VHD200, VHD144

Voltage Dividers with TCR Tracking of 0.1 ppm/°C

and Tolerance Match down to 0.001 %

www.vishay.com

For any questions, contact: foil@vishay.com

Document Number: 63036

2

Revision: 13-Nov-07

Notes

1. Lead wires: #22 AWG solder coated copper, 0.75" minimum length.

2. Each resistor contains 1 chip consisting of two resistive elements. Tol: ± 0.020".

FIGURE 1 - TYPICAL TCR CURVE

(For more details, see table 1)

- 50

- 25

0

+ 20

+ 50

+ 75

+ 100

+ 125

- 55

+ 150

+ 100

+ 50

0

- 50

- 100

- 150

- 200

R

(ppm)

Ambient Temperature (°C)

± 2 ppm/°C (+ 25 °C Reference)

FIGURE 2 - TRIMMING TO VALUES

Mutual Inductance

Reduction due

to Change in

Current Direction

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 - VHD200 AND VHD144 STANDARD PRINTING AND DIMENSIONS in inches (millimeters)

FIGURE 2 - POWER DERATING CURVE

VHD144

VHD200

VISHAY

0746

VHD200

1

Low Resistance

Value Indicator

0.398

(10.11)

0.430

(10.92)

0.047

(1.19)

Match

Tolerance

Date Code

Model No .

0.095

(2.41)

(19.05)

123

0.146

(3.71)

0.435

(11.05)

0.370

(9.40)

0.1 (2.54)

0.185

(4.70)

Standard Printing and Dimensions

12

3

R

1

R

2

100

75

50

25

0

- 50

0

+ 50

+ 100

+ 150

Ambient Temperature (°C)

- 55 °C

+ 70

100

75

50

25

0

- 50

0

+ 50

+ 100

+ 130

Ambient Temperature (°C)

- 55 °C

+ 25

+ 125