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WK8 Datasheet(PDF) 3 Page - Vishay Siliconix |
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WK8 Datasheet(HTML) 3 Page - Vishay Siliconix |
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3 / 5 page  www.vishay.com For technical questions, contact: filmresistorsleaded@vishay.com Document Number: 20128 178 Revision: 26-May-10 WK/WR Vishay Draloric High Power Metal Oxide Leaded Resistors DIMENSIONS Notes (1) 9 mm for WR5/WK8 • Taping in acc. with IEC 60286-1 • D and L measured in acc. with IEC 60294 • d according to IEC 60301 PACKAGING MODEL REEL BOX PIECES/REEL CODE MIN. ORDER QTY PACKAGING UNITS PIECES/BOX CODE MIN. ORDER QTY PACKAGING UNITS WK2 5000 R5 1 5000 2000 A5 A2 1 1 WR4 2500 RE 2 1000 A1 (G73) 2 WR5 1500 RP 2 1000 A1 (G77) 2 WK8 1000 R1 2 500 AC 2 L 1 L d D B e 6 mm (1) MODEL DIMENSIONS [in millimeters] DL L1 max. Bd e WK2 2.5 - 0.5 6.5 - 0.5 8.0 53 ± 1 0.6 7.5 WR4 3.9 - 0.5 10.0 - 1.6 12.0 73 ± 1 0.8 15.0 WR5 6.0 - 0.5 16.5 - 1.5 20.0 77 ± 1 0.8 17.5 WK8 9.0 - 0.5 20.0 - 1.5 24.0 77 ± 1 0.8 22.5 120 100 80 60 40 20 0 - 55 0 40 80 120 160 200 240 280 320 360 70 AMBIENT TEMPERATURE IN °C DERATING 300 250 200 150 100 50 0 0 1.0 2.0 3.0 4.0 5.0 POWER IN W TEMPERATURE RISE WR4 WK2 WR5 WK8 WR 5 WR 4 WK 8 WK 2 10 WR 5 WR 4 WK 8 WK 2 10 -5 10 -4 100 10 -1 10 0 10 101 10 -1 10 -2 10 0 10 -3 102 10-1 10 -5 10 -4 10 -3 10 -2 103 PULSE RATING O Secondary Conditions: a) ϑ b) ϑu ≤ 70 °C c) Û max. see diagram below d) ~ 10R Secondary Conditions: a) ≤ 70 (permissible constant power at ϑu = 70 °C) b) ϑu ≤ 70 °C c) Û max. see diagram below d) ~ 10R SQUARE PULSE i [s] t SQUARE PULSE i [s] t P PULSE RATING ≤ 70 PP P PP WK2 WR4 WR5 WK8 100 101 102 10-1 103 |
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