SR
www.vishay.com Vishay Dale
Revision: 12-Dec-11 1Document Number: 31067
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, Open Air, Current Sense, Low Value
FEATURES
• Open air design
• Low resistance values for all types of current
sensing, voltage division and pulse
applications including switching and linear
supplies, instrumentation and power amplifiers
• All welded construction
• Solid metal nickel-chrome or copper-nickel
alloy resistive element
• Solderable terminations
• Very low inductance
• AEC-Q200 qualified available (1)
• Compliant to RoHS Directive 2002/95/EC
Note
(1) Flame retardance test may not be applicable to some resistor
technologies.
Notes
*Pb containing terminations are not RoHS compliant, exemptions may apply
** Please see document “Vishay Material Category Policy”: www.vishay.com/doc?99902
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
POWER RATING
P70 °C
W
RESISTANCE RANGE
TOLERANCE
± %
SR1 1.0 0.005 to 0.03 1, 5
SR3 3.0 0.005 to 0.05 1, 5
SR5 5.0 0.004 to 0.05 1, 5
TECHNICAL SPECIFICATIONS
PARAMETER UNIT SR RESISTOR CHARACTERISTICS
Temperature Coefficient ppm/°C
± 100 = 0.01 to 0.05 ;
± 175 = 0.0051 to 0.0099 ;
± 300 = 0.004 to 0.005
Operating Temperature Range °C - 65 to + 275
Maximum Continuous Current A (P/R)1/2
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: SR55L000JE14
GLOBAL MODEL VALUE TOLERANCE PACKAGING SPECIAL
SR1
SR3
SR5
L = m
(below 0.01 )
R = Decimal
5L000 = 0.005
R0100 = 0.01
F = ± 1.0 %
J = ± 5.0 %
K = ± 10 %
E14 =
Lead (Pb)-free bulk
B14 =
Tin/lead bulk
(Dash Number)
(up to 3 digits)
From 1 to 999 as
applicable
L000JE15S 5R 4
SR
www.vishay.com Vishay Dale
Revision: 12-Dec-11 2Document Number: 31067
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: Nickel-chrome or copper-nickel alloy depending
on resistance value
Terminals: Tinned copper
Encapsulation: None
Marking: None
DERATING
MODEL DIMENSIONS in inches [millimeters]
ABCEF
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
RATED POWER IN %
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
Document Number: 91000 www.vishay.com
Revision: 11-Mar-11 1
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