DSMZ (Z-Foil)

Vishay Foil Resistors

Voltage Divider, TCR Tracking of < 0.1 ppm/°C, PCR of

± 5 ppm at Rated Power and Stability of ± 0.005 % (50 ppm)

www.vishay.com

For any questions, contact: foil@vishay.com

Document Number: 63121

2

Revision: 06-Aug-07

FIGURE 3 - TRIMMING TO VALUES

(Conceptual Illustration)

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 4 - TYPICAL Z-FOIL TCR CURVE

(For more details, see table 1)

+ 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 5 - DIMENSIONS AND IMPRINTING

DIMENSIONS

L

W

H

P

TW

TH

S

t

INCHES

0.160 ± 0.008 0.106 ± 0.008 0.063 ± 0.008 0.031 ± 0.005

0.031 ± 0.004

0.043 ± 0.008

0.100 ± 0.008

0.005 ± 0.002

MILLIMETERS

4.06 ± 0.20

2.69 ± 0.20

1.60 ± 0.20

0.79 ± 0.13

0.79 ± 0.10

1.09 ± 0.20

2.54 ± 0.20

0.13 ± 0.05

FIGURE 6 - RECOMMENDED LAND PATTERN

w

P

P

t

L

S

TW

TW

W

E

I

V

T

N

O

R

F

W

E

I

V

E

D

I

S

STAND OFF

BOTTOM VIEW

10K Q 10K

V B0219

VALUE R1

RATIO TOLERANCE CODE

VALUE R2

DATE CODE

TOP VIEW

1

2

3

Note:

R1 - between PIN1 and PIN3

R2 - between PIN2 and PIN3

0.063 ± 0.004

(1.6 ± 0.1)

0.100 ± 0.004

(2.54 ± 0.1)