Bulk Metal® Foil Technology
RNC90Y and RNC90Z (Z-Foil) to MIL-PRF-55182/9
Military and Space Established Reliability
Vishay Foil Resistors
Document Number: 63007 For any questions, contact: foil@vishaypg.com www.foilresistors.com
Revision: 30-Jul-12 1
INTRODUCTION
Military Established Reliability resistors from Vishay Foil
Resistors are available in resistance values from 4.99
through 121 k and for tolerances from ± 0.005 % to ± 1.0
%. The same resistors are also available as a non-qualified
product for customers desiring higher or lower resistance
values and the same or better performance capabilities. (See
table 2) Both the qualified and the non-qualified version are
manufactured on the same production line facilities and are
subjected to the same process, lot control, conditioning, and
GRP A (100 %) screening. Qualified versions receive
additional MIL Group B and C testing.
FEATURES
QPL product with established reliability (ER): meets
requirements of MIL-PRF-55182/9
Load life stability: ± 0.005 % for 2000 h, 0.3 W at + 125 °C
Temperature coefficient of resistance (TCR): ± 2 ppm/°C max.
(- 55 °C to + 175 °C)
Resistance tolerance: to ± 0.005 %
Thermal EMF: < 0.1 µV/°C
Qualified resistance range: 4.99
to 121 k
(RNC90Y)
30.1
to 121 k

(RNC90Z)
Specially conditioned non-QPL resistors available
See data sheet “Improved Performance Tested”
Fast thermal stabilization
Rise time: 1 ns without ringing
Special coatings that provide a cushioning layer which isolates
the resistive element from external stresses and moisture
Electrostatic discharge (ESD) above 25 000 V
Non inductive, non capacitive design
Current noise < - 42 dB
Prototype sample available from 72 h
TABLE 1 - SPECIFICATIONS COMPARISON
SPECIFICATION
RNC90Y (QUALIFIED)
MIL-PRF-55182/9
CHARACTERISTIC Y LIMITS
RNC90Z (QUALIFIED)
MIL-PRF-55182/9
CHARACTERISTIC Z LIMITS
S555 (NON-QUALIFIED)
VFR PERFORMANCE
LIMITS
Z555 (NON-QUALIFIED)
VFR PERFORMANCE
LIMITS
Temperature
Coefficient of
Resistance
± 5 ppm/°C ± 2 ppm/°C ± 5 ppm/°C ± 3 ppm/°C ± 2.5 ppm/°C ± 2 ppm/°C
(- 55 °C to + 125 °C) (- 55 °C to + 175 °C) (- 55 °C to + 125 °C)
± 10 ppm/°C (- 55 °C to + 125 °C)
(+ 125 °C to + 175 °C)
Resistance Range
4.99

to 121 k
30.1
to 121 k
1

to 150 k
4.99

to
25
> 25

to
80
> 80
Failure Rate
Level R Level R Not specified Not specified
Load-Life Stability
0.3 W at + 125 °C
at 2000 h ± 0.05 % maximum
R± 0.05 % maximum
R± 0.015 % maximum
R
2)
± 0.015 % maximum
R
2)
at 10 000 h ± 0.5 % maximum
R± 0.5 % maximum
R± 0.05 % maximum
R
2)
± 0.05 % maximum
R
2)
Current Noise
Not specified Not specified - 40 dB minimum - 40 dB minimum
High-Frequency
Operation
Rise Time Not specified Not specified 1.0 ns at 1 k
1.0 ns at 1 k
Inductance
3)
(L) Not specified Not specified 0.1 µH maximum 0.1 µH maximum
0.08 µH typical 0.08 µH typical
Capacitance (C) Not specified Not specified 1.0 pF maximum 1.0 pF maximum
0.5 pF typical 0.5 pF typical
Voltage
Coefficient
0.0005 %/V 0.0005 %/V 0.0001 %/V 0.0001 %/V
Working Voltage
4)
300 V maximum 300 V maximum 300 V maximum 300 V maximum
Thermal EMF
5)
Not specified Not specified 0.1 µV/°C maximum 0.1 µV/°C maximum
1 µV/W maximum 1 µV/W maximum
Notes
1. Qualification and failure rate verification test data is maintained by Vishay Foil and is available upon request. Lot traceability and identification
data is maintained by Vishay Foil for 7 years.
