POWER SOLUTIONS - WILLOW TECHNOLOGIES LTD CHASSIS MOUNTING NON-INDUCTIVE HIGH POWER RESISTORS RPF-10, RPF-50, RPF-100, RPF-250 Features and Applications Chassis mounting high power resistor of 10W to 250W rating power. Small in regard to thickness and with vertical terminal wires so suitable for high density electronic design. Also, a decrease in the inductive effect in power electronics circuits will be realized. Complete thermal conduction and heat dissipation design will be available. Gate resistor and snubber resistor in power supply. Load resistor and dumping resistor in high end audio. Precision terminal resistor in RF amplifiers. Specifications and Performances Specification Items Rating Power Resistance Range Nominal Resistance TCR Tolerance Operation Temp. Range Max. Applied Voltage Withstanding Voltage Load Life Humidity Temperature Cycle RPF-10 10 Watt 10ohm～ 20Kohm E24 ±50 ppm/℃ ±1% and ±5% RPF-50 50W 10ohm～ 1Kohm E24 ±50 ppm/℃ ±1% and ±5% -55 - +155 ℃ 1000 VDC RPF-250 250W 1ohm～ 1Kohm E24 ±250 ppm/℃ ±10% ±10% Test Conditions With heat sink, 2.8℃/W. Additionally, 2.0 and 5.0. For -55 to +155 ℃ -55 - +120 ℃ E = P⋅R 2KVDC 5KVDC ±(1.0 %+0.05 ohm) ±(1.0 %+0.05 ohm) ±(0.25 %+0.05 ohm) Short Time Overload Soldering Heat Solderability Insulation Resistance Vibration RPF-100 100W 10ohm～ 1Kohm E24 ±250 ppm/℃ 5KVDC ±(1.0 %+0.05 ohm) ±(0.25 %+0.05 ohm) ±(0.25 %+0.05 ohm) Over 3/4 of round Over 1000 Mohm ±(0.25 %+0.05 ohm) 60 seconds. 25℃, 90 min.ON, 30min.OFF, 1000hours. 70℃, 90～95%RH, DC0.1W, 1000hours. -55℃, 30 min.,+155℃30min., 20cycles. (-55℃, 30 min.,+120℃30min., 20cycles. at RPF-100) Rating watt×2.5, 2.5seconds, with heat sink. 350±5℃, 3seconds, 230±5℃, 3seconds. Between terminals and tab. Ordering Information P/N Type TCR Resistance Tolerance RPF-10C10 ohmF000 RPF-10 C (50ppm/K) 10 ohm F(1%) RPF-50C100 ohmF000 RPF-50 C (50ppm/K) 100 ohm F(1%) RPF-100-999 RPF-100 H (250ppm/K) Specification K(10%) RPF-250-999 RPF-250 H (250ppm/K) Specification K(10%) Note: Resistance and length of wire terminals of RPF-100 and RPF250 are specified by individual call factory. [email protected] Remarks 999: three digit 999: three digit specification draw. Willow Technologies Ltd. Shawlands Court Newchapel Road Lingfield Surrey RH7 6BL ENGLAND Tel. +44 (0) 1342 835234 Fax. +44 (0) 1342 834306 Web. www.willow.co.uk E-mail. [email protected] Please POWER SOLUTIONS - WILLOW TECHNOLOGIES LTD CHASSIS MOUNTING NON-INDUCTIVE HIGH POWER RESISTORS RPF-10, RPF-50, RPF-100、RPF-250 Dimensions (mm) RPF-10TypeA 8±0.5 5±0.5 (15) 2-3.2φ 13±0.2 20±0.2 ＲＰＦ-50 20±0.2 8±0.5 5±0.5 (15) 2-φ3.2 30±0.5 5.0±0.5 13±0.2 20±0.2 19.3±0.2 44±0.5 Note: Lead material is Tin plated copper. RPF-100 40+/-0.2 50+/-0.2 40+/-0.2 RPF-250 50+/-0.2 2-3.2φ RPF-10 TypeB 6-4.2 dia. 4-dia.4.5 40+/-0.2 50+/-0.2 45+/-0.2 10+/-0.5 45+/-0.2 100+/-0.2 Derating Curve, RPF-10, RPF-50, Derating Curve, RPF-100, 250 %Rating Power %Rating Power 100 100 80 80 60 60 40 40 +155 20 0 -50 0 +50 +100 +150 +120C 20 +200 0 -50 Flange Temperature （C） 0 +50 +100 +150 +200 Flange Temperature (C) Note: RPF-20S was discontinued, please use RPF-50 high power resistor. 20050212 Willow Technologies Ltd. Shawlands Court Newchapel Road Lingfield Surrey RH7 6BL ENGLAND Tel. +44 (0) 1342 835234 Fax. +44 (0) 1342 834306 Web. www.willow.co.uk E-mail. [email protected]