For technical questions in the Americas, contact foilsupport1@vishay.com
For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com
www.vishay.com
77
VH Hermetic
Vishay Foil Resistors
Document Number: 63004
Revision 02-Mar-05
THROUGH HOLE
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SALES
Bulk Metal® Foil Technology
Hermetically Sealed Resistors, Aerospace
FEATURES
• VH102K Series
Nominal Temperature Coefficient of Resistance:
– 0.3ppm/°C (0°C to + 25°C);
+ 0.3ppm/°C (+ 25°C to + 60°C);
– 1.0ppm/°C (– 55°C to + 25°C);
+ 1.0ppm/°C (+ 25°C to + 125°C)
• VHS102 Series
Nominal Temperature Coefficient of Resistance:
+ 0.6ppm/°C (0°C to + 25°C);
– 0.6ppm/°C (+ 25°C to + 60°C);
+ 2.2ppm/°C (– 55°C to + 25°C);
– 1.8ppm/°C (+ 25°C to + 125°C)
• VHS555 Temperature Coefficient of Resistance:
± 5ppm/°C (– 55°C to + 125°C);
• Selected TCR Tracking: to 0.5ppm/°C (matched sets)
• Load-Life Stability: ± 0.0025% maximum ∆R at 0.1 watt,
+ 60°C, 2,000 hours (VHS555)
• Power Rating: 0.6 Watts at + 70°C; 0.3 Watts at + 125°C
• Resistance Tolerance (Initial Resistance Accuracy):
± 0.005% tightest to ± 1.0% loosest
• Resistance Range: 1Ω to 150KΩ
The "VH" series of resistors is the hermetic version of sev-
eral molded "S" series devices. Hermetic sealing eliminates
the ingress of both oxygen, which degrades resistors over
long periods, and moisture which degrades resistors more
quickly. These parts are made with glass to metal seal
enclosures employing Kovar eyelets which allow the copper
leads to pass through the enclosure to minimize the thermal
EMF from the lead junctions. Rubber fill between the metal
housing and resistance element acts both as a mechanical
damper and thermal transfer path.
VHS102 and VH102K are the hermetically-sealed counter-
part of the S102C and S102K high-performance molded re-
sistors. VHS555 is the hermetically-sealed version of the
S555, MIL style RNC90Y.
MODEL RESISTANCE
STANDARD RESISTANCE
MAXIMUM AMBIENT
AVERAGE
DIMENSIONS
NUMBER RANGE TOLERANCE
1
% WORKING POWER RATING
3 ††
WEIGHT
(
Ω
) TIGHTEST LOOSEST VOLTAGE
2
@ + 70°C @ + 125°C(GRAMS)
INCHES mm
VH102K* 30.1 to 150K ± 0.005 ± 1.0
20 to < 30.1 ± 0.01 ± 1.0
VHS102 10 to < 20 ± 0.05 ± 1.0
5 to < 10 ± 0.10 ± 1.0
1 to < 5 ± 0.25 ± 1.0 300 0.6 W 0.3 W 1.4
VHS555† 30.1 to 150K ± 0.005 ± 1.0
16.2 to < 30.1 ± 0.05 ± 1.0
4.99 to < 16.2 ± 0.10 ± 1.0
1 to < 4.99 ± 0.25 ± 1.0
LS
Model
Number
VISHAY
XXXX
VHS555
ST
H
L
Date Code
W
Front View Rear View
Lead Material #22 AWG
Round Solder Coated Copper
Resistance
Value Code
Tolerance
Serial No.
(Optional Marking)
100R01
0.01%
XXXX
10
Week
01
Year
LL
TABLE 1 - MODEL SELECTION
FIGURE 1 - STANDARD IMPRINTING AND DIMENSIONS
*Available from 1 ohm to 100K only.
† Contains RNC90Y inside (4.99 ohms to 121 K).
†† Above 100Kohms VHS102 power is derated to 0.4 W @ + 70°C and 0.2 W @ + 125°C
**0.375H available.
See the third page in this datasheet for numbered footnotes.
