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 fow design available for easy implementation. superior vibration durability. small thin package for high density pcb installation. rohs compliant applications high frequ e ncy emitter resistors in switching power supplies. high precision crt color video amplifers. high frequency snubber and pulse handling circuits. vhf amplifers. pulse generator load resistors. 20w to126 high power resistors mhp 20 s www.bitechnologies.com www.irctt.com www.welwyn-tt.com general note tt electronics reserves the right to make changes in product specifcation without notice or liability. all information is subject to tt electronics own data and is considered accurate at time of going to print. ? tt electronics plc 04.12 specifcations 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. items specifcation 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 fange 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 % ) specifcations
pulse energy durability pulse peak power (w) 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. mhp20s-100f 20w 200w 100k 10k 1k 100 10 10n 100n 1 u 10u 100u 1m 10m 100m 1 10 100 pulse width (seconds) 20w to126 high power resistors mhp 20 s electrical performance electrical performance www.bitechnologies.com www.irctt.com www.welwyn-tt.com general note tt electronics reserves the right to make changes in product specifcation without notice or liability. all information is subject to tt electronics own data and is considered accurate at time of going to print. ? tt electronics plc 04.12 derating cur ve rating power (w), with 2.8 c/w heat sink. 10 +25 c 8 6 ????? 4 2 +15 5c 0 -50 0 50 100 150 20 0 flange te mp erature ( c) mhp 20s 100 f flange temperature ris e ( c) 14 0 12 0 10 0 8 0 6 0 4 0 2 0 0 ? 0 10 20 power ( w ) mhp 20s 100 f frequency characteristics impedance ( ) 1k 100 1 0 1 100k 1m 10m 100m 1g 10g frequency(hz ) mhp 20s 1k0 f mhp 20s 101 f mhp 20s 500 f mhp 20s 5r0 f
20w to126 high power resistors mhp 20 s ordering information www.bitechnologies.com www.irctt.com www.welwyn-tt.com general note tt electronics reserves the right to make changes in product specifcation without notice or liability. all information is subject to tt electronics own data and is considered accurate at time of going to print. ? tt electronics plc 04.12 mhp 20s 500 f model power rating 0.1 : 0r100 50 : 500 first two digits signifcant, last digit: number of trailing zeros tolerance j = 5% tol f = 1% tol 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 dimensions
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