Military Established Reliability
Bulk Metal
®
and Technology
BulkMetal®FoilTechnologyRNC90YFoilRNC90Z(Z-Foil)toMIL-PRF-55182/9
RNC90Y and RNC90Z (Z-Foil) to MIL-PRF-55182/9
FEATURES
• QPL product with established reliability (ER)
• “R” level high reliability resistor qualified to
MIL-PRF-55182/9
• Load life stability: ±0.05% ΔR 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 Ω to 121 kΩ (RNC90Y)
30.1 Ω to 121 kΩ (RNC90Z)
• Specially conditioned non-QPL resistors available
See data sheet “Improved Performance Tested”
• Fast thermal stabilization
• Electrostatic discharge (ESD) above 25 000 V
• Non inductive, non capacitive design
• Current noise <–42 dB
• Prototype sample available
INTRODUCTION
Military Established Reliability resistors from Vishay Foil
Resistors (VFR) are available in resistance values from
4.99 Ω through 121 kΩ and with tolerances from ±0.005%
to ±1.0%. The same resistors are also available as non-
qualified products for customers desiring higher or lower
resistance values and the same or better performance
capabilities (see Table 2). Both qualified and non-qualified
versions 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.
The RNC90Y has been the benchmark for high-
precision, established-reliability discrete resistors since
1982. In 2000, our engineers achieved a technological
breakthrough with the introduction of the commercial
ultra-precision, low-TCR Z201 resistor. This breakthrough
allowed for the introduction of a resistor with very low
TCR and an “R” reliability level. The RNC90Z TCR limit of
±2 ppm/°C over the extended range of –55°C to +175°C
is a significant improvement over the existing
RNC90Y specification.
The RNC90Z is a direct replacement for the RNC90Y.
Figure 1 – Comparison of RNC90Y to RNC90Z Temperature Coefficient of Resistance
+1000
RNC90Y
+1000
+1000
RNC90Z
+1000
+400
+500
R/R (ppm)
R/R (ppm)
0
– 400
+160
+300
+200
– 200
– 300
– 160
0
– 500
– 1000
– 55
Specification ± 5 ppm/°C ±10 ppm/°C
4089-EN
Rev 27-Jan-2021
For any questions, contact
foil@vpgsensors.com
25
Temperature (°C)
125
– 1000
175
– 1000
– 55
Specification ± 2 ppm/°C
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1
25
Temperature (°C)
125
– 1000
175
Military Established Reliability
Table 1 – Specifications Comparison
(1)
SPECIFICATION
RNC90Y
(QUALIFIED)
MIL-PRF-55182/9
CHARACTERISTIC
Y LIMITS
±5 ppm/°C
(–55°C to +125°C)
±10 ppm/°C
(+125°C to +175°C)
4.99 Ω to 121 kΩ
Level R
RNC90Z
(QUALIFIED)
MIL-PRF-55182/9
CHARACTERISTIC
Z LIMITS
±2 ppm/°C
(–55°C to +175°C)
30.1 Ω to 121 kΩ
Level R
S555
(NON-QUALIFIED)
VFR PERFORMANCE
LIMITS
±5 ppm/°C
(–55°C to +125°C)
1 Ω to 150 kΩ
Not specified
Z555 (NON-QUALIFIED)
VFR PERFORMANCE
LIMITS
±3 ppm/°C ±2.5 ppm/°C ±2 ppm/°C
(–55°C to +125°C)
4.99 Ω
to 25 Ω
>25 Ω
to 80 Ω
Not specified
>80 Ω
Temperature
Coefficient of
Resistance
Resistance
Range
Failure Rate
Load-Life Stability
0.3 W at +125°C
at 2000 h
±0.05% maximum ΔR ±0.05% maximum ΔR ±0.015% maximum ΔR
(2)
at 10 000 h
±0.5% maximum ΔR ±0.5% maximum ΔR ±0.05% maximum ΔR
(2)
Current Noise
High-Frequency
Operation
Rise Time
Inductance
(3)
(L)
Capacitance (C)
Voltage
Coefficient
Working Voltage
(4)
Thermal EMF
(5)
Not specified
Not specified
–40 dB minimum
±0.015% maximum ΔR
(2)
±0.05% maximum ΔR
(2)
–40 dB minimum
Not specified
Not specified
Not specified
0.0005%/V
300 V maximum
Not specified
Not specified
Not specified
Not specified
0.0005%/V
300 V maximum
Not specified
1.0 ns at 1 kΩ
0.1 µH maximum
0.08 µH typical
1.0 pF maximum
0.5 pF typical
0.0001%/V
300 V maximum
0.1 µV/°C maximum
1 µV/W maximum
1.0 ns at 1 kΩ
0.1 µH maximum
0.08 µH typical
1.0 pF maximum
0.5 pF typical
0.0001%/V
300 V maximum
0.1 µV/°C maximum
1 µV/W maximum
Notes
(1)
Qualification and failure rate verification test data is maintained by Vishay Foil Resistors and is available upon request.
