WSMS2906 www.vishay.com Vishay Dale Power Metal Strip Meter Shunt Resistor Very Low Value (down to 0.0003 ) FEATURES High power to resistor size ratio 5-terminal connection design Use for single or multi-phase energy meters Proprietary processing technique produces extremely low resistance values All welded construction Very low inductance (< 5 nH) Low thermal EMF (< 3 V/C) Compliant to RoHS Directive 2002/95/EC Note ** Please see document Vishay Material Category Policy: www.vishay.com/doc 99902 STANDARD ELECTRICAL SPECIFICATIONS POWER RATING RESISTANCE VALUE RESISTANCE VALUES WEIGHT GLOBAL TOLERANCE (1) SIZE P RANGE CURRENTLY AVAILABLE (typical) 70 C MODEL % W g/1000 pieces WSMS2906 2906 3.0 5.0 300 to 660 300, 400, 500 4.7 Note (1) Other values may be available, contact factory TECHNICAL SPECIFICATIONS PARAMETER UNIT RESISTOR CHARACTERISTICS 100 for 300 and 400 , Temperature Coefficient ppm/C 75 for 500 Operating Temperature Range C - 65 to + 170 1/2 Maximum Current Rating A (P/R) GLOBAL PART NUMBER INFORMATION GLOBAL PART NUMBERING EXAMPLE: WSMS2906L4000JK (WSMS2906, 0.0004 , 5 %) W S M S 2 9 0 6 L 4 0 0 0 J K GLOBAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING CODE SPECIAL WSMS2906 L = m J = 5.0 % K = Bulk pack (Dash number) L3000 = 0.00030 (Up to 2 digits) L4000 = 0.00040 From 1 to 99 as L5000 = 0.00050 applicable Revision: 21-Nov-11 Document Number: 30181 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 WSMS2906 www.vishay.com Vishay Dale DIMENSIONS in inches (millimeters) 1.142 0.010 (29 0.25) 0.051 (1.3) 0.827 (21) 0.748 0.010 (19 0.25) 0.551 (14) 0.165 (4.2) Dia. 0.295 0.010 (7.5 0.25) 0.305 (7.75) 0.059 (1.5) 0.059 (1.5) 0.059 (1.5) 0.118 (3) 0.541 (13.75) DERATING 120 TOLERANCES ON DECIMALS XXX 0.005 100 80 RESISTANCE ELEMENT 60 VALUE MATERIAL ( ) 40 300, 400, 500 Mn-Cu 20 0 - 65- 50 - 25 0 25 50 75 100 125 150 175 Ambient Temperature in C 70 PERFORMANCE TEST CONDITIONS OF TEST TEST LIMITS Thermal Shock - 55 C to + 150 C, 1000 cycles, 15 min at each extreme 0.5 % R Short Time Overload 5 x rated power for 5 s 0.5 % R Low Temperature Operation - 65 C for 45 min 0.5 % R High Temperature Exposure 1000 h at + 170 C 1.0 % R Bias Humidity + 85 C, 85 % RH, 10 % bias, 1000 h 0.5 % R Mechanical Shock 100 gs for 6 ms, 5 pulses 0.5 % R Vibration Frequency varied 10 Hz to 2000 Hz in 1 min, 3 directions, 12 h 0.5 % R Load Life 1000 h at + 70 C, 1.5 h ON, 0.5 h OFF 1.0 % R Moisture Resistance MIL-STD-202, method 106, 0 % power, 7b not required 0.5 % R Revision: 21-Nov-11 Document Number: 30181 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 Rated Power in %