WSHP2818 www.vishay.com Vishay Dale Power Metal Strip Resistors, High Power (10 W), Low Value (down to 0.001 ), 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) Low thermal EMF (< 3 V/C) click logo to get started DESIGN SUPPORT TOOLS Solid metal nickel-chrome or manganese-copper alloy resistive element with low TCR Models Design Tools (< 20 ppm/C) Available Available (1) AEC-Q200 qualified 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 STANDARD ELECTRICAL SPECIFICATIONS RESISTANCE VALUE RANGE POWER RATING WEIGHT GLOBAL MODEL SIZE P (typical) 70 C W g/1000 pieces Tol. 0.5 % Tol. 1.0 % (1) WSHP2818 2818 10 0.010 to 0.1 0.001 to 0.1 167.8 Note (1) The WSHP2818 is rated at 10 W with maximum surface temperature of 200 C based on 70 C ambient temperature GLOBAL PART NUMBER INFORMATION Global Part Numbering: WSHP2818R1000FEA (visit www.vishay.net Vishay Dale parts numbering manual for all options) W S H P 2 8 1 8 R 1 0 0 0 F E A (1) GLOBAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING CODE SPECIAL (8 digits) (5 digits) (1 digit) (2 digits) (up to 2 digits) WSHP2818 L = m * D = 0.5 % EA = lead (Pb)-free, tape/reel (dash number) R = decimal F = 1.0 % EK = lead (Pb)-free, bulk from 1 to 99 as 4L000 = 0.004 applicable R0100 = 0.01 * Use L for resistance values < 0.01 Note (1) EB (lead (Pb) free) is a non-standard packaging code designated for 1000 piece reels. The non-standard packaging code is identical to our standard EA (lead (Pb) free), except that it has 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: 18-Jun-2018 Document Number: 30347 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 WSHP2818 www.vishay.com Vishay Dale TECHNICAL SPECIFICATIONS PARAMETER UNIT RESISTOR CHARACTERISTICS (4) 200 for 1 m to 5.99 m (1) Component temperature coefficient (including terminal) ppm/C (4) 75 for 6 m to 100 m (2) Element TCR ppm/C < 20 Inductance nH < 5 Operating temperature range C -65 to +170 (3) 1/2 Maximum working voltage V(P x R) Notes (1) Component TCR - total TCR that includes the TCR effects of the resistor element and the copper terminal (2) Element TCR - only applies to the alloy used for the resistor element refer to item 1 in the construction illustration on the following page (3) Maximum working voltage - the WSHP is not voltage sensitive, but is limited by power / energy dissipation and is also not ESD sensitive (4) Typical TCR is positive, for more details contact factory DIMENSIONS in inches (millimeters) L H a T b l W a Notes 3D models available: www.vishay.com/doc 30349 Surface mount solder profile recommendations: www.vishay.com/doc 31052 RESISTANCE DIMENSIONS SOLDER PAD DIMENSIONS MODEL RANGE LW H T a b l 0.280 0.010 0.180 0.010 0.059 0.010 0.125 0.010 0.138 0.200 0.024 WSHP2818 0.001 to 0.1 (7.1 0.25) (4.6 0.25) (1.50 0.25) (3.18 0.25) (3.5) (5.1) (0.61) TYPICAL SENSING LAYOUT SENSING WITH VIA LAYOUT (best performance) a f a e a a c b b l l d c ab c l ab de f l 0.138 0.210 0.020 0.024 0.143 0.210 0.026 0.105 0.020 0.024 (3.51) (5.33) (0.51) (0.61) (3.63) (5.33) (0.66) (2.67) (0.50) (0.61) Note Sensing locations are based on the construction of the part terminals are wrapped from the outside to underneath. These options place the sensing location nearest the temperature stable resistance element, which minimizes contact resistance and optimizes TCR Revision: 18-Jun-2018 Document Number: 30347 2 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