VISHAY WSR21R000FTA

WSR
www.vishay.com
Vishay Dale
Power Metal Strip® Resistors,
Low Value (down to 0.001 ), Surface Mount
FEATURES
• Molded high temperature encapsulation
• Ideal for all types of current sensing, voltage
division and pulse applications including
switching and linear power supplies,
instruments, power amplifiers
• Proprietary processing technique produces
extremely low resistance values (down to
0.001 )
• All welded construction
• Solid metal nickel-chrome or manganesecopper alloy resistive element with low TCR
(< 20 ppm/°C)
• Solderable terminations
• Very low inductance 0.5 nH to 5 nH
• Excellent frequency response to 50 MHz
• Low thermal EMF (< 3 μV/°C)
• AEC-Q200 qualified (1)
• Material categorization: For definitions of compliance
please see www.vishay.com/doc?99912
Notes
* Lead (Pb)-containing terminations are not RoHS-compliant.
Exemptions may apply.
(1) Flame retardance test may not be applicable to some resistor
technologies.
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
SIZE
WSR2
WSR3
4527
4527
RESISTANCE VALUE RANGE

Tol. ± 0.5 %
Tol. ± 1.0 %
0.005 to 1.0
0.001 to 1.0
0.005 to 0.2
0.001 to 0.2
POWER RATING
P70 °C
W
2.0
3.0 (2)
WEIGHT
(typical)
g/1000 pieces
440
440
Notes
• Part marking: DALE, model, value, tolerance, date code.
(2) The WSR3 requires a minimum of 1050 sq. mil. circuit traces connecting to the recommended solder pad.
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
Temperature coefficient
ppm/°C
Element TCR
Dielectric withstanding voltage
Insulation resistance
Operating temperature range
Maximum working voltage
ppm/°C
VAC

°C
V
WSR2 AND WSR3 RESISTOR CHARACTERISTICS
± 75 for 0.010  to 1.0 ; ± 110 for 0.005  to 0.0099 ;
± 300 for 0.004  to 0.0049 ± 450 for 0.003  to 0.0039 ;
± 600 for 0.002  to 0.0029 ; ± 750 for 0.001  to 0.0019 
< 20
> 500
> 109
- 65 to + 275
(P x R)1/2
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: WSR25L000FEA
W
S
R
2
5
L
0
0
0
F
E
A
GLOBAL MODEL
VALUE
TOLERANCE CODE
PACKAGING CODE
SPECIAL
WSR2
WSR3
L = m*
R = Decimal
5L000 = 0.005 
R0100 = 0.01 
* Use “L” for resistance
values < 0.01 
D = ± 0.5 %
F = ± 1.0 %
J = ± 5.0 %
EA = Lead (Pb)-free, tape/reel
EK = Lead (Pb)-free, bulk
(Dash number)
(Up to 2 digits)
From 1 to 99 as
applicable
TA = Tin/lead, tape/reel (R86)
BA = Tin/lead, bulk (B43)
Historical Part Numbering example: WSR2 0.005  1 % EA
WSR2
0.005 
1%
EA
HISTORICAL MODEL
RESISTANCE VALUE
TOLERANCE CODE
PACKAGING CODE
Revision: 17-Jan-13
Document Number: 30101
1
For technical questions, contact: [email protected]
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
WSR
www.vishay.com
Vishay Dale
DIMENSIONS
DIMENSIONS in inches (millimeters)
MODEL
L
H
W
WSR2
WSR3
W1
H
T
W
W1
0.455 ± 0.032 0.095 ± 0.005 0.100 ± 0.010 0.275 ± 0.005 0.215 ± 0.005
(11.56 ± 0.813) (2.41 ± 0.127) (2.54 ± 0.254) (6.98 ± 0.127) (5.46 ± 0.127)
T
L
I
SOLDER PAD DIMENSIONS in inches (millimeters)
MODEL
b
WSR2
WSR3
a
a
b
l
0.155
(3.94)
0.230
(5.84)
0.205
(5.21)
Rated Power in %
DERATING
120
100
80
60
40
20
0
- 65
- 25
25
75
125
70
175
225
275
Ambient Temperature °C
PERFORMANCE
TEST
TEST LIMITS
CONDITIONS OF TEST
WSR2
WSR3
Thermal shock
- 55 °C to + 150 °C, 1000 cycles, 15 min at each extreme
± (0.5 % + 0.0005 ) R ± (0.5 % + 0.0005 ) R
Short time overload
WSR2: 5 x rated power for 5 s
WSR3: 4 x rated power for 5 s
± (0.5 % + 0.0005 ) R ± (2.0 % + 0.0005 ) R
Low temperature storage
- 65 °C for 24 h
± (0.5 % + 0.0005 ) R ± (0.5 % + 0.0005 ) R
High temperature
exposure
1000 h at + 275 °C
± (1.0 % + 0.0005 ) R ± (1.0 % + 0.0005 ) R
Bias humidity
+ 85 °C, 85 % RH, 10 % bias, 1000 h
± (0.5 % + 0.0005 ) R ± (0.5 % + 0.0005 ) R
Mechanical shock
100 g’s for 6 ms, 5 pulses
± (0.5 % + 0.0005 ) R ± (0.5 % + 0.0005 ) R
Vibration
Frequency varied 10 Hz to 2000 Hz in 1 min, 3 directions, 12 h ± (0.5 % + 0.0005 ) R ± (0.5 % + 0.0005 ) R
Load life
1000 h at rated power, + 70 °C, 1.5 h “ON”, 0.5 h “OFF”
± (1.0 % + 0.0005 ) R ± (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 ± (0.5 % + 0.0005 ) R
Moisture resistance
MIL-STD-202, method 106, 0 % power, 7a and 7b not
required
± (0.5 % + 0.0005 ) R ± (0.5 % + 0.0005 ) R
PACKAGING
MODEL
WSR2 and WSR3
REEL
TAPE WIDTH
DIAMETER
PIECES/REEL
CODE
24 mm/embossed plastic
330 mm/13"
1500
EA
Note
• Embossed Carrier Tape per EIA-481.
Revision: 17-Jan-13
Document Number: 30101
2
For technical questions, contact: [email protected]
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
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www.vishay.com
Vishay
Disclaimer
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Material Category Policy
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the
definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council
of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment
(EEE) - recast, unless otherwise specified as non-compliant.
Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free
requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference
to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21
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Revision: 02-Oct-12
1
Document Number: 91000