Document Number: 63138

For any questions, contact: foil@vishay.com

www.vishay.com

Revision: 03-Nov-08

3

RS92N, RS92NA, AN

High Precision Foil Resistor with TCR of ± 2.0 ppm/°C,

Tolerance of ± 0.01 % and Load Life Stability

of ± 0.005 % CECC Qualified

Vishay Foil Resistors

FIGURE 1 - STANDARD IMPRINTING AND DIMENSIONS

Note

1. The standoffs shall be so located as to give a lead clearance of 0.010" minimum between the resistor body and the printed circuit board

when the standoffs are seated on the printed circuit board. This is to allow for proper cleaning of flux and other contaminants from the unit

after all soldering processes.

MODEL

DIM.

LS

W

L

H

ST

LL

WEIGHT

NOMINAL

RS92NA

mm

3.81 ± 0.13

2.50 max.

7.50 max.

8.00 max.

0.254 min.

25.4 min.

0.6 g

RS92N

mm

5.08 ± 0.076

2.50 max.

7.50 max.

8.00 max.

0.254 min.

25.4 min.

0.6 g

AN

mm

5.08 ± 0.076

2.50 max.

7.50 max.

8.00 max.

0.254 min.

25.4 min.

0.6 g

FIGURE 2 - TRIMMING TO VALUES (Conceptual Illustration)

LS

Model Number

VISHAY

XXXX

RS92

ST

1)

H

L

Date Code

W

Front View

Rear View

Lead Material #22 AWG

Round Solder Coated Copper

Optional Customer Part Number

Print specification, etc. if required

Resistance

Value Code

Tolerance

XXXXXX

100R01

0.01 %

LL

SW

10

Week

01

Year

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 - POWER RATING CHART

1.00

0.75

0.50

0.25

0

0

25

50

75

100

125

150

175

Ambient Temperature (°C)

+ 70 °C

+ 155 °C

FIGURE 4 -FOIL RESISTOR TCR

IN MILITARY RANGE

- 50

- 25

0

+ 25

+ 50

+ 75

+ 100

+ 125

- 55

C Alloy

2 ppm/°C

2 ppm/

+ 150

+ 100

+ 50

0

- 50

- 100

- 150

- 200

R

(ppm)

Temperature (°C)