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.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical
requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements
about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular
product with the properties described in the product specification is suitable for use in a particular application. Parameters
provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All
operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk and agree
to fully indemnify and hold Vishay and its distributors harmless from and against any and all claims, liabilities, expenses and
damages arising or resulting in connection with such use or sale, including attorneys fees, even if such claim alleges that Vishay
or its distributor was negligent regarding the design or manufacture of the part. Please contact authorized Vishay personnel to
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any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000
Revision: 11-Mar-11
www.vishay.com
1
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