Document Number: 63086

For technical questions, contact: foil@vishay.com

www.vishay.com

Revision: 02-Mar-05

4

Power Current Sense Resistors

Rapid

ΔR Stabilization - Low WCR - Low TCR

Vishay Foil Resistors

SALES

• 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

• FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com

• ISRAEL: foilsales.israel@vishay.com

NOTES:

1. Mounted on a cooled heat sink held at + 25°C

2. Heatsink - Aluminum (6" L x 4" W x 2" H x 0.04" THK)

3. Whichever is lower

TABLE 1 - RESISTANCE VALUE VS TOLERANCE

RESISTANCE RANGE (

Ω)

STANDARD TOLERANCE (%)

10 to 500

± 0.01 %

5 to < 10

± 0.02 %

2 to < 5

± 0.05 %

1 to < 2

± 0.10 %

0.5 to < 1

± 0.25 %

0.25 to < 0.5

± 0.50 %

TABLE 2 - SPECIFICATIONS

TEST OR CONDITION

PERFORMANCE

Wattage Coefficient of Resistance (WCR)

Temperature Coefficient of Resistance (TCR)

(- 55 °C to + 125 °C, + 25 °C Reference)

≥ 1.0 Ω to 500 Ω, ± 2 ppm/°C Maximum

0R25 to < 1.0

Ω, ± 3 ppm/°C Maximum

Thermal Resistance

Maximum Ambient Temperature

Rated Power

Zero Power

+ 25 °C

+ 150 °C

Power Rating

at + 25 °C

VHP4Z

VPR247Z

VFP4Z

VCS331Z

VCS332Z

Load Life Stability

± 0.05 % Max

ΔR, 10 W on heat sink at + 25 °C, 2000 hours

± 0.01 % Max

ΔR, 3 W on heat sink at + 25 °C, 2000 hours

± 0.05 % Max

ΔR, 3 W in free air at + 25 °C, 2000 hours

Inductance

0.1 µH Maximum; 0.08 µH Typical

Voltage Coefficient

< 0.1 ppm/V

Current Noise

< 0.010 µV(RMS)/Volt of applied voltage (- 40 dB)

TABLE 3 - ORDERING INFORMATION

Please specify Vishay VHP4Z, VPR247Z, VFP4Z, VCS331Z, VCS332Z series resistors as follows:

MODEL NO.

RESISTANCE VALUE

TOLERANCE

VHP4Z

RESISTANCE

RANGE

LETTER

DESIGNATOR

MULTIPLIER

FACTOR

0.01 %

0.25 to < 500

Ω

R

x 1

Example: 100R01 = 100.01

Ω

Resistance Value, in

Ω, 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.