www.vishay.com For technical questions, contact: filmresistorsleaded@vishay.com Document Number: 28732
196 Revision: 30-Nov-09
VR25
Vishay BCcomponents
High Ohmic/High Voltage
Metal Glaze Leaded Resistors
A metal glazed film is deposited on a high grade ceramic body.
After a helical groove has been cut in the resistive layer, tinned
electrolytic copper wires are welded to the end-caps. The
resistors are coated with a light blue lacquer which provides
electrical, mechanical, and climatic protection.
The encapsulation is resistant to all cleaning solvents in
accordance with IEC 60068-2-45.
FEATURES
•Rmax. = 22 MΩ; Umax. = 1600 VDC
•High pulse loading capability (up to 7 kV)
•Small size (0207)
•Lead (Pb)-free solder contacts
•Pure tin plating provides compatibility with lead (Pb)-free
and lead containing soldering processes
•Compliant to RoHS directive 2002/95/EC
•AEC-Q200 qualified
APPLICATIONS
•Where high resistance, high stability and high reliability at
high voltage are required
•High humidity environment
•White goods
•Power supplies
Note
(1) Ohmic values (other than resistance range) are available on request.
TECHNICAL SPECIFICATIONS
DESCRIPTION VALUE
Resistance Range (1) 100 kΩto 22 MΩ
Resistance Tolerance and Series:
100 kΩto 15 MΩ± 1 %: E24/E96 series; ± 5 %: E24 series
15 MΩto 22 MΩ± 5 %: E24 series; ± 10 %: E12 series
Rated Dissipation, P70 0.25 W
Thermal Resistance, Rth 140 K/W
Temperature Coefficient ≤ ± 200 ppm/K
Maximum Permissible Voltage Umax.:
DC 1600 V
RMS 1150 V
Dielectric Withstanding Voltage of the Insulation for 1 Min 700 V
Basic Specifications IEC 60115-1
Climatic Category (IEC 60068-1) 55/155/56
Stability After:
Load (1000 h, P70)ΔR max.: ± (1.5 % R + 0.1 Ω)
Long Term Damp Heat Test (56 Days) ΔR max.: ± (1.5 % R + 0.1 Ω)
Soldering (10 s, 260 °C) ΔR max.: ± (1.5 % R + 0.1 Ω)
Noise max. 5 µV/V
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Revision: 30-Nov-09 197
VR25
High Ohmic/High Voltage
Metal Glaze Leaded Resistors Vishay BCcomponents
Notes
(1) Please refer to table PACKAGING
• The PART NUMBER is shown to facilitate the introduction of a unified part numbering system for ordering products
DIMENSIONS
PART NUMBER
PART NUMBER: VR25000001503JA100
MODEL/SIZE VARIANT TCR/MATERIAL VALUE TOLERANCE PA CK A GI N G (1) SPECIAL
VR25000 0 = Neutral
Z = Value overflow
(Special)
0 = Standard 3 digit value
1 digit multiplier
MULTIPLIER
3 = *103
4 = *104
5 = *105
F = ± 1 %
J = ± 5 %
K = ± 10 %
A5
A2
A1
R5
N4
The 2 digits
are used for all
special parts.
00 = Standard
PRODUCT DESCRIPTION: VR25 5 % A1 150K
VR25 5 % A1 150K
MODEL/SIZE TOLERANCE PACKAGING (1) RESISTANCE VALUE
VR25 ± 1 %
± 5 %
± 10 %
A5
A2
A1
R5
N4
150K = 150 kΩ
8M2 = 8.2 MΩ
PACKAGING
MODEL TAPING
AMMO PACK REEL
PIECES CODE PIECES CODE
VR25
Axial, 26 mm 2000 A2 - -
Axial, 52 mm
5000 A5 5000 R5
1000 A1 - -
Radial 4000 N4 - -
DIMENSIONS - resistor type and relevant physical dimensions
TYPE Ø Dmax. L1 max. L2 max. Ø d
VR25 2.5 6.5 7.5 0.58 ± 0.05
Ø D
L
1
L
2
Ø d
Outline
502RV00001503JA100
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198 Revision: 30-Nov-09
VR25
Vishay BCcomponents High Ohmic/High Voltage
Metal Glaze Leaded Resistors
PRODUCTS WITH RADIAL LEADS
Note
• Please refer document number 28721 “Packaging” for more detail
MARKING
The nominal resistance and tolerance are marked on the
resistor using four or five colored bands in accordance with
IEC 60062, marking codes for resistors and capacitors.
Yellow and grey are used instead of gold and silver because
metal particles in the lacquer could affect high-voltage
properties.
OUTLINES
The length of the body (L1) is measured by inserting the
leads into holes of two identical gauge plates and moving
these plates parallel to each other until the resistor body is
clamped without deformation (IEC 60294).