Product may not
be to scale
W
L
H
LL
LS
ST
0.185 Maximum
0.435 Maximum
0.430 Maximum**
1 ± 0.125
0.150 ± 0.010
4
0.095 Maximum
4.70 Maximum
11.05 Maximum
10.92 Maximum
25.4 ± 3.18
3.81 ± 0.25
2.41 Maximum
For technical questions in the Americas, contact foilsupport1@vishay.com
For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com
Document Number: 63004
Revision 02-Mar-05
www.vishay.com
78
VH Hermetic
Vishay Foil Resistors
THROUGH HOLE
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SALES
TEMPERATURE COEFFICIENT OF RESISTANCE
VH102K
Nominal TCR6
(See Fig. 7 and 8 in datasheet “7 Technical Reasons to Specify
Vishay Bulk Metal® Foil Resistive Components.”)
Maximum TCR
(See Fig. 7 and 8 in datasheet “7 Technical Reasons to Specify
Vishay Bulk Metal® Foil Resistive Components.”)
Selected9 TCR Tracking10
(Closest Spread)
VHS102
Nominal TCR6
(See Fig. 1 and 2 in datasheet “7 Technical Reasons to Specify
Vishay Bulk Metal® Foil Resistive Components.”)
Standard TCR Spread from Nominal7
(See Fig. 5 and 6 in datasheet “7 Technical Reasons to Specify
Vishay Bulk Metal® Foil Resistive Components.”)
Maximum TCR Spread from Nominal14
(See Fig. 5 and 6 in datasheet “7 Technical Reasons to Specify
Vishay Bulk Metal® Foil Resistive Components.”)
Selected9 TCR Tracking10
VHS555
Nominal TCR6
(See Fig. 1 and 2 in datasheet “7 Technical Reasons to Specify
Vishay Bulk Metal® Foil Resistive Components.”)
Standard TCR Spread from Nominal7
(See Fig. 5 and 6 in datasheet “7 Technical Reasons to Specify
Vishay Bulk Metal® Foil Resistive Components.”)
Maximum TCR Spread from Nominal8
(See Fig. 5 and 6 in datasheet “7 Technical Reasons to Specify
Vishay Bulk Metal® Foil Resistive Components.”)
Selected8 TCR Tracking10
Stability14
Load Life at 2,000 hours.
Load Life at 10,000 hours.
Shelf Life Stability
Current Noise
High Frequency Operation
Rise/Decay Time
Inductance (L)11
Capacitance (C)
Voltage Coefficient
Thermal EMF13
Hermeticity
– 0.3ppm/°C (0°C to + 25°C)
+ 0.3ppm/°C (+ 25° to + 60°C)
– 1.0ppm/°C (– 55°C to + 25°C)
+ 1.0ppm/°C (+ 25°C to + 125°C)
± 2.5ppm/°C (0°C to + 25°C and + 25°C to + 60°C)
± 2.5ppm/°C (– 55°C to + 25°C and + 25°C to + 125°C)
0.5ppm/°C
+ 0.6ppm/°C(0°C to + 25°C)
– 0.6ppm/°C (+ 25°C to + 60°C)
+ 2.2ppm/°C (– 55°C to + 25°C)
– 1.8ppm/°C (+ 25°C to + 125°C)
± 1.5ppm/°C(0°C to + 25°C and + 25°C to + 60°C)
± 2.0ppm/°C (– 55°C to + 25°C and + 25°C to + 125°C)
± 2.5ppm/°C(0°C to + 25°C and + 25°C to + 60°C)
± 2.3ppm/°C (– 55°C to + 25°C and + 25°C to + 125°C)
0.5ppm/°C
+ 0.6ppm/°C(0°C to + 25°C)
– 0.6ppm/°C (+ 25° to + 60°C)
+ 2.2ppm/°C (– 55°C to + 25°C)
– 1.8ppm/°C (+ 25° to + 125°C)
± 1.5ppm/°C(0°C to + 25°C and + 25°C to + 60°C)
± 2.0ppm/°C (– 55°C to + 25°C and + 25°C to + 125°C)
± 2.5ppm/°C(0°C to + 25°C and + 25°C to + 60°C)
± 2.3ppm/°C (– 55°C to + 25°C and + 25°C to + 125°C)
0.5ppm/°C
VH102K VHS102 VHS555
± 0.025% ± 0.025% ± 0.015% @ 0.3W/+ 125°C
± 0.005% ± 0.005% ± 0.0025% @ 0.1W/+ 60°C
± 0.02% ± 0.02% ± 0.01% @ 0.05W/+ 125°C
± 5ppm (0.0005%) Maximum ∆R after 1 year
± 10ppm (0.001%) Maximum ∆R after 3 years
< 0.010µV (RMS)/Volt of applied voltage (– 40dB)
1.0 ns at 1KΩ
0.1µH maximum; 0.08µH typical
1.0pF maximum; 0.5pF typical
< 0.1ppm/V12
0.1µV/°C Maximum; 0.05µV/°C Typical 1µV/watt
10–7 Atmospheric cc/sec Maximum
Bulk Metal® Foil Technology
Hermetically Sealed Resistors, Aerospace
TABLE 2 - “H” SERIES SPECIFICATIONS5
For technical questions in the Americas, contact foilsupport1@vishay.com