2. Load life R Maximum can be reduced by 80 % through Enhanced Reliability Testing (ERT). Consult our Applications Engineering for details.
3. Inductance (L) due mainly to the leads.
4. Not to exceed power rating of resistor.
5. µV/°C relates to EMF due to lead temperature differences and µV/W due to power applied to the resistor.
6. 0.200" (5.08 mm) lead spacing available - specify RNC90T for RNC90Y, and RNC90S for RNC90Z.
Military and Space Established Reliability
Vishay Foil Resistors
www.foilresistors.com For any questions, contact: foil@vishaypg.com Document Number: 63007
2Revision: 30-Jul-12
FIGURE 1 - COMPARISON OF RNC90Y TO RNC90Z TEMPERATURE COEFFICIENT OF RESISTANCE
+ 160
0
- 160
+ 1000
- 1000
ΔR/R (ppm)
Temperature (°C)
Specification ± 2 ppm/°C
- 200
+ 300
- 1000
RNC90Z
+ 1000
- 55 25 125 175
- 300
+ 200
+ 400
0
- 400
+ 1000
- 1000
ΔR/R (ppm)
Temperature (°C)
Specification ± 5 ppm/°C
- 500
+ 500
± 10 ppm/°C
- 1000
RNC90Y
+ 1000
- 55 25 125 175
FIGURE 2 - TRIMMING TO VALUES
(Conceptual Illustration)
Mutual Inductance
Reduction due
to Change in
Current Direction
Current Path
Before Trimming
Note: Foil shown in black, etched spaces in white
Interloop Capacitance
Reduction in Series
Trimming Process
Removes this Material
from Shorting Strip Area
Changing Current Path
and Increasing
Resistance
Current Path
After Trimming
FIGURE 3 - POWER DERATING CURVE
200
150
100
50
0- 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175
Ambient Temperature °C
Percent of Rated Power
+ 70 °C
Rated Power
FIGURE 4 - IMPRINTING AND DIMENSIONS
RNC90Y and RNC90Z Military Approved Resistors
W
Lead Material
#22 AWG
(0.025 Dia.)
Solder Coated
Copper
Side View
Resistance
Value Code
XXXXX
100R01
B R
LL
SW
Model Number
Failure Rate Code
(Not Present If
Non-Qualified)
Resistance
Tolerance
Code
Rear View
LS
1)
Jan Designator
(Non Present If
Non-Qualified)
VFR
S8016
XXXXX J
ST
H
L
Manufacturers
Identification
Number
Mfr. Code
B
Factory
07
Year
11
Week
Front View
Note
1. 0.200" (5.08 mm) lead spacing available - specify RNC90T for RNC90Y, and RNC90S for RNC90Z
TABLE 2 - MODEL SELECTION
MODEL
NUMBER
RESISTANCE
RANGE
(
)
STANDARD RESISTANCE
TOLERANCE FAILURE
RATE
AMBIENT
POWER RATING AVERAGE
WEIGHT
(g)
DIMENSIONS
TIGHTEST
%
LOOSEST
%at + 70 °C at + 125 ° C INCHES mm
RNC90Y
