Military and Space Established Reliability

Vishay Foil Resistors

www.foilresistors.com

Document Number: 63007

2

Revision: 30-Jul-12



FIGURE 1 - COMPARISON OF RNC90Y TO RNC90Z TEMPERATURE COEFFICIENT OF RESISTANCE

+ 160

0

- 160

+ 1000

- 1000

Temperature (°C)

Specification ± 2 ppm/°C

- 200

+ 300

- 1000

RNC90Z

+ 1000

- 55

25

125

175

- 300

+ 200

+ 400

0

- 400

+ 1000

- 1000

Temperature (°C)

Specification ± 5 ppm/°C

- 500

+ 500

± 10 ppm/°C

- 1000

RNC90Y

+ 1000

- 55

25

125

175

FIGURE 2 - 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 3 - POWER DERATING CURVE

200

150

100

50

0

- 50

- 25

0

+ 25 + 50 + 75 + 100

+ 125

+ 150

+ 175

Ambient Temperature °C

+ 70 °C

Rated Power

FIGURE 4 - IMPRINTING AND DIMENSIONS

RNC90Y and RNC90Z Military Approved Resistors

W

Lead Material

#22 AWG

(0.025 Dia.)

Solder Coated

Copper

Side View

Resistance

Value Code

XXXXX

100R01

B

R

LL

SW

Model Number

Failure Rate Code

(Not Present If

Non-Qualified)

Resistance

Tolerance

Code

Rear View

LS

1)

Jan Designator

(Non Present If

Non-Qualified)

VFR

S8016

XXXXX J

ST

H

L

Manufacturers

Identification

Number

Mfr. Code

B

Factory

07

Year

11

Week

Front View

Note

1. 0.200" (5.08 mm) lead spacing available - specify RNC90T for RNC90Y, and RNC90S for RNC90Z