Document Number: 63013

For any questions, contact: foil@vishay.com

www.vishay.com

Revision: 05-Jun-07

1

VPR5, VPR7

Vishay Foil Resistors

with TCR of 5 ppm/°C and Power Rating up to 7 Watts

Any value available within resistance range

direct replacements for certain wirewound devices but

without the inductive characteristics of wirewounds. The

anodized aluminum housing is drilled and countersunk to

accept flat head screws for thermal mounting. Because the

device is internally Kelvin connected, there is no restriction

on the lead lengths as would be the case if this were a two

terminal device. Frequently used in YIG oscillator circuits

these devices contribute to superior frequency stability.

Note

1. Mounted on aluminum chassis (6" L x 4" W x 2" H x 0.040" Th)

per MIL-R-39009/1B.

FEATURES

• Temperature Coefficient of Resistance (TCR):

± 5 ppm/°C (Above 10

Ω)

± 10 ppm/°C (Below 10

Ω)

• Tolerance: to ± 0.01 %

• Resistance Range: 1 Ω to 100 kΩ

• Electrostatic Discharge (ESD) above 25 000 V

• Non Inductive, Non Capacitive Design

• Rise Time: 1.0 ns without ringing

• Current Noise: < - 40 dB

• Thermal EMF: < 0.05 µV/°C typical

• Voltage Coefficient: < 0.1 ppm/V

• Non-Inductive: < 0.08 µH

• Non Hot Spot Design

• Terminal Finishes available: Lead (Pb)-free

Tin/Lead Alloy

• Prototype Samples available from 48 hours. Please

contact foil@vishay.com

• For better performances, please contact us

* Pb containing terminations are not RoHS compliant, exemptions may apply

TABLE 1 - SPECIFICATIONS

MODEL

NUMBER

RESISTANCE

RANGE

(

Ω)

TOLERANCE

TO

MAXIMUM

WORKING

VOLTAGE

RATING

at 25 °C

VPR5

1 to 10

± 0.1 %

300 V

5 W

> 10 to 100

± 0.05 %

> 100 to 100K

± 0.01 %

VPR7

1 to 10

± 0.1 %

300 V

7 W

> 10 to 100

± 0.05 %

> 100 to 100K

± 0.01 %

FIGURE 1 - POWER DERATING CURVE

Available

Pb-free

RoHS*

COMPLIANT

+ 100

+ 75

+ 50

+ 25

0

+ 50

+ 100

+ 150

Ambient Temperature (°C)

0

- 50

- 55

+ 25