .520 .197 .01-22K
V-10 10 800V .365 1.50 .520 .197 .01-90K
V-15 12.5 800V .500 1.40 .640 .297 .01-90K
(click graphs to enlarge)
Note: Most of the above styles
may be ordered with the
following options: ( F ) for
custom fusing action; ( TF )
for failsafe Thermal Fuse
Applications (See Below fro
TF construction).
- Precision
- Power
- Packaging
( Tape & Reel )
POWER WIREWOUND RESISTOR CATEGORIES
Choose a category to display below:
Power Wirewound Resistors (AK, P & C Series)
Non-Inductive Low Ohm Resistors (NP Series)
Ceramic Encased Power Resistors (CB, LB & V
Series)
Non Flame Fusible Metal Film Power Resistors
(FPR Series)
Multipurpose Power Resistors (OX & OXH Series)
Heat Sink Power Resistors (AT Series)
Surface Mount Power Resistors (S Series)
Temperature Compensating Power Resistors
NON FLAME FUSIBLE METAL FILM POWER RESISTORS
The FPR Nonflame Fusible Metal Film Resistors were designed
to limit thermal surge and resulting circuit damage due to excessive
voltage. FPR Resistors provide reliable and accurate blow
characteristics. The FPR resistors fail in an open mode. The
resistors are available in ohmic values from .22 to 100K , and
wattage sizes from 1/2 to 3 watts.
Various telephone power line and tip & ring circuits utilize the FPR
resistor to protect sensitive parts from lightning strike surges. Other
circuits that would benefit from these fusible resistors are inputs that
may be exposed to line voltage faults or power supplies that need
current limiting with a safe, nonflame failure mode. Since each circuit
has different and custom requirements, KRL/Bantry will work with
your engineering staff to help choose the correct part for your
application.
FEATURES:
Small package size
Noncombustible insulating coating
Coating resists freon cleaning solvents
Temperature coefficients less than ±200 PPM
Uniform fusing characteristics
Standard tolerance ±5%
FUSING TIME
POWER TYPICAL MAXIMUM
16 X WATTAGE
(W) 30 SEC. 1 MIN.
20 X W 20 SEC. 40 SEC.
24 X W 10 SEC. 30 SEC.
28 X W 8 SEC. 20 SEC.
32 X W 5 SEC. 15 SEC.
TYPE L ±
.04 D ±
.024 H ±
.25 LEAD
AWG RESISTANCE
RANGE
FPR-
1/2W .276 .104 1.250 23 .22 -100K
FPR-
3/4W .360 .120 1.250 22 .22 -100K
FPR-
1W .360 .160 1.250 22 .22 -100K
FPR-
2W .450 .180 1.250 20 .3 -100K
FPR-
3W .620 .220 1.250 20 .3 -100K
- Precision
- Power
- Packaging
( Tape & Reel )
POWER WIREWOUND RESISTOR CATEGORIES
Choose a category to display below:
Power Wirewound Resistors (AK, P & C Series)
Non-Inductive Low Ohm Resistors (NP Series)
Ceramic Encased Power Resistors (CB, LB & V
Series)
Non Flame Fusible Metal Film Power Resistors (FPR
Series)
Multipurpose Power Resistors (OX & OXH Series)
Heat Sink Power Resistors (AT Series)
Surface Mount Power Resistors (S Series)
Temperature Compensating Power Resistors
MULTIPURPOSE POWER RESISTORS
Miniature and Standard Metal Oxide Resistors
Non Inductive Design
Non-Flammable Coating
Standard Temperature Coefficient = ±300ppm/°C
Standard Tolerance = ±5%
See Derating Diagram Below
Multipurpose Power Resistors -- OX & OXH Series
KRL
STYLE
POWER
IN
WATTS MAXIMUM VOLTAGE
DIELECTRIC
WITHSTANDING
VOLTAGE
RESISTANCE
RANGE DIMENSIONS
@ 75°C LENGTH DIA. LEAD
OXH OX OXH OX WORKING OVERLOAD MIN MAX L ± .040" D ±
.020"
AWG
±
005"
DIA.
