WK/WR www.vishay.com Vishay Draloric High Power Metal Oxide Leaded Resistors FEATURES Rugged metal oxide film High power dissipation in small size (1 W/0207 size to 4 W/0922 size) WK2 is AEC-Q200 qualified High temperature coating (up to 200 C), non-flammable Lead (Pb)-free solder contacts Pure tin plating provides compatibility with lead (Pb)-free and lead containing soldering processes Material categorization: for definitions of compliance please see www.vishay.com/doc 99912 STANDARD ELECTRICAL SPECIFICATIONS RATED DISSIPATION LIMITING ELEMENT TEMPERATURE RESISTANCE TOLERANCE MODEL SIZE P VOLTAGE U COEFFICIENT RANGE E-SERIES 70 max. % W V ppm/K WK2 0207 1.0 500 50 1 4.7 to 1M E24, E96 WK2 0207 1.0 500 100 2 4.7 to 1M E24, E48 WK2 0207 1.0 500 100 5 4.7 to 1M E24 WK2 0207 1.0 500 200 5 0.22 to 1M E24 WR4 0414 2.0 500 200 2 1 to 1M E24, E48 WR4 0414 2.0 500 200 5 0.33 to 1M E24 WR5 0617 3.0 750 200 2 1 to 100K E24, E48 WR5 0617 3.0 750 200 5 0.22 to 560K E24 WK8 0922 4.0 750 200 2 1 to 68K E24, E48 WK8 0922 4.0 750 200 5 0.22 to 100K E24 Notes Coating: Green Marking: WK2 and WR4 have color code band marking. TCR band will be given to only WK2, 100 ppm, 5 %. WR5 and WK8 are printed marked. TECHNICAL SPECIFICATIONS PARAMETER UNIT WK2 WR4 WR5 WK8 Rated Dissipation, P W 1.0 2.0 3.0 4.0 70 (1) Limiting Element Voltage, U V 500 500 750 750 max. Insulation Voltage, U (1 min) V > 500 > 500 > 500 > 500 ins Thermal Resistance, R K/W 140 100 70 60 th Insulation Resistance > 109 (2) Category Temperature Range C -55 to +200 -8 Failure Rate 10 /h < 1 Weight g 0.2 0.7 1.5 3.5 Notes (1) Rated voltage P x R (2) For values < 10R the upper limiting temperature is 155 C. The power rating is correspondingly lower and can be calculated by R . th Revision: 29-Oct-14 Document Number: 20128 1 For technical questions, contact: filmresistorsleaded 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 WK/WR www.vishay.com Vishay Draloric PART NUMBER AND PRODUCT DESCRIPTION WK2-SERIES PART NUMBER: WK202070C1001FD500 W K2 02 0 70 C 10 0 1 F D500 (1) MODEL/SIZE VARIANT TCR VALUE TOLERANCE PACKAGING SPECIAL WK20207 0 = Neutral C = 50 ppm/K 3 digit value F = 1 % 22 = A2 Up to 2 digits B = 100 ppm/K 1 digit multiplier G = 2 % 25 = A5 00 = Standard A = 200 ppm/K MULTIPLIER J = 5 % D5 = R5 -3 2 7 = *10 2 = *10 -2 3 8 = *10 3 = *10 -1 4 9 = *10 4 = *10 0 5 0 = *10 5 = *10 1 6 1 = *10 6 = *10 PRODUCT DESCRIPTION: WK2 50 1K0 1 % R5 WK2 50 1K0 1 % R5 (1) MODEL TCR RESISTANCE VALUE TOLERANCE PACKAGING WK2 50 ppm/K 49K9 = 49.9 k 1 % A2 100 ppm/K 50R1 = 50.1 2 % A5 200 ppm/K 1K0 = 1.0 k 5 % R5 PART NUMBER AND PRODUCT DESCRIPTION WK8-SERIES PART NUMBER: WK80922001000J5C00 W K8 09 2 20 0 10 0 0 J 5C00 (1) MODEL/SIZE VARIANT TCR VALUE TOLERANCE PACKAGING SPECIAL WK80922 0 = Neutral 0 = Standard 3 digit value G = 2 % 5C = AC Up to 2 digits 1 digit multiplier J = 5 % G1 = R1 00 = Standard MULTIPLIER -3 2 7 = *10 2 = *10 -2 3 8 = *10 3 = *10 -1 4 9 = *10 4 = *10 0 5 0 = *10 5 = *10 1 1 = *10 PRODUCT DESCRIPTION: WK8 100R 5 % AC WK8 100R 5 % AC (1) MODEL TCR TOLERANCE PACKAGING WK8 100R = 100 2 % AC 47K = 47 k 5 % R1 PART NUMBER AND PRODUCT DESCRIPTION WR-SERIES PART NUMBER: WR404140A1001GFE00 W R4 04 1 40 A 10 0 1 G FE00 (1) MODEL/SIZE VARIANT TCR VALUE TOLERANCE PACKAGING SPECIAL WR40414 0 = Neutral A = 200 ppm/K 3 digit value G = 2 % 41 = A1 G73 Up to 2 digits 1 digit multiplier 51 = A1 G77 WR50617 J = 5 % 00 = Standard MULTIPLIER FE = RE G73 GP = RP -3 2 7 = *10 2 = *10 -2 3 8 = *10 3 = *10 -1 4 9 = *10 4 = *10 0 5 0 = *10 5 = *10 1 6 1 = *10 6 = *10 PRODUCT DESCRIPTION: WR4 1K0 2 % RE WR4 1K0 2 % RE (1) MODEL RESISTANCE VALUE TOLERANCE PACKAGING WR4 1K0 = 1.0 k 2 % A1 (G73) RE (G73) WR5 51R0 = 51.0 5 % A1 (G77) RP Notes The PART NUMBER shown above is to facilitate the unified part numbering system for ordering products (1) Please refer to table PACKAGING Revision: 29-Oct-14 Document Number: 20128 2 For technical questions, contact: filmresistorsleaded 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