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Vishay Intertechnology Electronic Components Datasheet

WSH2818 Datasheet

Power Metal Strip Resistors

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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


Vishay Intertechnology Electronic Components Datasheet

WSH2818 Datasheet

Power Metal Strip Resistors

No Preview Available !

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


Part Number WSH2818
Description Power Metal Strip Resistors
Maker Vishay
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WSH2818 Datasheet PDF






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