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 < 25°C Power Rating 1 Watts Free air. Thermal Resistance 5.9°C/W From hot spot to tab. Resistance Range Nominal Resistance Series TCR Tolerance 0.01-0.09 Ω 0.1-9.1 Ω 10-220 Ω E6 E24 E24 250 ppm/°C 100 ppm/°C 50 ppm/°C +/-5% +/- 5% and 1% +/- 1% Operation Temp. Range -55 to +155 °C Dielectric Withstand Voltage 2000 Volts DC Extended resistance range to 51KΩ available Additional 2.0Ω and 5.0 Ω also available For -55 to +155°C 60 seconds. between terminals and flange Load Life ΔR +/- (1.0 %+0.05 Ω) 25°C, 90 min. ON, 30 min.OFF, 1000 hours. Humidity ΔR +/- (1.0 %+0.05 Ω) 60°C, 90-95% RH, DC 0.1W, 1000 hours. Soldering Heat (Max) ΔR +/- (1.0 %+0.05 Ω) 250+/-5°C, 3 seconds, Min 95% coverage 230+/-5°C, 3 seconds. Solderability Insulation Resistance Vibration Over 1000 MΩ Between terminals and metal back plate. ΔR +/- (0.25 % Ω) 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 5.9°C/W and a maximum resistor temperature of 155°C. 4. Current rating: 25A maximum. 5. For the resistance range 220Ω to 51KΩ, 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 04.12 20W TO126 High Power Resistors MHP 20 S Electrical Performance Electrical Performance Derating Curve Rating Power (W), with 2.8°C/W heat sink. MHP 20S 100 F 10 100 80 6ㅤㅤㅤㅤㅤ 60 4 40 2 20 +155°C 0 -50 0 50 100 150 Flange Temperature (°C) 0 ㅤ0 200 Frequency Characteristics Pulse peak power (W) MHP 20S 1K0 F 100K MHP 20S 101 F 10K 1K MHP 20S 500 F 20 MHP20S-100F Tentative continuous-pulse power allowance at duty 0.01 Load life test will be necessary in actual equipment. Because curve will be changed by resistance, repetition, duty and operating temperature. 200W 100 10 20W 10 10n MHP 20S 5R0 F 1 10 Power (W) Pulse Energy Durability Impedance (Ω) 1K 100 MHP 20S 100 F 120 +25°C 8 Flange Temperature Rise (°C) 140 100K 1M 10M 100M Frequency(Hz) 1G 100n 1 u 10u 100u 1m 10m 100m Pulse width (seconds) 1 10 100 10G 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 20W TO126 High Power Resistors MHP 20 S Dimensions MHP100 mm ± mm A 8.5 ± 0.2 B 12.0 ± 0.2 C 3.1 ± 0.2 D 3.1 ± 0.1 E 17.0 ± 1.0 F 3.2 ± 0.5 G 3.8 ± 0.2 H 1.75 ± 0.1 J 0.5 ± 0.05 K 0.6 ± 0.05 L 1.4 ± 0.05 M 5.08 ± 0.1 Ordering Information MHP 20S 500 F Model Power Rating 0.1Ω : 0R100 50 Ω : 500 First two digits significant, last digit: number of trailing zeros Tolerance J = 5% Tol F = 1% Tol 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