FUNCTIONAL PERFORMANCE
PRODUCT CHARACTERIZATION
Standard values of nominal resistance are taken from the E96/E24/E12 series for resistors with a tolerance of ± 1 %, 5 % or
10 %. The values of the E96/E24/E12 series are in accordance with IEC 60063.
Notes
(1) The maximum voltage that may be continuously applied to the resistor element, see IEC 60115-1
• The maximum permissible hot-spot temperature is 155 °C
DIMENSIONS - RADIAL TAPING
SYMBOL PARAMETER VALUE TOLERANCE UNIT
P Pitch of components 12.7 ± 1.0 mm
P0Feed-hole pitch 12.7 ± 0.2 mm
P1Feed-hole centre to lead at topside at the tape 3.85 ± 0.5 mm
P2Feed-hole center to body center 6.35 ± 1.0 mm
F Lead-to-lead distance 4.8 + 0.7/- 0 mm
W Tape width 18.0 ± 0.5 mm
W0Minimum hold down tape width 5.5 - mm
H1Component height 29 Max. mm
H0Lead wire clinch height 16.5 ± 0.5 mm
H Height of component from tape center 19.5 ± 1 mm
D0Feed-hole diameter 4.0 ± 0.2 mm
L Maximum length of snipped lead 11.0 - mm
L1Minimum lead wire (tape portion) shortest lead 2.5 - mm
P
P2
W
W0
D0
P1
P0
L1
L
F
H0
H1
H
MASS PER UNIT
TYPE MASS
(mg)
VR25 52 mm 212
VR25 26 mm 148
LIMITING VALUES
TYPE
LIMITING VOLTAGE (1)
Umax. LIMITING POWER P70
(W)
DC RMS
VR25 1600 1150 0.25
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Revision: 30-Nov-09 199
VR25
High Ohmic/High Voltage
Metal Glaze Leaded Resistors Vishay BCcomponents
Derating
Application Information
Pulse Loading Capability
70 10050
00
50
100
155
- 55
T
amb (°C)
P
max.
(% rated)
P
Maximum dissipation (Pmax.) in percentage of rated power as a
function of the ambient temperature (Tamb)
The power that the resistor can dissipate depends
on the operating temperature.
0 0.1 0.30.2
P
(W)
Δ
T
(K)
50
0
10
20
30
40
Hot-spot temperature rise (ΔT) as a function of dissipated power
4
6
8
10
10
2
20
10
- 2
101
R
n
(M Ω)
U
max.
(kV)
^
10
- 1
Maximum allowed peak pulse voltage in accordance with
IEC 60065, 14.1.a; 50 discharges from a 1 nF capacitor
charged to Umax.; 12 discharges/min (drift ΔR/R≤2 %)
50
0 0.1 0.3
00.2
10
20
30
40
P
(W)
∆
T
(K)
5 mm
10 mm
15 mm
Temperature rise (ΔT) at the lead end (soldering point)
as a function of dissipated power at various
lead lengths after mounting
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200 Revision: 30-Nov-09
VR25
Vishay BCcomponents High Ohmic/High Voltage
Metal Glaze Leaded Resistors
TESTS AND REQUIREMENTS
Essentially all tests are carried out in accordance with
IEC 60115-1 specification, category LCT/UCT/56 (rated
temperature range: Lower Category Temperature, Upper
Category Temperature; damp heat, long term, 56 days).
The tests are carried out in accordance with IEC 60068-2-xx.
Test method under standard atmospheric conditions
according to IEC 60068-1, 5.3.
In the Test Procedures and Requirements table the tests and
requirements are listed with reference to the relevant clauses
of IEC 60115-1 and IEC 60068-2-xx test methods. A short
description of the test procedure is also given. In some
instances deviations from the IEC recommendations were
necessary for our method of specifying.
All soldering tests are performed with mildly activated flux.
