WSL3637
Vishay Dale
Power Metal Strip® Resistors, Low Value (down to 0.001 Ω), Surface Mount, 4-Terminal
FEATURES
• 4-Terminal design allows for 0.5 % resistance tolerance down to 0.003 Ω Pb-free Available • Ideal for all types of current sensing, voltage division and pulse applications including e3 switching and linear power supplies, instruments and power amplifiers • Proprietary processing technique produces RoHS* extremely low resistance values (down to COMPLIANT 0.001 Ω) • All welded construction • Solid metal Nickel-Chrome alloy resistive element with low TCR ( < 20 ppm/°C) • Solderable terminations • Low thermal EMF (< 3 µV/°C) • Very low inductance, 0.5 nH to 5 nH • Excellent frequency response to 50 MHz • Lead (Pb)-free version is RoHS compliant
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL MODEL WSL3637 POWER RATING P70 °C W 3.0 TOLERANCE % 0.5 and 1.0 RESISTANCE RANGE
Ω
0.001 - 0.01
TECHNICAL SPECIFICATIONS
PARAMETER Temperature Coefficient Operating Temperature Range Maximum Working Voltage Weight/1000 pieces UNIT ppm/°C °C V g WSL3637 0.001 Ω - 0.0029 Ω = ± 75 0.003 Ω - 0.010 Ω = ± 50 - 65 to + 170 (P x R)1/2 274.3
GLOBAL PART NUMBER INFORMATION
NEW GLOBAL PART NUMBERING: WSL36375L000FTA (PREFERRED PART NUMBERING FORMAT)
W
GLOBAL MODEL WSL3637
S
L
3
6
3
7
5
L
0
0
0
F
T
A
SPECIAL (Dash Number) (up to 2 digits) From 1 - 99 as applicable
VALUE L = mΩ* R = Decimal 5L000 = 0.005 Ω R0100 = 0.01 Ω * use ”L” for resistance values < 0.01 Ω
TOLERANCE D = ± 0.5 % F = ± 1.0 %
PACKAGING EA = Lead (Pb)-free, tape/reel EK = Lead (Pb)-free, bulk TA = Tin/lead, tape/reel (R86) BA = Ti n/lead, bulk (B43)
HISTORICAL PART NUMBER EXAMPLE: WSL3637 0.005 Ω 1 % R86 (WILL CONTINUE TO BE ACCEPTED)
WSL3637
HISTORICAL MODEL
0.005 Ω
RESISTANCE VALUE
1%
TOLERANCE CODE
R86
PACKAGING
* Pb containing terminations are not RoHS compliant, exemptions may apply www.vishay.com 22 For technical questions, contact: ww2bresistors@vishay.com Document Number: 30099 Revision: 26-Mar-07
WSL3637
Power Metal Strip® Resistors, Low Value (down to 0.001 Ω), Surface Mount, 4-Terminal
DIMENSIONS
H A L B T W
Vishay Dale
I d a b
c
DIMENSIONS in inches [millimeters] MODEL RESISTANCE RANGE
Ω
W 0.370 ± 0.010 [9.40 ± 0.254] 0.370 ± 0.010 [9.40 ± 0.254]
L 0.360 ± 0.010 [9.14 ± 0.254] 0.360 ± 0.010 [9.14 ± 0.254]
H 0.025 ± 0.010 [0.635 ± 0.254] 0.025 ± 0.010 [0.635 ± 0.254]
T 0.086 ± 0.010 [2.18 ± 0.254] 0.138 ± 0.010 [3.51 ± 0.254]
A 0.061 ± 0.010 [1.55 ± 0.254] 0.061 ± 0.010 [1.55 ± 0.254]
B 0.032 ± 0.010 [0.813 ± 0.254] 0.032 ± 0.010 [0.813 ± 0.254]
0.002 - 0.01 WSL3637 0.001 - 0.0019
SOLDER PAD DIMENSIONS in inches [millimeters] MODEL RESISTANCE RANGE
Ω
a 0.116 [2.95] 0.168 [4.27]
b 0.390 [9.91] 0.390 [9.91]
c 0.066 [1.68] 0.066 [1.66]
d 0.024 [0.610] 0.024 [0.610]
l 0.178 [4.52] 0.074 [1.88]
WSL3637
0.002 - 0.01 0.001 - 0.0019
Rated Power in %
120 100 80 60 40 20 0 - 65 - 55
- 25
0
25
50
Derating
75 100 125 150 170 70 Ambient Temperature in °C
PERFORMANCE
TEST Thermal Shock Short Time Overload Low Temperature Storage High Temperature Exposure Bias Humidity Mechanical Shock Vibration Load Life Solder Heat Moisture Resistance CONDITIONS OF TEST - 55 °C to + 150 °C, 1000 cycles, 15 min at each extreme 5 x Rated Power for 5 s - 65 °C for 24 h 1000 h at + 170 °C + 85 °C, 85 % RH, 10 % Bias, 1000 h 100 g’s for 6 ms, 5 pulses Frequency varied 10 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 - 12 s dwell, 25 mm/s emergence MIL-STD-202, Method 106, 0 % power, 7a and 7b not required TEST LIMITS ± (0.5 % + 0.0005 Ω) ΔR ± (0.5 % + 0.0005 Ω) ΔR ± (0.5 % + 0.0005 Ω) ΔR ± (1.0 % + 0.0005 Ω) ΔR ± (0.5 % + 0.0005 Ω) ΔR ± (0.5 % + 0.0005 Ω) ΔR ± (0.5 % + 0.0005 Ω) ΔR ± (1.0 % + 0.0005 Ω) ΔR ± (0.5 % + 0.0005 Ω) ΔR ± (0.5 % + 0.0005 Ω) ΔR
PACKAGING
MODEL WSL3637 REEL TAPE WIDTH 16 mm/Embossed Plastic DIAMETER 330 mm/13" PIECES/REEL 4000 CODE EA
Note • Embossed carrier tape per EIA-481-2 Document Number: 30099 Revision: 26-Mar-07 For technical questions, contact: ww2bresistors@vishay.com www.vishay.com 23
Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice. 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 herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000 Revision: 18-Jul-08
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