SR
www.vishay.com
Vishay Dale
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
SR1
SR3
SR5
POWER RATING
P
70 °C
W
1.0
3.0
5.0
RESISTANCE RANGE
0.005 to 0.03
0.005 to 0.05
0.004 to 0.05
TOLERANCE
±%
1, 5
1, 5
1, 5
TECHNICAL SPECIFICATIONS
PARAMETER
Temperature Coefficient
Operating Temperature Range
Maximum Continuous Current
UNIT
ppm/°C
°C
A
SR RESISTOR CHARACTERISTICS
± 100 = 0.01
to 0.05
;
± 175 = 0.0051
to 0.0099
;
± 300 = 0.004
to 0.005
- 65 to + 275
(P/R)
1/2
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: SR55L000JE14
S
R
5
5
L
0
0
0
J
E
1
4
GLOBAL MODEL
SR1
SR3
SR5
VALUE
L
= m
(below 0.01
)
R
= Decimal
5L000
= 0.005
R0100
= 0.01
TOLERANCE
F
= ± 1.0 %
J
= ± 5.0 %
K
= ± 10 %
PACKAGING
E14
=
Lead (Pb)-free bulk
B14
=
Tin/lead bulk
SPECIAL
(Dash Number)
(up to 3 digits)
From
1 to 999
as
applicable
Revision: 12-Dec-11
Document Number: 31067
1
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
SR
www.vishay.com
DIMENSIONS
in inches [millimeters]
SR1
SR3 and SR5
Vishay Dale
0.050 ± 0.010
[1.27 ± 0.254]
0.312
[7.95]
typ.
C
F
A
E
A
B
0.112
[2.85]
max.
C
E
F
MODEL
SR1
DIMENSIONS
in inches [millimeters]
A
0.450 + 0.020
[11.43 + 0.508]
0.600 + 0.040/- 0.020
[15.24 + 1.020/- 0.508]
0.800 + 0.040/- 0.020
[20.32 + 1.020/- 0.508]
B
-
0.125 ± 0.030
[3.18 ± 0.762]
C
E
0.070
[1.78]
0.040 ± 0.002
[1.02 ± 0.051]
F
SR3
1.0 maximum
[25.4 maximum]
0.065 + 0.010/- 0.005
[1.65 + 0.254/- 0.127]
SR5
MATERIAL SPECIFICATIONS
Element:
Nickel-chrome or copper-nickel alloy depending
on resistance value
Terminals:
Tinned copper
Encapsulation:
None
Marking:
None
DERATING
RATED POWER IN %
120
100
80
60
40
20
0
- 65
- 25
25
125
175
225
275
75
70
AMBIENT TEMPERATURE IN °C
PERFORMANCE
TEST
Temperature Cycling
Low Temperature Storage
High Temperature Exposure
Bias Humidity
Mechanical Shock
Vibration
Load Life
Resistance to Solder Heat
Moisture Resistance
CONDITIONS OF TEST
- 55 °C to + 125 °C, 1000 cycles, 15 min at each extreme
- 65 °C for 24 h
1000 h at + 275 °C
+ 85 °C, 85 % RH, 10 % bias, 1000 h
100
g’s
for 11 ms, 5 pulses
Frequency varied 10 Hz to 2000 Hz in 1 min, 3 directions, 12 h
1000 h at rated power, + 70 °C, 1.5 h “ON”, 0.5 h “OFF”
+ 260 °C solder, 10 s to 12 s dwell, 25 mm/s emergence
MIL-STD-202 method 106, 0 % power, 7a and 7b not required
TEST LIMITS
± (1.0 % + 0.0005
) R
± (0.5 % + 0.0005
) R
± (2.0 % + 0.0005
) R
± (1.0 % + 0.0005
) R
± (0.2 % + 0.0005
) R
± (0.2 % + 0.0005
) R
± (2.0 % + 0.0005
) R
± (0.5 % + 0.0005
) R
± (0.5 % + 0.0005
) R
Revision: 12-Dec-11
Document Number: 31067
2
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
Legal Disclaimer Notice
Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
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“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
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Document Number: 91000
Revision: 11-Mar-11
www.vishay.com
1
