? semiconductor components industries, llc, 2002 december, 2002 - rev. 4 1 publication order number: MBRP20045CT/d MBRP20045CT preferred device powertap ? ii switchmode ? power rectifier . . . using the schottky barrier principle with a platinum barrier metal. these state-of-the-art devices have the following features: ? dual diode construction e may be paralleled for higher current output ? guardring for stress protection ? low forward voltage ? 150 c operating junction temperature ? guaranteed reverse avalanche mechanical characteristics: ? case: epoxy, molded with metal heatsink base ? weight: 80 grams (approximately) ? finish: all external surfaces corrosion resistant ? top terminal torque: 25-40 lb-in max ? base plate torques: see procedure given in the package outline section ? shipped 25 units per foam ? marking: b20045t maximum ratings rating symbol value unit peak repetitive reverse voltage working peak reverse voltage dc blocking voltage v rrm v rwm v r 45 v average rectified forward current (rated v r , t c = 140 c) per leg per device i f(av) 100 200 a peak repetitive forward current, (rated v r , square wave, 20 khz, t c = 140 c) per leg i frm 200 a non-repetitive peak surge current (surge applied at rated load conditions halfwave, single phase, 60 hz) i fsm 1500 a peak repetitive reverse current (2.0 s, 1.0 khz) per leg i rrm 2.0 a storage temperature range t stg -55 to +150 c operating junction temperature t j -55 to +150 c voltage rate of change (rated v r ) dv/dt 10,000 v/ s schottky barrier rectifier 200 amperes 45 volts device package shipping ordering information MBRP20045CT powertap ii 25 units/tray powertap ii case 357c plastic 1 2 3 1 2 3 preferred devices are recommended choices for future use and best overall value. marking diagram b20045t b20045t = device code yy = year ww = work week yyww http://onsemi.com
MBRP20045CT http://onsemi.com 2 thermal characteristics (per leg) rating symbol value unit thermal resistance, junction to case r q jc 0.6 c/w electrical characteristics (per leg) instantaneous forward voltage (note 1) (i f = 200 amps, t j = 25 c) (i f = 200 amps, t j = 125 c) v f 0.89 0.78 volts instantaneous reverse current (note 1) (rated dc voltage, t j = 125 c) (rated dc voltage, t j = 25 c) i r 50 0.5 ma 1. pulse test: pulse width = 300 m s, duty cycle 2.0%. maximum mechanical ratings terminal penetration: 0.235 max terminal torque: 25-40 in-lb max mounting torque e outside holes: 30-40 in-lb max mounting torque e center hole: 8-10 in-lb max seating plane 1 mil per in. flatness (between mounting holes) powertap mechanical data applies over operating temperature vertical pull 250 lbs. max 2 in. lever pull 50 lbs. max note: while the powertap is capable of sustaining these vertical and levered tensions, the intimate contact note: between powertap and heat sink may be lost. this could lead to thermal runaway. the use of very note: flexible leads is recommended for the anode connections. use of thermal grease is highly recommended. 2
MBRP20045CT http://onsemi.com 3 mounting procedure the powertap package requires special mounting considerations because of the long longitudinal axis of the copper heat sink. it is important to follow the proper tightening sequence to avoid warping the heat sink, which can reduce thermal contact between the powertap and heat sink. 2 - 3 turns 2 - 3 turns 2 - 3 turns power tap heat sink step 2: finger tighten the center bolt. the bolt may catch on the threads of the heat sink so it is important to make sure the face of the bolt or washer is in contact with the surface of the powertap. 2 - 3 turns finger-tight 2 - 3 turns power tap heat sink step 3: tighten each of the end bolts between 5 to 10 in-lb. power tap heat sink 5 - 10 in-lb finger-tight 5 - 10 in-lb step 4: tighten the center bolt between 8 to 10 in-lb. 5 - 10 in-lb 8 - 10 in-lb 5 - 10 in-lb power tap heat sink step 5: finally, tighten the end bolts between 30 to 40 in-lb. 30 - 40 in-lb 8 - 10 in-lb 30 - 40 in-lb power tap heat sink step 1: locate the powertap on the heat sink and start mounting bolts into the threads by hand (2 or 3 turns).
MBRP20045CT http://onsemi.com 4 package dimensions case 357c-03 powertap plastic package issue e b 0.25 (0.010) m ta mm dim a min max min max millimeters 3.450 3.635 87.63 92.33 inches b 0.700 0.810 17.78 20.57 c 0.615 0.640 15.63 16.26 e 0.120 0.130 3.05 3.30 f 0.435 0.445 11.05 11.30 g 1.370 1.380 34.80 35.05 h 0.007 0.030 0.18 0.76 n 1/4-20unc-2b 1/4-20unc-2b q 0.270 0.285 6.86 7.23 r 31.50 bsc 80.01 bsc u 0.600 0.630 15.24 16.00 v 0.330 0.375 8.39 9.52 w 0.170 0.190 4.32 4.82 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. terminal penetration: 5.97 (0.235) maximum. r g w n q b 0.25 (0.010) m ta mm 2 pl e seating plane f v u c h -a- -b- -t- on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to mak e changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and s pecifically disclaims any and all liability, including without limitation special, consequential or incidental damages. typicalo parameters which may be provided in scillc data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including typicalso must be validated for each customer application by customer's technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body , or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indem nify and hold scillc and its of ficers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and re asonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized u se, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employ er. publication ordering information japan : on semiconductor, japan customer focus center 2-9-1 kamimeguro, meguro-ku, tokyo, japan 153-0051 phone : 81-3-5773-3850 email : r14525@onsemi.com on semiconductor website : http://onsemi.com for additional information, please contact your local sales representative. MBRP20045CT/d powertap and switchmode are trademarks of semiconductor components industries, llc. literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 303-675-2175 or 800-344-3860 toll free usa/canada fax : 303-675-2176 or 800-344-3867 toll free usa/canada email : onlit@hibbertco.com n. american technical support : 800-282-9855 toll free usa/canada
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