VH Datasheet, PDF (1/5 Pages) Vishay Siliconix – Bulk Metal® Foil Technology Hermetically Sealed Resistors, Aerospace

VH Hermetic
Vishay Foil Resistors
Bulk Metal^® Foil Technology
Hermetically Sealed Resistors, Aerospace
Product may not
be to scale
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.
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
TABLE 1 - MODEL SELECTION
MODEL
RESISTANCE STANDARD RESISTANCE MAXIMUM
AMBIENT
NUMBER
RANGE
TOLERANCE¹ % WORKING
POWER RATING^{3 †â€} 
(Ω)
TIGHTEST LOOSEST VOLTAGE² @ + 70°C @ + 125°C
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
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
*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.
AVERAGE
WEIGHT
(GRAMS)
1.4
DIMENSIONS
INCHES
mm
W 0.185 Maximum 4.70 Maximum
L 0.435 Maximum 11.05 Maximum
H 0.430 Maximum** 10.92 Maximum
LL 1 ± 0.125
25.4 ± 3.18
LS 0.150 ± 0.010⁴ 3.81 ± 0.25
ST 0.095 Maximum 2.41 Maximum
FIGURE 1 - STANDARD IMPRINTING AND DIMENSIONS
Front View
L
Rear View
W
VISHAY
H
XXXX
VHS555
Date Code
01 10
Year Week
LS
Model
Number
ST
100R01
0.01%
XXXX
Lead Material #22 AWG
Round Solder Coated Copper
Resistance
Value Code
Tolerance
Serial No.
(Optional Marking)
LL
SALES
• ISRAEL: [e-mail] • FRANCE/SWITZERLAND/SOUTHERN EUROPE: [e-mail] • AMERICAS: [e-mail]
• ASIA/JAPAN: [e-mail] • UK/HOLLAND/SCANDINAVIA: [e-mail] • GERMANY/CZECH REPUBLIC/AUSTRIA: [e-mail]
Document Number: 63004
For technical questions in the Americas, contact [e-mail]
Revision 02-Mar-05
For technical questions in Asia/Japan/Europe/Africa/Israel, contact [e-mail]
www.vishay.com
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