20W TO126 High Power Resistors MHP 20 S Non-Inductive, Small, 20 Watt high power resistor. TO-126 style package offering a very low thermal resistance of 5.9 C/W. Complete thermal flow design available for easy implementation. Superior vibration durability. Small thin package for high density PCB installation. RoHS compliant Applications High frequency emitter resistors in switching power supplies. High precision CRT color video amplifiers. High frequency snubber and pulse handling circuits. VHF amplifiers. Pulse generator load resistors. Specifications Items Specification Conditions Power Rating 20 Watts Tab Temp < 25C Power Rating 1 Watts Free air. Thermal Resistance 5.9C/W From hot spot to tab. Resistance Range 0.01-0.09 0.1-9.1 10-220 Extended resistance range to 51K available Nominal Resistance Series E6 E24 E24 Additional 2.0 and 5.0 also available TCR 250 ppm/C 100 ppm/C 50 ppm/C For -55 to +155C Tolerance +/-5% +/- 5% and 1% +/- 1% Operation Temp. Range -55 to +155 C Dielectric Withstand Voltage 2000 Volts DC 60 seconds. between terminals and flange Load Life R +/- (1.0 %+0.05 ) 25C, 90 min. ON, 30 min.OFF, 1000 hours. Humidity R +/- (1.0 %+0.05 ) 60C, 90-95% RH, DC 0.1W, 1000 hours. Soldering Heat (Max) R +/- (1.0 %+0.05 ) 250+/-5C, 3 seconds, Solderability Min 95% coverage 230+/-5C, 3 seconds. Insulation Resistance Over 1000 M Between terminals and metal back plate. Vibration R +/- (0.25 % ) Specifications subject to change without notice Note: 1. Electrically isolated metal tab. 2. Recommend the use of thermal grease between metal tab and heat sink. 3. Thermal design should account for a thermal resistance between resistor and tab of 5.9C/W and a maximum resistor temperature of 155C. 4. Current rating: 25A maximum. 5. For the resistance range 220 to 51K, the power rating is restricted to 10W. General Note TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT electronics own data and is considered accurate at time of going to print. www.bitechnologies.com www.irctt.com www.welwyn-tt.com TT electronics plc 04.1220W TO126 High Power Resistors MHP 20 S Electrical Performance Electrical Performance Derating Curve Flange Temperature Rise Rating Power (W), with 2.8 C/W heat sink. (C) 140 MHP 20S 100 F MHP 20S 100 F 120 10 +25C 100 8 80 6 60 4 40 2 +155C 20 0 0 -50 0 50 100 150 200 0 10 20 Flange Temperature ( C) Power (W) Frequency Characteristics Pulse Energy Durability Impedance ( ) Pulse peak power (W) 1K MHP20S-100F 100K MHP 20S 1K0 F Tentative continuous-pulse power allowance at duty 0.01 Load life test will be necessary in actual equipment. 10K Because curve will be changed by resistance, repetition, MHP 20S 101 F duty and operating temperature. 100 1K MHP 20S 500 F 200W 100 10 20W 10 MHP 20S 5R0 F 10n 100n 1 u 10u 100u 1m 10m 100m 1 10 100 Pulse width (seconds) 1 100K 1M 10M 100M 1G 10G Frequency(Hz) General Note TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT electronics own data and is considered accurate at time of going to print. www.bitechnologies.com www.irctt.com www.welwyn-tt.com TT electronics plc 04.12