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VHP-3, VHP-4, VPR247
Vishay Foil Resistors
TABLE 4 - ENVIRONMENTAL PERFORMANCE
Test Group I
METHOD
PARAGRAPH 6)
MIL-PRF-39009
Δ R LIMITS
VHP-3, VHP-4 AND VPR247
TYPICAL Δ R TEST DATA 9)
Conditioning
4.8.2
± 0.2 % + 0.01 Ω
± 0.03 %
Test Group II
Resistance temperature
Characteristic
(- 55 °C to + 125 °C)
4.8.4
<1 Ω
± 100 ppm/°C;
1 Ω to 19.6 Ω :
See tables 1 and 2, page 1
± 50 ppm/°C;
≥ 20 Ω :
± 30 ppm/°C
Low temperature storage
4.8.16
± 0.3 % + 0.01 Ω
± 0.005 %
DWV
(300 V at atmospheric pressure)
Insulation resistance
Low temperature operation
4.8.5
4.8.6
4.8.7
± 0.2 % + 0.01 Ω
10 4 M Ω
± 0.3 % + 0.01 Ω
± 0.005 %
> 10 4 M Ω
± 0.01 %
Short time overload 8)
(5 s at 15 W)
Moisture resistance
Terminal strength
4.8.8
4.8.9
4.8.10
± 0.3 % + 0.01 Ω
± 0.5 % + 0.01 Ω
± 0.2 % + 0.01 Ω
± 0.03 %
± 0.02 %
± 0.005 %
Test Group III
Shock - specified pulse
(Post-test DWV at 300 V)
4.8.11
± 0.2 % + 0.01 Ω
± 0.005 %
Vibration - high frequency
(Post-test DWV at 300 V)
4.8.12
± 0.2 % + 0.01 Ω
± 0.005 %
Test Group IV
Life test
10 W at 25 °C for 2000 h
4.8.13
± 1.0 % + 0.01 Ω
± 0.01 %
80 % power at + 70 °C
for 2000 h
-
-
± 0.04 %
Test Group V
High temperature exposure
2000 h at + 150 °C
4.8.14
± 1.0 % + 0.05 Ω
± 0.05 %
Notes
1. Whichever is lower.
4. The resolution limit of existing test equipment (within the
2. Heat sink chassis
dimensions
and
requirements
per
measurement capability of the equipment, or “essentially zero”).
MIL-PRF-39009/1:
5. Not to exceed power rating of resistor.
6. Vishay test data as compared to MIL-PRF-39009 is shown for
INCHES
MM
illustration purposes, Vishay test conditions that deviate from the
L
W
H
T
6.00
4.00
2.00
0.04
152.4
101.6
50.8
1.0
Mil test method are noted within parentheses.
7. Maximum ambient temperature rating is + 150 °C.
8. Maximum overload rating is 15 W (5 x rated power in free air;
1.5 x rated power on heatsink), with applied voltage not to
exceed 750 V.
3. Inductance (L) due mainly to the leads.
9. Δ R’s are as shown plus 0.001 Ω to allow for measurement errors
at low resistance values.
www.foilresistors.com
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For any questions, contact: foil@vishaypg.com
Document Number: 63005
Revision: 23-Mar-10
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