±
.005"
- OX-
05 - 0.5 350V 600V 350V AC .5 120K .352 .128 22 0.025
OXH-
10 OX-
10 1.0 1.0 350V 600V 350V AC .5 120K .365 .140 22 0.025
OXH-
20 -2.0 - 350V 650V 500V AC .5 150K .440 .180 20 0.032
OXH-
30 OX-
20 3.0 2.0 350V 700V 600V AC .5 150K .620 .200 20 0.032
OXH-
50 OX-
30 5.0 3.0 350V 700V 1000V AC .5 150K .950 .340 20 0.032
OXH-
60 OX-
40 6.0 4.0 450V 800V 1000V AC 1 180K 1.280 .340 20 0.032
OXH-
70 OX-
50 7.0 5.0 500V 1000V 1000V AC 1 200K 1.640 .340 20 0.032
OXH-
100 OX-
60 10.0 6.0 600V 1200V 1000V AC 1 250K 2.160 .340 20 0.032
- Precision
- Power
- Packaging
( Tape & Reel )
POWER WIREWOUND RESISTOR CATEGORIES
Choose a category to display below:
Power Wirewound Resistors (AK, P & C Series)
Non-Inductive Low Ohm Resistors (NP Series)
Ceramic Encased Power Resistors (CB, LB & V
Series)
Non Flame Fusible Metal Film Power Resistors (FPR
Series)
Multipurpose Power Resistors (OX & OXH Series)
Heat Sink Power Resistors (AT Series)
Surface Mount Power Resistors (S Series)
Temperature Compensating Power Resistors
HEAT SINK POWER RESISTORS
Features:
Chassis mounting utilized for high power to size ratio
Std Tolerances: 5%, 3%, 1%. Available to .05%
Temperature Coefficient: 90 PPM/°C less than 1 ; 50 PPM/°C 1
to 10 ;
30 PPM/°C 10 to 100 ; 20 PPM/°C 100 and above.
Operating Range: -55°C to 250°C
Specify "N" in front of the style for noninductive winding.
(Divide maximum resistance by 2.)
(click graph to enlarge)
KRL
STYLE MIL-R-
18546
POWER
IN WATTS RANGE
RESISTANCE
MAXIMUM
WORKING
VOLTAGE DIELECTRIC
RMSKRL MIL
AT-5 RE-60 7.5 5 0.1 - 25K 160 1500
AT-10 RE-65 12.5 10 0.1 - 45K 265 1500
AT-25 RE-70 25 20 0.1 - 95K 550 2500
AT-50 RE-75 50 30 0.1 - 275K 1250 2500
Proper Heat Sinks:
4"x6"x2"x.040" Aluminum chassis for AT-5 and AT-10.
5"X7"x2"x.040" Aluminum chassis for AT-25 and AT-50.
KRL
STYLE MIL-R-
18546 A
± .010
B
±
.010 C
± .031 D
± .062
E
±
.015 F
± .015 G
± .015 H
± .010 J
± .010 K
± .010 L
± .005 M
± .015 N
± .005
P
±
.062
AT-5 RE-60 .444 .490 .600 1.125 .334 .646 .320 .065 .133 .078 .093 .078 .050 .262
AT-10 RE-65 .562 .625 .750 1.375 .420 .800 .390 .075 .200 .093 .093 .102 .086 .312
AT-25 RE-70 .719 .781 1.062 1.938 .550 1.080 .562 .075 .265 .172 .125 .115 .086 .438
AT-50 RE-75 1.563 .844 1.968 2.781 .630 1.140 .610 .088 .305 .196 .125 .107 .086 .406
- Precision
- Power
- Packaging
( Tape & Reel )
POWER WIREWOUND RESISTOR CATEGORIES
Choose a category to display below:
Power Wirewound Resistors (AK, P & C Series)
Non-Inductive Low Ohm Resistors (NP Series)
Ceramic Encased Power Resistors (CB, LB & V
Series)
Non Flame Fusible Metal Film Power Resistors (FPR
Series)
Multipurpose Power Resistors (OX & OXH Series)
Heat Sink Power Resistors (AT Series)
Surface Mount Power Resistors (SP Series)
Temperature Compensating Power Resistors
SURFACE MOUNT POWER RESISTORS -- SP SERIES
POWER (SP)
UL94-VO MOLDED CHIP DESIGN
LOW TC'S & TIGHT TOLERANCES
TEMPERATURE COMPENSATING TC'S to +6000 PPM
AVAILABLE
TEMPERATURE COEFFICIENT
±90 PPM/°C less than 1 ; ±50 PPM/°C 1 to 10 ; ±30 PPM/°C 10 to
100 ; ±20 PPM/°C above 100
KRL
STYLE WATTS STD
toL OHMIC
RANGE WORKING
VOLTAGE
SP-1/2 0.75
±
0.1
thru
±
5%
0.09 -
1.4K 33
SP-1 1.5 0.09 -
5K 58
SP-2 2.5 0.1 -
11K 127
SP-3 3.5 0.1 -
24K 212
KRL
STYLE WATTS STD
toL OHMIC
RANGE TYPICAL
INDUCTANCE
SL-1/2 0.5 ±
1.0
thru
±
5%
.01 -
.08
< 7
NANOHENRIES
SL-1 1.0 .01 -
.08
SL-2 2.0 .005 -
.1
SL-3 3.0 .005-
.1
Dimensions & Suggested Land Patterns (per ANSI/IPC-SM-782 Guidelines)
