ALSR, ALVR

www.vishay.com

Vishay Huntington

Revision: 24-Feb-12

2

Document Number: 31800

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

DIMENSIONS in inches [millimeters]

MATERIAL SPECIFICATIONS

Element: Copper-nickel alloy or nickel-chrome alloy,

depending on resistance value

Core: Ceramic: Steatite or alumina, depending on physical

size

End Caps: Stainless steel

Coating: Special high temperature silicone or special

formula of “vitreous like appearance” coating on ALVR

Terminals: Tinned Copper clad steel

Part Marking: HEI, model, value, tolerance, date code

DERATING

GLOBAL MODEL

DIMENSIONS in inches [millimeters]

L

± 0.032 [0.813]

D

± 0.032 [0.813]

LD

± 0.002 [0.051]

ALSR01

0.385 [9.8]

0.110 [2.8]

0.020 [0.5]

ALVR01

0.437 [11.1]

0.125 [3.2]

0.020 [0.5]

ALSR03

0.530 [13.5]

0.200 [5.1]

0.032 [0.8]

ALVR03

0.563 [14.3]

0.218 [5.5]

0.032 [0.8]

ALSR5A

0.937 [23.8]

0.200 [5.1]

0.032 [0.8]

ALVR5A

1.031 [26.2]

0.218 [5.5]

0.032 [0.8]

ALSR05

0.937 [23.8]

0.312 [7.9]

0.032 [0.8]

ALVR05

1.031 [26.2]

0.343 [8.7]

0.032 [0.8]

ALSR10

1.800 [45.7]

0.312 [7.9]

0.032 [0.8]

ALVR10

1.843 [46.8]

0.343 [8.7]

0.032 [0.8]

1.50 [38.10]

min.

L

D

LD

AMBIENT TEMPERATURE IN °C

120

100

80

60

40

20

0

25

- 65

- 50

250

100

50

300

350

0

200

150

Characteristic U

Characteristic V

TECHNICAL SPECIFICATIONS

PARAMETER

UNIT

RESISTOR CHARACTERISTICS

Temperature Coefficient

ppm/°C

± 30 for 10

 and above; ± 50 for 1  to 9.9 ; ± 90 for 0.5  to 0.99 

Terminal Strength

lb

10 minimum

Dielectric Withstanding Voltage

500 for 1 W and 1000 for 3 W and above

Operating Temperature Range

°C

Characteristic U = - 65 to + 250, characteristic V = - 65 to + 350

Maximum Working Voltage

V

PERFORMANCE

TEST

CONDITIONS OF TEST

TEST LIMITS

(CHARACTERISTIC V)

Thermal Shock

Rated power applied until thermally stable, then a minimum of 15 min at - 55 °C

± (2.0 % + 0.05

) > R

Short Time Overload

5 x rated power (3 W and smaller), 10 x rated power (4 W and larger) for 5 s

± (2.0 % + 0.05

) > R

Dielectric Withstanding

Voltage

± (0.1 % + 0.05

) > R

Low Temperature Storage

- 65 °C for 24 h

± (2.0 % + 0.05

) > R

High Temperature Exposure

250 h at U = + 250 °C, V = + 350 °C

± (4.0 % + 0.05

) > R

Mechanical Shock

MIL-STD-202 method 213, 100 g’s for 6 ms, 10 shocks

± (0.2 % + 0.05

) > R

Vibration

Frequency varied 10 Hz to 2000 Hz, 20 g peak, 2 directions 6 h each

± (0.2 % + 0.05

) > R

Load Life

2000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF”

± (3.0 % + 0.05

) > R

Moisture Resistance

MIL-STD-202 method 106, 7b not applicable

± (2.0 % + 0.05

) > R