For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com
www.vishay.com
79
VH Hermetic
Vishay Foil Resistors
Document Number: 63004
Revision 02-Mar-05
THROUGH HOLE
• ISRAEL: foilsales.israel@vishay.com • FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com • AMERICAS: foilsales.usa@vishay.com
• ASIA/JAPAN: foilsales.asia@vishay.com • UK/HOLLAND/SCANDINAVIA: foilsales.eunorth@vishay.com • GERMANY/CZECH REPUBLIC/AUSTRIA: foilsales.eucentral@vishay.com
SALES
FIGURE 2 - POWER DERATING CURVE
NOTES:
1. Standard Resistance Tolerance: ± 0.005%; ± 0.01%;
± 0.02%; ± 0.05%; ± 0.1%; ± 0.25%; ± 0.5%; ± 1.0%.
2. Not to exceed power rating of resistor.
3. See Figure 2 below.
4. 0.200" (5.08 mm) lead spacing available (except VHS555)–
specify VH102J (S102C type), VH102L (S102K type).
5. Maximum is 1.0% A.Q.L. standard for all specifications
except TCR. (For TCR information see notes 6 -10.)
Typical is a designers reference which represents that
85% of the units supplied, over a long period of time, will
be at least the figure shown or better.
6. Vishay Nominal TCR is defined as the chord slopes of
the relative change of resistance/temperature, expressed
in ppm (parts per million), called (RT) curve from 0°C to
+ 25°C and + 25°C to + 60°C (“Instrument” Range); and
from – 55°C to + 25°C and + 25°C to + 125°C (“Military”
Range). These specifications and the definition of
Nominal TCR apply to all resistance values including
low-value resistors.
7. Vishay Standard TCR Spread is defined as a designers
reference which represents that at least 92% of the units,
and 82% of the lots, supplied by Vishay will be within
the stated band centered on the nominal curve. This
definition of the Vishay Standard TCR Spread from
Nominal applies to all resistance values. However, as
the resistance value decreases below 80 ohms, the
Vishay Standard TCR Spread from Nominal specification
starts to increase. (See Figure 3 in data sheet “7 Technical
Reasons to specify BMF Resistive Components.”)
Bulk Metal® Foil Technology
Hermetically Sealed Resistors, Aerospace
8. Vishay Maximum TCR Spread is defined as the 3 σ (Sigma)
limit of a normal Gaussian distribution (99.73% of a production
lot) which is within a band, centered on the nominal curve.
This Vishay Maximum TCR Spread is no greater than ±
2.5ppm/°C from nominal throughout the full temperature
range. This definition of the Vishay Maximum TCR Spread
from Nominal applies to all resistance values. However, as
the resistance value decreases below 80 ohms, the Vishay
maximum TCR Spread from Nominal specification starts to
increase. (See Figure 3 in datasheet “7 Technical Reasons
to Specify Vishay Bulk Metal® Foil Resistive Components.”)
9. Selected TCR Tracking is available for specially ordered lots
of resistors. The selected TCR tracking can be 3, 2, 1 and as
close as 0.5ppm/°C throughout the full temperature range.
10. TCR tracking is a measure of the similarity of resistance
value change in two or more resistors which are undergoing
the same temperature changes. Tracking could be
expressed as the difference in the temperature coefficients of
the resistors, expressed in ppm/°C as (∆R1/R1 – ∆R2/R2) x
10-6/∆T°C. When a number of resistors are referenced to a
nominal TCR, the spread or envelope around the nominal
would be the difference. If the spread is ± 1.5ppm/°C about a
nominal, the tracking, as defined above, will be 3ppm/°C.