30.1 to 121K ± 0.005 ± 1.0 M, P, R
(See
Table 3)
0.6 W 0.3 W 0.6
W: 0.105 ± 0.010
L: 0.300 ± 0.010
H: 0.326 ± 0.010
ST: 0.015 ± 0.005
SW: 0.040 ± 0.005
LL: 1.000 ± 0.125
LS: 0.150 ± 0.005
2.67 ± 0.25
7.62 ± 0.25
8.28 ± 0.25
0.38 ± 0.13
1.02 ± 0.13
25.4 ± 3.18
3.81 ± 0.13
16.2 to 30.0 ± 0.05 ± 1.0
4.99 to 16.0 ± 0.1 ± 1.0
RNC90Z 30.1 to 121K ± 0.005 ± 1.0 0.6 W 0.3 W 0.6
S555
(NON QPL)
30.1 to 121K ± 0.005 ± 1.0
-0.6 W 0.3 W 0.6
20 to < 30.1 ± 0.01 ± 1.0
5 to < 20 ± 0.05 ± 1.0
2 to < 5 ± 0.1 ± 1.0
1 to < 2 ± 0.5 ± 1.0
> 121K to 150K ± 0.005 ± 1.0 -0.4 W 0.2 W 0.6
Z555
(NON QPL)
30.1 to 121K ± 0.005 ± 1.0
-0.6 W 0.3 W 0.620 to < 30.1 ± 0.01 ± 1.0
4.99 to < 20R ± 0.05 ± 1.0
Military and Space Established Reliability
Vishay Foil Resistors
Document Number: 63007 For any questions, contact: foil@vishaypg.com www.foilresistors.com
Revision: 30-Jul-12 3
Note
S555 and Z555 units are manufactured on the same production line facilities and are subjected to all the same process and lot control
requirements imposed on RNC90Y (Z) version, as well as all of the special screening, environmental conditioning and documentation
stipulations outlined in MIL-PRF 55182/9
TABLE 3 - GLOBAL PART NUMBER INFORMATION
NEW GLOBAL PART NUMBER: Y1189100R500AR0L (preferred part number format)
DENOTES PRECISION VALUE LIFE FAILURE RATE (LFR)(1) AER(2)
Y R = 
K = k
R = ± 0.01 %
P = ± 0.1 %
M = ± 1.0 %
0 = standard
1 - 999 = custom
PRODUCT CODE RESISTANCE TOLERANCE PACKAGING
1189 = RNC90Z
0089 = RNC90Y
1508 = RNC90T
1506 = RNC90S
0088 = S555
1288 = Z555
V = ± 0.005 %
T = ± 0.01 %
A = ± 0.05 %
B = ± 0.1 %
D = ± 0.5 %
F = ± 1.0 %
L= bulk pack
R= tape and reel
FOR EXAMPLE: ABOVE GLOBAL ORDER Y1189 100R500 A R 0 L:
TYPE: RNC90Z
VALUE: 100.5 
ABSOLUTE TOLERANCE: ± 0.05 %
LIFE FAILURE RATE (LFR): ± 0.01 %
AER: standard
PACKAGING: bulk pack
HISTORICAL PART NUMBER: RNC90Z 100R50 A R B (will continue to be used)
RNC90Z 100R50 ARB
MODEL OHMIC VALUE RESISTANCE
TOLERANCE
LIFE FAILURE
RATE (LFR)(1) PACKAGING
RNC90Z
RNC90S
RNC90Y
RNC90T
S555
Z555
100.5 V = ± 0.005 %
T = ± 0.01 %
A = ± 0.05 %
B = ± 0.1 %
D = ± 0.5 %
F = ± 1.0 %
R = ± 0.01 %
P = ± 0.1 %
M = ± 1.0 %
B = bulk pack
Note
(1) Applicable only for QPL part. For S555 and Z555 please assign "0" instead.
(2) For non-standard requests, please contact application engineering.
