WSHM2818
www.vishay.com Vishay Dale
Revision: 18-Jun-2018 1Document Number: 30188
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
Power Metal Strip® Resistors, High Power (7 W),
Low Value (down to 0.001 ), Surface Mount
DESIGN SUPPORT TOOLS
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 manganese-
copper 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
Notes
• Follow link to Overview of Automotive Grade Products for more details: www.vishay.com/doc?49924
(1) Flame retardance test may not be applicable to some resistor technologies
Note
(1) The WSHM2818 is rated at 7 W with maximum surface temperature of 180 °C
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.
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STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL MODEL SIZE
POWER RATING
P70 °C
W
RESISTANCE VALUE RANGE
WEIGHT
(typical)
g/1000 pieces
Tol. ± 0.5 % Tol. ± 1.0 %
WSHM2818 2818 7 (1) 0.010 to 0.1 0.001 to 0.1 167.8
WSHM2818 2818 6 0.101 to 0.2 0.101 to 0.2 167.8
GLOBAL PART NUMBER INFORMATION
Global Part Numbering: WSHM2818R1000FEA (visit www.vishay.net Vishay Dale parts numbering manual for all options)
GLOBAL MODEL RESISTANCE
VALUE TOLERANCE CODE PACKAGING CODE (1) SPECIAL
WSHM2818 L = m*
R = decimal
4L000 = 0.004
R0100 = 0.01
* Use “L” for resistance
values < 0.01
D = ± 0.5 %
F = ± 1.0 %
EA = lead (Pb)-free, tape/reel
EK = lead (Pb)-free, bulk
(dash number)
(up to 2 digits)
from 1 to 99 as
applicable
W S H M 2 8 1 8 R 1 0 0 0 F E A