ALSR, ALVR
www.vishay.com Vishay Huntington
Revision: 15-Mar-12 1Document Number: 31800
For technical questions, contact: ww2aresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Wirewound Resistors, Commercial Power,
Silicone Coated, Axial Lead
FEATURES
High temperature coating (> 350 °C)
All welded construction
Available with “vitreous like appearance”
coating as ALVR
Available in non-inductive styles with Ayrton-
Perry winding for lowest reactive components,
special “NI”
Material categorization:
For definitions of compliance please see
www.vishay.com/doc?99912
Notes
(1) Vishay Huntington ALSR/ALVR models have two power ratings depending on operation temperature and stability requirements. Models not
available for characteristic V are: ALSR01, ALVR01, ALSR03, and ALVR03
(2) Other tolerances may be available, contact factory
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
HISTORICAL
MODEL
POWER RATING (1)
P25 °C W
CHARACTERISTIC U + 250 °C
POWER RATING (1)
P25 °C W
CHARACTERISTIC V + 350 °C
RESISTANCE
RANGE
Ω
TOLERANCE (2)
%
WEIGHT
(typical)
g
ALSR01 ALSR-1 1 - 0.10 to 6.37K 1, 3, 5, 10 0.27
ALVR01 ALVR-1 1 - 0.10 to 6.37K 1, 3, 5, 10 0.27
ALSR03 ALSR-3 3 - 0.10 to 12K 1, 3, 5, 10 0.68
ALVR03 ALVR-3 3 - 0.10 to 12K 1, 3, 5, 10 0.68
ALSR5A ALSR-5A 4 5 0.10 to 40.3K 1, 3, 5, 10 2.1
ALVR5A ALVR-5A 4 5 0.10 to 40.3K 1, 3, 5, 10 2.1
ALSR05 ALSR-5 5 7 0.10 to 58.5K 1, 3, 5, 10 3.2
ALVR05 ALVR-5 5 7 0.10 to 58.5K 1, 3, 5, 10 3.2
ALSR10 ALSR-10 7 10 0.10 to 92K 1, 3, 5, 10 4.9
ALVR10 ALVR-10 7 10 0.10 to 92K 1, 3, 5, 10 4.9
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: ALSR0325R00FE12NI
GLOBAL MODEL
(6 digits)
VALUE
(5 digits)
TOLERANCE
(1 digit)
PACKAGING
(3 digits)
SPECIAL
(up to 2 digits)
(See Standard Electrical
Specifications Global
Model column for
options)
R = Decimal
K = Thousand
1R500 = 1.5 Ω
1K500 = 1.5 kΩ
F = ± 1.0 %
H = ± 3.0 %
J = ± 5.0 %
K = ± 10.0 %
E07 = Tape/reel
(ALSR5A/ALVR5A, ALSR05/ALVR05)
E08 = Tape/reel (ALSR01/ALVR01)
E29 = Tape/reel (ALSR10/ALVR10)
E48 = Tape/reel (ALSR03/ALVR03)
E12 = Bulk, 100 pc boxes
(Dash Number)
From 1 to 99
as applicable
NI = Non-inductive
Historical Part Number example: ALSR-3-25-1 %-NI
ALSR-3 25 Ω1 % NI
HISTORICAL MODEL RESISTANCE VALUE TOLERANCE SPECIAL
LSR0 325R0 0FE1A 2 N I
ALSR, ALVR
www.vishay.com Vishay Huntington
Revision: 15-Mar-12 2Document Number: 31800
For technical questions, contact: ww2aresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
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 0.406 [10.31] 0.110 [2.79] 0.020 [0.508]
ALVR01 0.406 [10.31] 0.110 [2.79] 0.020 [0.508]
ALSR03 0.500 [12.70] 0.180 [4.57] 0.032 [0.813]
ALVR03 0.500 [12.70] 0.180 [4.57] 0.032 [0.813]
ALSR5A 0.920 [23.37] 0.200 [5.08] 0.032 [0.813]
ALVR5A 0.920 [23.37] 0.200 [5.08] 0.032 [0.813]
ALSR05 0.875 [22.23] 0.312 [7.92] 0.032 [0.813]
ALVR05 0.875 [22.23] 0.312 [7.92] 0.032 [0.813]
ALSR10 1.730 [43.94] 0.312 [7.92] 0.032 [0.813]
ALVR10 1.730 [43.94] 0.312 [7.92] 0.032 [0.813]
1.50 [38.10]
min. LD
LD
RATED POWER IN %
AMBIENT TEMPERATURE IN °C
120
100
80
60
40
20
0
25
- 65
- 50 25010050 300 350
0 200150
Characteristic U
Characteristic V
TECHNICAL SPECIFICATIONS
PARAMETER UNIT RESISTOR CHARACTERISTICS
Temperature Coefficient ppm/°C ± 30 for 10 Ω and above; ± 50 for 1 Ω to 9.9 Ω; ± 90 for 0.5 Ω to 0.99 Ω
Terminal Strength lb 10 minimum
Dielectric Withstanding Voltage VAC 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 (P x R)1/2
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 Ω) > ΔR
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 Ω) > ΔR
Dielectric Withstanding
Voltage 500 VRMS, 1 min for 1 W and 1000 VRMS, 1 min for 3 W and above ± (0.1 % + 0.05 Ω) > ΔR
Low Temperature Storage - 65 °C for 24 h ± (2.0 % + 0.05 Ω) > ΔR
High Temperature Exposure 250 h at U = + 250 °C, V = + 350 °C ± (4.0 % + 0.05 Ω) > ΔR
Mechanical Shock MIL-STD-202 method 213, 100 g’s for 6 ms, 10 shocks ± (0.2 % + 0.05 Ω) > ΔR
Vibration Frequency varied 10 Hz to 2000 Hz, 20 g peak, 2 directions 6 h each ± (0.2 % + 0.05 Ω) > ΔR
Load Life 2000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF” ± (3.0 % + 0.05 Ω) > ΔR
Moisture Resistance MIL-STD-202 method 106, 7b not applicable ± (2.0 % + 0.05 Ω) > ΔR
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www.vishay.com Vishay
Revision: 12-Mar-12 1Document Number: 91000
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