WSHM2818
www.vishay.com
Vishay Dale
Power Metal Strip® Resistors, High Power (7 W),
Low Value (Down to 0.001 Ω), Surface Mount
FEATURES
• Improved thermal management incorporated
into design
• All welded construction of the Power Metal
Strip resistors are ideal for all types of current
sensing, voltage division, and pulse
applications
• Proprietary processing technique produces
extremely low resistance values
• Sulfur resistance by construction that is
unaffected by high sulfur environments
• Very low inductance (< 5 nH)
• Solid metal nickel-chrome or manganesecopper alloy resistive element with low TCR (< 20 ppm/°C)
• Low thermal EMF (< 3 μV/°C)
• AEC-Q200 qualified (1)
• PATENT(S): www.vishay.com/patents
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
LINKS TO ADDITIONAL RESOURCES
3D 3D
Design Tools
3D Models
Videos
Note
(1) Flame retardance test may not be applicable to some resistor technologies
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL MODEL
POWER RATING
P70 °C
W
SIZE
WSHM2818
2818
WSHM2818
2818
7
(1)
6
RESISTANCE VALUE RANGE
Ω
TOL. ± 0.5 %
TOL ± 1.0 %
WEIGHT
(typical)
g/1000 pieces
0.010 to 0.1
0.001 to 0.1
167.8
0.101 to 0.2
0.101 to 0.2
167.8
Notes
• Qualified to AEC-Q200 rev. D
(1) The WSHM2818 is rated at 7 W with maximum surface temperature of 180 °C
GLOBAL PART NUMBER INFORMATION
Global Part Numbering: WSHM2818R1000FEA (visit www.vishay.net Vishay Dale parts numbering manual for all options)
W
S
H
GLOBAL MODEL
WSHM2818
M
2
8
RESISTANCE
VALUE
L = mΩ*
R = decimal
4L000 = 0.004 Ω
R0100 = 0.01 Ω
1
8
R
1
0
0
0
F
E
A
TOLERANCE CODE
PACKAGING CODE (1)
SPECIAL
D = ± 0.5 %
F = ± 1.0 %
EA = lead (Pb)-free, tape / reel
(dash number)
(up to 2 digits)
from 1 to 99 as
applicable
* Use “L” for resistance
values < 0.01 Ω
Notes
• SMD Power Metal Strip Marking (www.vishay.com/doc?30327)
(1) Packaging code: EB (lead (Pb)-free) and TB (tin / lead) are non-standard packaging codes designating 1000 piece reels. These non-standard
packaging codes are identical to our standard EA (lead (Pb)-free) and TA (tin / lead), except that they have a package quantity of 1000 pieces
PATENT(S): www.vishay.com/patents
This Vishay product is protected by one or more United States and international patents.
Revision: 13-Oct-2023
Document Number: 30188
1
For technical questions, contact: ww2bresistors@vishay.com
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
WSHM2818
www.vishay.com
Vishay Dale
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
RESISTOR CHARACTERISTICS
± 250 (4) for 1 mΩ to 1.99 mΩ
Component temperature coefficient (including terminal)
(1)
± 200 (4) for 2 mΩ to 5.99 mΩ
ppm/°C
± 75 (4) for 6 mΩ to 200 mΩ
Element TCR
(2)
ppm/°C
< 20
Inductance
nH
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