SR

www.vishay.com

Vishay Dale

Revision: 12-Dec-11

2

Document Number: 31067

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

DIMENSIONS in inches [millimeters]

MATERIAL SPECIFICATIONS

Element: Nickel-chrome or copper-nickel alloy depending

on resistance value

Terminals: Tinned copper

Encapsulation: None

Marking: None

DERATING

MODEL

DIMENSIONS in inches [millimeters]

AB

CE

F

SR1

0.450 + 0.020

[11.43 + 0.508]

-

0.125 ± 0.030

[3.18 ± 0.762]

0.070

[1.78]

0.040 ± 0.002

[1.02 ± 0.051]

SR3

0.600 + 0.040/- 0.020

[15.24 + 1.020/- 0.508]

1.0 maximum

[25.4 maximum]

0.065 + 0.010/- 0.005

[1.65 + 0.254/- 0.127]

SR5

0.800 + 0.040/- 0.020

[20.32 + 1.020/- 0.508]

F

E

E

F

A

C

B

A

C

SR1

SR3 and SR5

0.112

[2.85]

max.

0.050 ± 0.010

[1.27 ± 0.254]

0.312

[7.95]

typ.

- 65

- 25

25

75

125

175

225

275

AMBIENT TEMPERATURE IN °C

0

20

40

60

80

100

120

70

PERFORMANCE

TEST

CONDITIONS OF TEST

TEST LIMITS

Temperature Cycling

- 55 °C to + 125 °C, 1000 cycles, 15 min at each extreme

± (1.0 % + 0.0005

) R

Low Temperature Storage

- 65 °C for 24 h

± (0.5 % + 0.0005

) R

High Temperature Exposure

1000 h at + 275 °C

± (2.0 % + 0.0005

) R

Bias Humidity

+ 85 °C, 85 % RH, 10 % bias, 1000 h

± (1.0 % + 0.0005

) R

Mechanical Shock

100 g’s for 11 ms, 5 pulses

± (0.2 % + 0.0005

) R

Vibration

Frequency varied 10 Hz to 2000 Hz in 1 min, 3 directions, 12 h

± (0.2 % + 0.0005

) R

Load Life

1000 h at rated power, + 70 °C, 1.5 h “ON”, 0.5 h “OFF”

± (2.0 % + 0.0005

) R

Resistance to Solder Heat

+ 260 °C solder, 10 s to 12 s dwell, 25 mm/s emergence

± (0.5 % + 0.0005

) R

Moisture Resistance

MIL-STD-202 method 106, 0 % power, 7a and 7b not required

± (0.5 % + 0.0005

) R