WSL3637
Vishay Dale
Document Number: 30099
For technical questions contact: ww2bresistors@vishay.com
www.vishay.com
Revision: 11-Sep-04
1
Power Metal Strip
Resistors, Low Value, Surface Mount,
4-Terminal
FEATURES
4-Terminal design allows for 0.5% resistance tolerance
down to 0.003
Ideal for all types of current sensing, voltage division and
pulse applications including switching and linear power
supplies, instruments and power amplifiers
Proprietary processing technique produces extremely low
resistance values
All welded construction
Solid metal Nickel-chrome alloy resistive element
Solderable terminations
Enscapsulated with a high temperature coating
Very low inductance, .5
H to 5
H
Excellent frequency response
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
POWER RATING
P
70C
W
TOLERANCE
%
RESISTANCE RANGE
WSL3637
3.0
0.5 & 1.0
0.001 - 0.01
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
WSL3637
Temperature Coefficient
ppm/C
0.001
- 0.0299
= 75
0.003
- 0.010
= 50
Operating Temperature Range
C
- 65 / + 170
Maximum Working Voltage
V
(P x R)
1/2
Weight/1000 pcs
g
274.3
GLOBAL MODEL
VALUE
TOLERANCE
PACKAGING
SPECIAL
WSL3637
L = Miliohm
D =
0.5%
EA = Lead Free, tape/reel
(Dash Number)
R = Decimal
F =
1.0%
EK = Lead Free, Bulk
(up to 2 digits)
5L000 = 0.005
TA = Tin/Lead, tape/reel (R86)
From 1-99 as
R0100 = 0.01
BA = Tin/Lead, bulk (B43)
applicable
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: WSL36375L000FEA (preferred part numbering format)
W
S
L
3
6
3
7
5
L
0
0
0
F
E
A
Historical Part Number example: WSL3637 0.005
1%
EA (will continue to be accepted)
WSL3637
0.005
1%
EA
HISTORICAL MODEL
RESISTANCE VALUE
TOLERANCE CODE
PACKAGING
www.vishay.com
For technical questions contact: ww2bresistors@vishay.com
Document Number: 30099
2
Revision: 11-Sep-04
WSL3637
Vishay Dale
Power Metal Strip
Resistors, Low Value, Surface Mount,
4-Terminal
DIMENSIONS
Embossed carrier tape per EIA-481-2
MODEL
DIMENSIONS
in inches [millimeters]
RESISTANCE RANGE
L
W
H
T
A
B
WSL3637
0.002 - 0.01
0.370 0.010
[9.40 0.254]
0.360 0.010
[9.14 0.254]
0.025 0.010
[0.635 0.254]
0.086 0.010
[2.18 0.254]
0.061 0.010
[1.55 0.254]
0.032 0.010
[0.813 0.254]
0.001 - 0.0019
0.370 0.010
[9.40 0.254]
0.360 0.010
[9.14 0.254]
0.025 0.010
[0.635 0.254]
0.138 0.010
[3.51 0.254]
0.061 0.010
[1.55 0.254]
0.032 0.010
[0.813 0.254]
MODEL
SOLDER PAD DIMENSIONS
in inches [millimeters]
RESISTANCE RANGE
a
b
c
d
l
WSL3637
0.002 - 0.01
0.116 [2.95]
0.366 [9.30]
0.066 [1.68]
0.024 [0.610]
0.178 [4.52]
0.001 - 0.0019
0.168 [4.27]
0.366 [9.30]
0.066 [1.66]
0.024 [0.610]
0.074 [1.88]
PERFORMANCE
TEST
CONDITIONS OF TEST
TEST LIMITS
Thermal Shock
- 55C to + 150C, 1000 cycles, 15 minutes at each extreme
(0.5% + 0.0005
)
R
Short Time Overload
5 x Rated Power for 5 seconds
(0.5% + 0.0005
)
R
Low Temperature Storage
- 65C for 24 hours
(0.5% + 0.0005
)
R
High Temperature Exposure
1000 hours @ + 170C
(1.0% + 0.0005
)
R
Bias Humidity
+ 85C, 85% RH, 10% Bias, 1000 hours
(0.5% + 0.0005
)
R
Mechanical Shock
100g's for 6 milliseconds, 5 pulses
(0.5% + 0.0005
)
R
Vibration
Frequency varied 10 to 2000Hz in 1 minute, 3 directions, 12 hours
(0.5% + 0.0005
)
R
Load Life
1000 hours @ rated power, +70C, 1.5 hours "ON", 0.5 hours "OFF"
(1.0% + 0.0005
)
R
Solder Heat
+ 260C Solder, 10-12 second dwell, 25mm/second 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
PACKAGING
MODEL
REEL
TAPE WIDTH
DIAMETER
PIECES/REEL
CODE
WSL3637
16mm/Embossed Plastic
330mm/13"
4000
EA
A
c
B
L
W
T
H
I
d
b
a
-65
-55
-25
0
25
50
75
100
125
150
170
120
100
80
60
40
20
0
70
Derating
AMBIENT TEMPERATURE IN
C
RA
TED POWER IN %
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