1891 0R50Y1 AR0 00 L
CAGE #S8016
“Commercial and Government Entity”
Formerly “FSCM”
Military and Space Established Reliability
Vishay Foil Resistors
www.foilresistors.com For any questions, contact: foil@vishaypg.com Document Number: 63007
4Revision: 30-Jul-12
The response of military and non military grade resistors to environmental stresses can be made better by “Improved
Performance Testing” (IPT). The IPT part will see burn-in and cycling that removes the “knee” from the normal drift of non IPT
parts. (See Table 4 for the improvement to expect in military parts when calling for VFR recommended screening). Users should
be aware that IPT testing renders the part non QPL and so a 3XXXXX part number will be assigned by VFR. Consult Applications
Engineering for details and ordering advice.
TABLE 4 - IMPROVED PERFORMANCE TESTING (NON-QPL APPROVED) VS. QPL
TEST
GROUP TEST
RNC90Y
MIL-PRF-55182/9
VISHAY FOIL RESISTORS
IMPROVED PERFORMANCE
TESTING
(IPT) LIMITS
METHOD PARAGRAPH LIMITS
IPower Conditioning not done -± 0.0025 %
Thermal Shock and 4.8.2 -± 0.0025 %
Overload Combined 4.8.3 ± 0.05 % ± 0.0025 %
II Resistance Temperature
Characteristic
4.8.9 ± 5 ppm/°C < ± 2 ppm/°C
(- 55 °C to + 125 °C)
(Can be sorted for tighter tracking)
Low Temperature Storage 4.8.23 ± 0.05 % ± 0.0025 %
Low Temperature Operation 4.8.10 ± 0.05 % ± 0.0025 %
Terminal Strength 4.8.11 ± 0.02 % ± 0.001 %
III DWV 4.8.12 ± 0.02 % ± 0.001 %
Insulation Resistance 4.8.13 104 M> 104 M
Resistance to Soldering Heat 4.8.14 ± 0.02 % ± 0.001 %
Moisture Resistance 4.8.15 ± 0.05 % ± 0.015 %
IV Shock 4.8.16 ± 0.01 % ± 0.0025 %
Vibration 4.8.17 ± 0.02 % ± 0.0025 %
VLoad Life at + 125 °C; 2000 h 4.8.18 ± 0.05 % ± 0.005 % (50 ppm)
Load Life at + 125 °C; 10 000 h 4.8.18 ± 0.5 % ± 0.015 % (150 ppm)
V (a) + 85 °C Power Rating - - ± 0.005 % (50 ppm)
+ 70 °C Power Rating 4.8.18 ± 0.05 % ± 0.005 % (50 ppm)
V (b) + 25 °C Power Rating - - ± 0.005 % (50 ppm)
VI Storage Life - - ± 0.0025 %
VII High Temperature Exposure 4.8.19 ± 0.5 % ± 0.005 %
VIII Max. Allowance Reactance - - < 1 %
Current Noise - - < - 42 dB
Voltage Coefficient 4.8.20 0.0005 %/V < 0.00001 %/V
-(5 ppm/V) (< 0.1 ppm/V)
Thermal EMF - - 0.1 µV/°C
FIGURE 5 - IPT IMPRINTING AND DIMENSIONS in inches (millimeters)
0.150 ± 0.005
(3.81 ± 0.13)
VFR
XXXX
3XXXXX
0.015 ± 0.005
(0.381 ± 0.13)
0.326 ± 0.010
(8.28 ± 0.25)
0.300 ± 0.010
(7.62 ± 0.25) 0.105 ± 0.010
(2.67 ± 0.25)
Lead Material
#22 AWG
(0.025 Dia.)
Solder Coated
Copper
Resistance
Value Code
XXXXXX
100R01
0.01 %
1.00 ± 0.125
(25.4 ± 3.18)
Model Number
Date Code
10
Week
Optional
Customer P/N
6 Digits Maximum
Tolerance
0.040 ± 0.005
(1.02 ± 0.13)
01
Year
Rear ViewSide ViewFront View
Vishay Precision Group, Inc.
www.vpgsensors.com
1
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Document No.: 63999
Revision: 15-Jul-2014
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