Lot traceability and identification data is maintained by VFR for 7 years.
(2)
Load life ΔR Maximum can be reduced by 80% through a screening procedure. 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.
Figure 2 – Trimming to Values
Interloop
capacitance
reduction
in series
Mutual
inductance
reduction
due to change
in current
direction
Current path
before trimming
Current path after trimming
Figure 2 – Power Derating Curve
Percent of Rated Power
+100
+75
+50
+25
0
– 50
– 25
0
+25 +50
+75 +100 +125 +150 +175
– 55°C
Note
To acquire a precision resistance value, the Bulk Metal
®
Foil
chip is trimmed by selectively removing built-in “shorting bars.”
To increase the resistance in known increments, marked
areas are cut, producing progressively smaller increases in
resistance. This method reduces the effect of “hot spots” and
improves the long-term stability of Bulk Metal
®
Foil resistors.
Trimming process
removes this material
from shorting strip area
changing current path
and increasing
resistance
Foil shown in black, etched spaces in white
Ambient Temperature (°C)
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4089-EN
Rev 27-Jan-2021
Military Established Reliability
Figure 4 – Imprinting and Dimensions
RNC90Y and RNC90Z Military Approved Resistors
Front View
L
VFR
0066A
XXXXX J
Side View
Manufacturers
Identification
Number
ST
JAN Designator
(not present if
non-qualified)
W
Resistance
Tolerance
Code
Lead Material
#22 AWG
(0.025 dia.)
Solder Coated
Copper
Rear View
Model Number
XXXXX
100R01
B
R
H
Mfr. Code
07
11
B
Factory Year Week
Resistance
Value Code
Failure Rate Code
(not present if
non-qualified)
LL
LS
(1)
Note
(1)
0.200 in (5.08 mm) lead spacing available – specify Model Number RNC90T for RNC90Y, and RNC90S for RNC90Z
Table 2 – Model Selection
MODEL
NUMBER
RESISTANCE
RANGE (Ω)
STANDARD
RESISTANCE
TOLERANCE
TIGHTEST LOOSEST
%
%
±0.005
±0.05
±0.1
±0.005
±0.005
±0.01
±0.05
±0.1
±0.5
±0.005
±0.005
±0.01
±0.05
±1.0
±1.0
±1.0
±1.0
±1.0
±1.0
±1.0
±1.0
±1.0
±1.0
±1.0
±1.0
±1.0
FAILURE
RATE
AMBIENT
POWER RATING
at
+70°C
0.6 W
0.6 W
at
+125°C
0.3 W
0.3 W
AVERAGE
WEIGHT
(g)
DIMENSIONS
INCHES
mm
RNC90Y
RNC90Z
30.1 to 121K
16.2 to 30.0
4.99 to 16.0
30.1 to 121K
30.1 to 121K
20 to <30.1
5 to <20
2 to <5
1 to <2
>121K to 150K
M, P, R
(See
Table 3)
0.6
0.6
W: 0.105±0.010
L: 0.300±0.010
H: 0.326±0.010
ST: 0.010±0.005
LL: 1.000±0.125
LS: 0.150±0.010
2.67±0.25
7.62±0.25
8.28±0.25
0.254±0.13
25.4±3.18
3.81±0.25
S555
(NON QPL)
–
0.6 W
0.3 W
0.6
–
–
0.4 W
0.6 W
0.2 W
0.3 W
0.6
0.6
Z555
(NON QPL)
30.1 to 121K
20 to <30.1
4.99 to <20R
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
4089-EN
Rev 27-Jan-2021
For any questions, contact
foil@vpgsensors.com
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3
Military Established Reliability
Table 3 – Global Part Number Information
NEW GLOBAL PART NUMBER: Y1189100R500AR0L (preferred part number format)
DENOTES PRECISION
Y
VALUE
R
=
Ω
K
= k
Ω
LIFE FAILURE RATE (LFR)
(1)
R
= ± 0.01%
P
= ±0.1%
M
= ±1.0%
0
= standard
1 - 999
= custom
AER
(2)
Y
1
1
8
9
1
0
0
R
5
0
0
A
R
PACKAGING
0
L
PRODUCT CODE
1189
= RNC90Z
0089
= RNC90Y
1508
= RNC90T
1506
= RNC90S
0088
= S555
1288
= Z555
RESISTANCE TOLERANCE
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
Ω
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
MODEL
RNC90Z
RNC90S
RNC90Y
RNC90T
S555
Z555
100R50
OHMIC VALUE
100.5
Ω
A
RESISTANCE
TOLERANCE
V
= ±0.005%
T
= ± 0.01%
A
= ±0.05%
B
= ±0.1%
D
= ±0.5%
F
= ± 1.0%
R
LIFE FAILURE
RATE (LFR)
(1)
R
= ± 0.01%
P
= ± 0.1%
M
= ±1.0%
B
PACKAGING
B
= bulk pack
Note
(1)
Applicable only for QPL part. For S555 and Z555 please omit the Life Failure Rate designator from the part number.
