WK2, WR4, WR5, WK8 www.vishay.com Vishay Draloric High Pulse Load, High Power Metal Oxide Leaded Resistors FEATURES High power pulse withstanding capability (up to 1 kW) High power dissipation in small size (1 W / 0207 size to 4 W / 0922 size) WK2 and WR4 are AEC-Q200 qualified High temperature (up to 200 C), heat resistant encapsulation Material categorization: for definitions of compliance please see www.vishay.com/doc 99912 APPLICATIONS Automotive electronics Industrial electronics Power supplies TECHNICAL SPECIFICATIONS DESCRIPTION WK2 WR4 WR5 WK8 Imperial size 0207 0414 0617 0922 Resistance range 0.22 to 1 M 0.33 to 1 M 0.22 to 560 k 0.22 to 100 k Resistance tolerance 1 %, 2 %, 5 % 2 %, 5 % 2 %, 5 % 2 %, 5 % 50 ppm/K, Temperature coefficient 100 ppm/K, 200 ppm/K 200 ppm/K 200 ppm/K 200 ppm/K Rated dissipation, P 1 W2 W3 W4 W 70 (1) Operating voltage, U AC/DC 500 V 500 V 750 V 750 V max. (2) Operating temperature range -55 C to +200 C Thermal resistance (R ) 140 K/W 100 K/W 70 K/W 60 K/W th Insulation voltage: 1 min U > 500V ins -8 Failure rate < 1 x 10 /h Max. resistance change for resistance (5 % R + 0.1 ) (5 % R + 0.1 ) (5 % R + 0.1 ) (2 % R + 0.1 ) range, R max., after: load (1000 h, P ) 70 Notes (1) Rated voltage P x R . (2) For values < 10 the upper limiting temperature is 155 C. The power rating is correspondingly lower and can be calculated by R . th E.g. for WK8 - R is 60 K/W to calculate power P for < 10R T = 25 C th ambient P = T - T /R = (155 - 25) / 60 = 2.16 W Upper Limiting Ambiant th AUTOMOTIVE QUALIFICATION DESCRIPTION WK2 WR4 WR5 WK8 Qualifications AEC-Q200 AEC-Q200 - - Revision: 03-Mar-16 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 WK2, WR4, WR5, WK8 www.vishay.com Vishay Draloric TEMPERATURE COEFFICIENT AND RESISTANCE RANGE TYPE / SIZE TCR TOLERANCE RESISTANCE E-SERIES 50 ppm/K 1 % 4.7 to 1 M E24 E96 100 ppm/K 2 % 4.7 to 1 M E24 E48 WK2 100 ppm/K 5 % 4.7 to 1 M E24 200 ppm/K 5 % 0.22 to 1 M E24 200 ppm/K 2 % 1 to 1 M E24 E96 WR4 200 ppm/K 5% 0.33 to 1 M E24 200 ppm/K 2 % 1 to 100 k E24 E96 WR5 200 ppm/K 5 % 0.22 to 560 k E24 200 ppm/K 2 % 1 to 68 k E24 E48 WK8 200 ppm/K 5 % 0.22 to 100 k E24 PART NUMBER AND PRODUCT DESCRIPTION Part Number: WK202070C1001FD500 W K 2020 70 C 1 0 01 F D 5 00 (1) TYPE / SIZE VARIANT TCR RESISTANCE TOLERANCE PACKAGING SPECIAL WK2 = WK20207 0 = neutral 0 = standard 3 digit value F = 1 % 22 = A2 00 = standard WR4 = WR40414 1 digit multiplier G = 2 % 25 = A5 (for WK8 only) WR5 = WR50617 MULTIPLIER J = 5 % D5 = R5 C = 50 ppm/K -3 WK8 = WK80922 7 = *10 5C = AC B = 100 ppm/K -2 8 = *10 G1 = R1 A = 200 ppm/K -1 9 = *10 41 = A1 G73 0 0 = *10 51 = A1 G77 1 1 = *10 FE = RE G73 2 2 = *10 GP = RP 3 3 = *10 4 4 = *10 5 5 = *10 6 6 = *10 Product Description: WK2 50 1K0 1 % R5 WK2 50 1K0 1 % R5 TYPE / SIZE TCR RESISTANCE VALUE TOLERANCE PACKAGING WK2 50 ppm/K 49K9 = 49.9 k 1 % A2 A5 WR4 100 ppm/K 50R1 = 50.1 2 % R5 WR5 200 ppm/K 1K0 = 1.0 k 5 % AC WK8 R1 41 51 FE GP Note (1) See temperature coefficient and resistance range table for selecting correct TCR and tolerance combination. PACKAGING TYPE / SIZE CODE QUANTITY PACKAGING STYLE WIDTH PITCH DIMENSION A2 2000 5 mm 72 mm x 55 mm x 258 mm Taped acc. to IEC 60286-1 53 mm fan-folded in a box A5 5000 5 mm 75 mm x 114 mm x 260 mm WK2 Taped acc. to IEC 60286-1 R5 5000 5 mm 93 mm x 300 mm x 298 mm on a reel Taped acc. to IEC 60286-1 A1 1000 73 mm 5 mm 95 mm x 57 mm x 260 mm fan-folded in a box WR4 Taped acc.to IEC 60286-1 RE 2500 5 mm 105 mm x 315 mm x 305 mm on a reel Taped acc. to IEC 60286-1 A1 1000 155 mm x 110 mm x 410 mm fan-folded in a box WR5 77 mm 10 mm Taped acc. to IEC 60286-1 RP 1500 119 mm x 353 mm x 353 mm on a reel Taped acc. to IEC 60286-1 AC 120 mm x 118 mm x 412 mm 500 fan-folded in a box WK8 77 mm 10 mm Taped acc.to IEC 60286-1 R1 1000 119 mm x 353 mm x 353 mm on a reel Revision: 03-Mar-16 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