KRL STYLE A± .005" B ± .015" C ± .010" D ± .015" E ± .005" F ± .005" G ± .015" H I J X Y
SP-1/2 .190 .215 .040 .100 .093 .125 .050 .085 .255 .170 .065 .085
SP-1 .240 .255 .035 .112 .107 .150 .050 .150 .310 .230 .065 .085
SP-2 .435 .455 .070 .210 .200 .230 .065 .280 .510 .395 .090 .115
SP-3 .575 .600 .050 .255 .250 .275 .075 .465 .655 .560 .105 .095
PACKAGING
SP-1/2 - 12mm
750 pcs = 7" Reel
2000 pcs = 13" Reel
SP-1 - 16mm
500 pcs = 7" Reel
2000 pcs = 13" Reel
SP-2 - 24mm
1000 pcs = 13" Reel
SP-3 - 32mm
600 pcs = 13" Reel
ENVIRONMENTAL PERFORMANCE (KRL TYPICAL CHANGE)
SP SERIES
SOLDER REFLOW PROFILE 0.05%
LOAD LIFE 2%
MOISTURE RESISTANCE 0.2%
THERMAL SHOCK 0.2%
DIELECTRIC WITHSTAND 1000V AC
SHORT TERM OVERLOAD 0.2%
SOLDERABILITY 95% COVERAGE
FLAMMABILITY UL94-V0 / ASTM NEEDLE FLAME
- Precision
- Power
- Packaging
( Tape & Reel )
POWER WIREWOUND RESISTOR CATEGORIES
Choose a category to display below:
Power Wirewound Resistors (AK, P & C Series)
Non-Inductive Low Ohm Resistors (NP Series)
Ceramic Encased Power Resistors
Non Flame Fusible Metal Film Power Resistors (FPR
Series)
Multipurpose Power Resistors (OX & OXH Series)
Heat Sinc Power Resistors (AT Series)
Surface Mount Power Resistors (S Series)
Temperature Compensating Power Resistors
TEMPERATURE COMPENSATING POWER RESISTORS
KRL High T.C. Resistors are available in any of the packages
listed in this Catalog
● RESISTANCE RANGE - 10 to 500K
● TOLERANCE - Standard from 10%, 5%, 3% and 1%.
Accuracies to 0.1% are available. Consult factory for special
requirements.
● TEMPERATURE RANGE - From -55°C to +145°C, +25°C ref.
● TEMPERATURE COEFFICIENTS - Available from
+80PPM/°C to +6000PPM/°C (see table below). Use Order
Code A thru T for standard T.C.'s shown.
● SPECIAL TEMPERATURE COEFFICIENTS - If you need a
special, Non standard T.C., Use Order Code X and specify the
exact T.C. required and temperature range of operation with
25°C as reference temperature. (Factory must approve all non-
standard T.C.'s)
● APPLICATIONS - Since there are many packages that a High
T.C. Resistor can accommodate, it is impossible to show all
types. Most often a customer will have a unique situation and
our engineering department will gladly aid in any design and
development of customer requirements. KRL High T.C.
Resistors have found their way into Power Supplies, Motor
Controllers, Computers, Electronic Circuits for D to A and A to
D Converters, Temperature Sensors for the Medical
Electronics Field, Aircraft Systems, Aerospace Flight Modules,
and in Automotive Electronic Ignition Systems.
KRL
ORDER
CODE
TEMPERATURE
COEFFICIENT
(2) MAXIMUM
RESISTANCE IN
PERCENT
COLD
RANGE IN
PPM/C -55C
to +25C
HOT RANGE
IN PPM/C
+25C to
+125C
A + 80 ± 20 + 80 ± 20 80
B + 100 ± 10 + 100 ± 10 80
C + 120 ± 10 + 120 ± 10 80
D + 140 ± 30 + 140 ± 30 80
E + 180 ± 30 + 180 ± 30 80
G + 290 ± 30 + 290 ± 30 25
H + 380 ± 40 + 400 ± 40 70
J + 450 ± 50 + 450 ± 50 60
K + 700 ± 200 + 700 ± 200 60
L + 850 ± 80 + 850 ± 80 50
†M + 1000 ± 100 + 1000 ± 100 50
†N + 1500 ± 200 + 1400 ± 200 50
†P + 2600 ± 200 + 2600 ± 200 50
†Q + 3200 ± 300 + 3500 ± 300 40
†R + 4000 ± 400 + 4500 ± 400 5
†T + 5000 ± 300 + 6000 ± 300 5
X (1) SPECIAL T.C., SPECIFY EXACT TCR.
SUBJECT to FACTORY APPROVAL
TABLE INFO
(1) KRL will
manufacture to any
T.C.R. to meet
customer
specifications.
(2) Maximum
resistance in percent
should be applied to
the style chosen in
the normal catalog
listing column
marked Maximum
Resistance.
† indicates most
readily available
T.C.R.'s.