(2)
For non-standard requests, please contact application engineering.
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4089-EN
Rev 27-Jan-2021
Military Established Reliability
CAGE #0066A
“Commercial and Government Entity”
Formerly “FSCM”
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) vs. QPL
TEST
GROUP
TEST
Burn-in
Thermal Shock and
Overload Combined
Resistance Temperature
Characteristic
II
Low Temperature Storage
Low Temperature Operation
Terminal Strength
DWV
Insulation Resistance
Resistance to Soldering Heat
Moisture Resistance
Shock
Vibration
Load Life at +125°C; 2000 h
Load Life at +125°C; 10 000 h
+85°C Power Rating
+70°C Power Rating
+25°C Power Rating
Storage Life
High Temperature Exposure
Max. Allowance Reactance
Current Noise
Voltage Coefficient
Thermal EMF
RNC90Y
MIL-PRF-55182 & MIL-PRF-55182/9
METHOD PARAGRAPH
4.8.3.3
4.8.2
4.8.3
4.8.9
4.8.23
4.8.10
4.8.11
4.8.12
4.8.13
4.8.14
4.8.15
4.8.16
4.8.17
4.8.18
4.8.18
–
4.8.18
–
–
4.8.19
–
–
4.8.20
–
LIMITS
±0.05%
–
±0.05%
±5 ppm/°C
±0.05%
±0.05%
±0.02%
±0.02%
10
4
MΩ
±0.02%
±0.05%
±0.01%
±0.02%
±0.05%
±0.5%
–
±0.05%
–
–
±0.5%
–
–
0.0005%/V (5 ppm/V)
–
VISHAY FOIL RESISTORS
IMPROVED PERFORMANCE
TESTING
(IPT) LIMITS
±0.0025%
–
±0.005%
<±2 ppm/°C
(–55°C to +125°C)
(Can be sorted for tighter tracking)
±0.0025%
±0.0025%
±0.001%
±0.001%
>10
4
MΩ
±0.001%
±0.015%
±0.0025%
±0.0025%
±0.005% (50 ppm)
±0.015% (150 ppm)
±0.005% (50 ppm)
±0.005% (50 ppm)
±0.005% (50 ppm)
±0.0025%
±0.005%
<1%
<–42 dB
<0.00001%/V (<0.1 ppm/V)
0.1 µV/°C
I
III
IV
V
V (a)
V (b)
VI
VII
VIII
Figure 4 – Imprinting and Dimensions
Front View
0.300 ± 0.010
(7.62 ± 0.25)
VFR
XXXX
3XXXXX
Date Code
10
01
Year Week
0.010 ± 0.005
(0.254 ± 0.13)
Model Number
0.150 ± 0.010
(3.81 ± 0.25)
Side View
0.105 ± 0.010
(2.67 ± 0.25)
Rear View
Optional
Customer P/N
6 Digits Maximum
Resistance
Value Code
Tolerance
1.00 ± 0.125
(25.4 ± 3.18)
0.326 ± 0.010
(8.28 ± 0.25)
XXXXXX
100R01
0.01%
Lead Material
#22 AWG
(0.025 Dia.)
Solder Coated
Copper
4089-EN
Rev 27-Jan-2021
For any questions, contact
foil@vpgsensors.com
www.vishayfoilresistors.com
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