TEST PROCEDURES AND REQUIREMENTS
IEC
60115-1
CLAUSE
IEC
60068-2-
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
4.16 Robustness of terminations:
4.16.2 21 (Ua1) Tensile all samples Ø 0.6 mm; load 10 N; 10 s Number of failures < 10 x 10-6
4.16.3 21 (Ub) Bending half number
of samples Ø 0.6 mm; load 5 N; 4 x 90°Number of failures < 10 x 10-6
4.16.4 21 (Uc) Torsion other half
of samples 3x360° in opposite directions No damage
ΔR max.: ± (0.5 % R + 0.05 Ω)
4.17 20 (Ta) Solderability
2 s; 235 °C: Solder bath method; SnPb40
3 s; 245 °C: Solder bath method;
SnAg3Cu0.5
Good tinning (≥ 95 % covered); no
damage
Solderability
(after aging)
8 h steam or 16 h 155 °C;
leads immersed 6 mm;
for 2 s at 235 °C; solder bath (SnPb40)
for 3 s at 245 °C; solder bath
(SnAg3Cu0.5) method
Good tinning (≥ 95 % covered); no
damage
4.18 20 (Tb) Resistance to
soldering heat
Thermal shock: 10 s; 260 °C;
3 mm from body ΔR max.: ± (0.5 % R + 0.05 Ω)
4.19 14 (Na) Rapid change of temperature 30 min at - 55 °C and
30 min at + 155 °C; 5 cycles ΔR max.: ± (0.5 % R + 0.05 Ω)
4.20 29 (Eb) Bump 3 x 1500 bumps in 3 directions; 40 g No damage
ΔR max.: ± (0.5 % R + 0.05 Ω)
4.22 6 (Fc) Vibration
Frequency 10 Hz to 500 Hz; displacement
1.5 mm or acceleration 10 g; 3 directions;
total 6 h (3 x 2 h)
No damage
ΔR max.: ± (0.5 % R + 0.05 Ω)
4.23 Climatic sequence:
4.23.2 2 (Ba) Dry heat 16 h; 155 °C
4.23.3 30 (Db) Damp heat (accelerated) 1st
cycle 24 h; 55 °C; 90 % to 100 % RH
4.23.4 1 (Aa) Cold 2 h; - 55 °C
4.23.5 13 (M) Low air pressure 2 h; 8.5 kPa; 15 °C to 35 °C
4.23.6 30 (Db) Damp heat (accelerated)
remaining cycles 5days; 55°C; 95 % to 100 % RH Rins min.: 103MΩ
ΔR max.: ± (1.5 % R + 0.1 Ω)
4.24 78 (Cab) Damp heat
(steady state)
56 days; 40 °C; 90 % to 95 % RH;
dissipation 0.01 P70;
limiting voltage U = 100 VDC
ΔR max.: ± (1.5 % R + 0.1 Ω)
4.25.1 Endurance 1000 h at 70 °C; P70 or Umax. ΔR max.: ± (1.5 % R + 0.1 Ω)
4.8 Temperature coefficient Between - 55 °C and + 155 °C≤ ± 200 ppm/K
4.7 Voltage proof on insulation URMS = 700 V during 1 min;
V-block method No breakdown
4.12 Noise IEC 60195 Max. 5 µV/V
4.6.1.1 Insulation resistance U = 500 VDC during 1 min;
V-block method Rins min.: 104MΩ
4.13 Short time overload
Room temperature;
dissipation 6.25 x P70 (voltage not more
than 2 x limiting voltage); 10 cycles;
5 s ON and 45 s OFF
ΔR max.: ± (2.0 % R + 0.05 Ω)
4.26 Active flammability
“cheese-cloth test”
Steps of: 5/10/16/25/40 x P70 duration
5min No flaming of gauze cylinder
Document Number: 28732 For technical questions, contact: filmresistorsleaded@vishay.com www.vishay.com
Revision: 30-Nov-09 201
VR25
High Ohmic/High Voltage
Metal Glaze Leaded Resistors Vishay BCcomponents
12NC INFORMATION FOR HISTORICAL CODING REFERENCE
•The resistors have a 12-digit numeric code starting with
2322 241
•The subsequent:
first digit for 1 % tolerance products (E24 and E96 series)
or 2 digits for 5 % (E24 series) and 10 % (E12 series)
indicate the resistor type and packing.
•The remaining digits indicate the resistance value:
- The first 3 digits for 1 % or 2 digits for 5 and 10 %
tolerance products indicate the resistance value.
- The last digit indicates the resistance decade.
Last Digit of 12NC Indicating Resistance Decade
12NC Example
The 12NC for a VR25, resistor value 7.5 MΩ, 5 % tolerance,
supplied on a bandolier of 1000 units in ammopack, is:
2322 241 13755.
4.35 Passive flammability
“needle-flame test” Application of test flame for 20 s
No ignition of product;
no ignition of under-layer;
burning time less than 30 s
TEST PROCEDURES AND REQUIREMENTS
IEC
60115-1
CLAUSE
IEC
60068-2-
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
RESISTANCE DECADE LAST DIGIT
100 kΩto 976 kΩ4
1MΩto 9.76 MΩ5
≥ 10 MΩ6
12NC - Resistor type and packaging
TYPE TOL.
(%)
2322 241 .....
BANDOLIER IN AMMOPACK BANDOLIER
ON REEL
RADIAL TAPED STRAIGHT LEADS
4000
units
52 mm 26 mm 52 mm 52 mm
1000
units
2000
units
5000
units
5000
units
VR25
± 1 0.... 8.... - 7.... 6....
± 5 36... 13... 43... 53... 23...
± 10 38... 12... 42... 52... 22...
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
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Vishay
All product specifications and data are subject to change without notice.
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(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
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The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
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