Resistors. WSH2818 Datasheet

WSH2818 Datasheet PDF


WSH2818
WSH2818
Vishay Dale
Power Metal Strip® Resistors, High Power (5 watt)
Low Value (down to 0.001 Ω), Surface Mount
FEATURES
Improved thermal management incorporated
into design
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
Pb-free
e3
RoHS
COMPLIANT
All welded construction
Solid metal Nickel-chrome or Manganese-copper alloy
resistive element with low TCR (< 20 ppm/°C)
Lead (Pb)-free construction
Very low inductance (< 5 nH)
Excellent frequency response to 50 MHz
Low thermal EMF (< 3 µV/°C)
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
POWER RATING
P70 °C
W
WSH2818
5*
TOLERANCE
%
1.0
* The WSH2818 is rated at 5 watts with maximum surface temperature of 200 °C
TECHNICAL SPECIFICATIONS
PARAMETER
Temperature Coefficient
Inductance
Operating Temperature Range
Maximum Continuous Current
Weight/1000 pieces
UNIT
ppm/°C
ηH
°C
A
g
RESISTANCE RANGE
Ω
0.001 - 0.1
WSH2818
± 200 for 1 mΩ to 5.99 mΩ
± 75 for 6 mΩ to 100 mΩ
<5
- 65/+ 170
(P/R)1/2
126
GLOBAL PART NUMBER INFORMATION
Global Part Numbering: WSH2818R1000FEA
W SH28 18 R1 000 F EA
GLOBAL MODEL
WSH2818
RESISTANCE VALUE
L = Milliohm*
R = Decimal
4L000 = 0.004 Ω
R0100 = 0.01 Ω
* use “L” for resistance
values < 0.01 Ω
TOLERANCE CODE
F = ± 1.0 %
J = ± 5.0 %
PACKING CODE
EA = Lead (Pb)-free, Tape/Reel
EK = Lead (Pb)-free, Bulk
SPECIAL
(Dash number up to
2 digits)
From 1 - 99
as applicable
www.vishay.com
200
For technical questions contact: ww2bresistors@vishay.com
Document Number: 30120
Revision: 20-Apr-06


Part WSH2818
Description Power Metal Strip Resistors
Feature WSH2818; WSH2818 Vishay Dale Power Metal Strip® Resistors, High Power (5 watt) Low Value (down to 0.001 Ω), .
Manufacture Vishay
Datasheet
Download WSH2818 Datasheet

WSH2818 Vishay Dale Power Metal Strip® Resistors, High Powe WSH2818 Datasheet





WSH2818
Power Metal Strip® Resistors, High Power (5 watt)
Low Value (down to 0.001 Ω), Surface Mount
WSH2818
Vishay Dale
DIMENSIONS
L
W
H
T
DIMENSIONS in inches [millimeters]
MODEL RESISTANCE
RANGE
Ω
L
WH
T
0.280 ± 0.010 0.180 ± 0.010 0.032 ± 0.010 0.125 ± 0.010
0.006 - 0.1 [7.1 ± 0.25] [4.6 ± 0.25] [0.813 ± 0.25] [3.18 ± 0.25]
WSH2818
0.280 ± 0.010 0.180 ± 0.010 0.045 ± 0.010 0.125 ± 0.010
0.001 - 0.0059 [7.1 ± 0.25] [4.6 ± 0.25] [1.143 ± 0.25] [3.18 ± 0.25]
a
bc
a
MODEL
WSH2818
SOLDER PAD DIMENSIONS in inches [millimeters]
ab
C
0.138
[3.5]
0.200
[5.1]
0.024
[0.61]
120
100
80
60
40
20
0- 65 - 50 - 25
DERATING
0 25
50 75 100 125 150 170
AMBIENT TEMPERATURE IN °C
70
PERFORMANCE
TEST
Thermal Shock
Short Time Overload
Low Temperature Operation
High Temperature Exposure
Bias Humidity
Mechanical Shock
Vibration
Load Life
Resistance to Solder Heat
Moisture Resistance
CONDITIONS OF TEST
- 55 °C to + 150 °C, 1000 cycles, 15 minutes at each extreme
4 x rated power for 5 seconds
- 65 °C for 45 minutes
1000 hours at + 170 °C
+ 85 °C, 85 % RH, 10 % Bias, 1000 hours
100 g’s for 6 milliseconds, 5 pulses
Frequency varied 10 to 2000 Hz in one minute, 3 directions, 12 hours
1000 hours at + 70 °C, 1.5 hours “ON”, 0.5 hours “OFF”
+ 260 °C Solder, 10 - 12 second dwell, 25 mm/second emergence
MIL-STD-202, Method 106, 0 % power, 7b not required
TEST LIMITS
± 0.5 % ΔR
± 1.0 % ΔR
± 0.5 % ΔR
± 1.0 % ΔR
± 0.5 % ΔR
± 0.5 % ΔR
± 0.5 % ΔR
± 1.0 % ΔR
± 0.5 % ΔR
± 0.5 % ΔR
PACKING
MODEL
TAPE WIDTH
WSH2818
16 mm/Embossed Plastic
Embossed carrier tape per EIA-481-2
DIAMETER
330 mm/13"
REEL
PIECES/REEL
3500
CODE
EA
Document Number: 30120
Revision: 20-Apr-06
For technical questions contact: ww2bresistors@vishay.com
www.vishay.com
201



WSH2818
Notice
Legal Disclaimer Notice
Vishay
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's
terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express
or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness
for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify Vishay for any damages resulting from such improper use or sale.
Document Number: 91000
Revision: 08-Apr-05
www.vishay.com
1






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