11 Inductance (L) due mainly to the leads.
12. The resolution limit of existing test equipment (within the
measurement capability of the equipment, or “essentially
zero.”)
13. µV/°C relates to EMF due to lead temperature difference and
µV/watt due to power applied to the resistor.
14. Load life ∆R Maximum can be reduced through burn-in
procedure.
+100
+75
+50
+25
0
–75 –50 –25 0 +25 +50 +75 +100 +125 +150 +175 +200
Ambient Temperature (°C)
Percent of Rated Power @ +125°C
–55°C
+200
+70°C Double Rated Power
Rated Power
+175
+150
+125
For technical questions in the Americas, contact foilsupport1@vishay.com
For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com
Document Number: 63004
Revision 02-Mar-05
www.vishay.com
80
VH Hermetic
Vishay Foil Resistors
THROUGH HOLE
• ISRAEL: foilsales.israel@vishay.com • FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com • AMERICAS: foilsales.usa@vishay.com
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SALES
**Resistance Range limit of 100KΩ for VH102K, 150KΩ for VHS555, 150KΩ for VHS102.
TABLE 3 - ENVIRONMENTAL PERFORMANCE COMPARISON
See previous page for numbered footnotes.
*These figures can be found in data sheet “7 Technical Reasons to Specify Bulk Metal® Foil Resistive Components.”
Bulk Metal® Foil Technology
Hermetically Sealed Resistors, Aerospace
MIL-PRF-55182/9 VH102K VHS102 VHS555
CHARACTERISTIC Y MAXIMUM
∆
R
TYPICAL5 ∆R TYPICAL5 ∆R TYPICAL5 ∆R
Test Group I
Thermal Shock ± 0.05% ± 0.002% ± 0.002% ± 0.002%
Overload ± 0.05% ± 0.003% ± 0.003% ± 0.003%
Test Group II
Resistance Temp Char. ± 5ppm/°C See Figures 7 & 8* See Figures 1 & 2, and Figures 5 & 6*
Temp Storage ± 0.05% ± 0.005% ± 0.005% ± 0.0025
Low Temp Operation ± 0.05% ± 0.005% ± 0.005% ± 0.005%
Terminal Strength ± 0.02% ± 0.002% ± 0.002% ± 0.002%
Test Group III
DWV ± 0.02% ± 0.005% ± 0.005% ± 0.002%
Insulation Resistance 104MΩ40 x 105MΩ40 x 105MΩ40 x 105MΩ
Resistance to Solder Heat ± 0.02% ± 0.002% ± 0.002% ± 0.002%
Moisture Resistance ± 0.05% ± 0.005% ± 0.005% ± 0.005%
Test Group IV
Shock ± 0.01% ± 0.002% ± 0.002% ± 0.002%
Vibration ± 0.02% ± 0.002% ± 0.002% ± 0.002%
Test Group V
Life Test @ 0.3 W/+ 125°C
2,000 Hours ± 0.05% ± 0.03% ± 0.03% ± 0.01%
10,000 Hours ± 0.5% ± 0.05% ± 0.05% ± 0.02%
Test Group Va
+ 70°C Power Rating ± 0.05% ± 0.02% ± 0.02% ± 0.02%
Test Group VI
High Temp Exposure ± 0.05% ± 0.05% ± 0.05% ± 0.04%
Test Group VII
Voltage Coefficient 0.0005%/V < 0.00001%/V < 0.00001%/V < 0.00001%/V
Please specify Vishay VH102K, VHS102 and VHS555 resistors as follows: (See Imprinting Illustration and Table 1, 1st page in this
datasheet, for further details).
Example: VHS555 100R01 0.01%
MODEL NO. RESISTANCE VALUE TOLERANCE
Resistance Value, in ohms, is expressed by a series of 6 characters, 5 of which represent significant digits while the 6th is a dual purpose
letter that designates both the multiplier and the location of the comma or decimal.
RESISTANCE LETTER MULTIPLIER
RANGE** DESIGNATOR FACTOR EXAMPLE
1Ω to < 1KΩR x 1 100R01 = 100.01Ω
1KΩ to < 150KΩKx 10
315K231 = 15,231Ω
TABLE 4 - ORDERING INFORMATION
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
document or by any conduct of Vishay.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
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