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Document Number: 63143

2

Revision: 03-Nov-08

VSA101 (Z-Foil)

Vishay Foil Resistors

Ultra High Precision Axial Z-Foil Resistor with

TCR of ± 0.05 ppm/°C, PCR of 5 ppm at Rated Power,

Tolerance of ± 0.005 % and Load Life Stability of ± 0.005 %

FIGURE 2 - TRIMMING TO VALUES

(Conceptual Illustration)

Mutual Inductance

Reduction due

to Opposing

Current in

Adjacent Lines

Current Path

Before Trimming

Note: Foil shown in black, etched spaces in white

Interloop Capacitance

Reduction in Series

Trimming Process

Removes this Material

from Shorting Strip Area

Changing Current Path

and Increasing

Resistance

Current Path

After Trimming

FIGURE 3 - TYPICAL TCR CURVE Z-FOIL

+ 500

+ 200

+ 100

0

- 100

- 200

- 300

- 500

- 55

- 25

+ 25

+ 60

+ 75

+ 100

+ 125

Ambient Temperature (°C)

ΔR

R

(ppm)

0

0.05 ppm/°C

- 0.1 ppm/°C

0.1 ppm/°C

0.14 ppm/°C

0.2 ppm/°C

- 0.16 ppm/°C

- 400

+ 300

+ 400

FIGURE 4 - STANDARD IMPRINTING AND DIMENSIONS

BODY

LEAD

A - LENGTH (MAX.)

T - WIDTH (MAX.)

H - HEIGHT (MAX.)

C - LENGTH (MIN.)

D - DIAMETER

Inch

mm

Inch

mm

Inch

mm

Inch

mm

Inch

mm

0.305

7.75

0.102

2.59

0.26

6.60

1.5

38.10

0.025

0.64

TABLE 2 - VSA101 SPECIFICATIONS

Stability

Load life at 2000 h

± 0.005 % max.

ΔR at 0.1 W/+ 70 °C

± 0.015 % max.

ΔR at 0.3 W/+ 125 °C

Load life at 10 000 h

± 0.01 % max.

ΔR at 0.05 W/+ 125 °C

± 0.05 % max.

ΔR at 0.3 W/+ 125 °C

T

D

A

H

C

VISHAY

0806

VSA101

Date Code

08

06

Year Week

10K010

0.01 %

Tolerance

Resistance

Value