140W TO247 High Power Resistors MHP 140 * * * * * * Non-inductive, high power resistor. Thermally enhanced Industry standard TO-247 package. Extremely Low thermal resistance, 0.9 C/W resistor hot spot to metal tab. Complete thermal flow design available for easy implementation. Small thin package for high density PCB installation. RoHS compliant. Applications High frequency circuits and RF power amplifiers. UPS and power supply circuits Motor control and power/RF power amplifiers. Industrial power equipment. PLC drivers. Inrush current protection. * * * * * * Specifications Items Specification Conditions Power Rating 140 Watts @ Tab Temp < 25C Power Rating 2.0 Watts Free air. Resistance Range Nominal Resistance Series TCR Tolerance 0.01-0.09 0.1-9.1 10-220 E6 E12 E24 250 ppm/C 100 ppm/C 50 ppm/C 5% 5% and 1% 1% Operation Temp. Range -55 - +155 C Rated Voltage (Max). 700V or (P*R) Dielectric Withstand Voltage 2500 Volt Extended resistance range to 51K avail. 2.0 and 5.0 also available. For -55 to +155C 60 seconds. Load Life R +/- (1.0 %+0.05 ) 25C, 90 min. ON, 30 min.OFF, 1000 hours. Humidity R +/- (1.0 %+0.05 ) 40C, 90-95% RH, DC 0.1W, 1000 hours. Temperature Cycle R +/- (0.25 %+0.05 ) -55C, 30 min.,+155C 30min., 5cycles. Soldering Heat (Max) R +/- (0.25 %+0.05 ) 250+/-5C, 3 seconds, Min 75% coverage 230+/-5C, 3 seconds. Solderability Insulation Resistance Vibration Over 1000 M Between terminals and metal back plate. R +/- (0.25 %+0.05 ) 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 0.9C/W and a maximum resistor temperature of 155C. 4. Resistances greater than 220 are available, please call factory. 5. Current rating: 25A maximum. 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 (c) TT electronics plc 04.12 140W TO247 High Power Resistors MHP 140 Electrical Performance Derating Curve Temperature Rise Power rating (Watts) 140 120 150 25C 125 80 100 60 75 40 50 20 25 0 MHP140 1R5J 100 +155C -50 0 50 100 150 Flange Temperature (C) 0 200 Pulse peak power (W) 10K 25 50 75 Power (Watts) 100 125 150 Frequency Characteristics Pulse Energy Durability 100K 0 MHP140-100F 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. 1K 100 1K 1350W Impedance () 140W MHP140 100 F 100 10 10 10n 100n 1u 10u 100u 1m 10m 100m Pulse width (seconds) 1 10 100 1 10K 100K 1M 10M Frequency (Hz) 100M 1G 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 (c) TT electronics plc 04.12 140W TO247 High Power Resistors MHP 140 Dimensions MHP140 mm Epoxy Molding Copper Wire Leads Conductor Resistor Film Alumina Copper Plate A 16.0 0.2 B 20.0 0.5 C 4.8 0.2 D 3.2 0.1 E 14.5 0.5 F - - G 5.1 0.5 H 3.63 0.2 J - - K 0.8 0.05 L - M 10.9 0.1 N Mounting Recommendations Sufficient torque must be used to obtain optimum heat transfer. Ordering Information MHP 140 500 F Model Resistance Code 0.1 : 0R1 50 : 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 (c) TT electronics plc 04.12