? semiconductor components industries, llc, 2006 september, 2006 ? rev. 2 1 publication order number: MR4045/d MR4045 automotive transient voltage suppressor 34 v ? 45 v designed for automotive applications (alternator) requiring reverse avalanche capability for use as transient voltage suppressor. developed to suppress transients in automotive systems, this device operates in the forward mode as standard rectifier or in reverse as transient voltage suppressor for centralized protection. for further information referring to mounting or operating conditions, contact your nearest on semiconductor sales representative. mechanical characteristics ? finish: 100% tin plated all external surfaces are corrosion resistant ? weight: 2.6 grams (approximately) packaging/labeling ? two sealed bags into a cardboard box ? device number labeled on the bag marking ? the devices are laser marked on the epoxy surface maximum rating rating symbol value unit dc blocking voltage v r 30 volts average forward current (single phase, resistive load, t c = 185 c) i o 40 amps peak repetitive reverse surge current (time constant = 10 ms, t c = 25 c) (time constant = 80 ms, t c = 25 c) i rsm i rsm 55 25 amps non ? repetitive peak surge current (halfwave, single phase, 50 hz) i fsm 500 amps storage temperature range t stg ? 40 to +200 c maximum operating junction temperature t j 200 c device package shipping ordering information n suffix (anode to cup) p suffix (cathode to cup) case 193a http://onsemi.com MR4045n button can 5000 units/box MR4045p button can 5000 units/box marking diagram nl = location code 2n or 2p = device code and polarity yy = year ww = work week ### = assembly lot number
MR4045 http://onsemi.com 2 thermal characteristics characteristic symbol value unit thermal resistance junction to case r jc 0.4 c/w electrical characteristics characteristic symbol min max unit instantaneous forward voltage (note 1.) (i f = 100 amps, t c = 25 c) v f ? 1.1 volts reverse current (note 1.) (v r = 28 vdc, t c = 25 c) i r ? 1.0 a breakdown voltage (note 1.) (i r = 100 ma, t c = 25 c) v (br) 34 45 volts breakdown voltage (i r = 80 amps, t c = 25 c, pw = 80 s) (i r = 80 amps, t c = 85 c, pw = 80 s) v (br) ? ? 53 55 volts breakdown voltage temperature coefficient v (br)tc 0.095* %/ c forward voltage temperature coefficient (i f = 10 ma) v ftc ? 2* mv/ c 1. pulse test: pulse width < 300 s, duty cycle < 2%. **typical figure 1. typical reverse current figure 2. typical forward voltage figure 3. maximum peak reverse current figure 4. maximum peak reverse power t, time constant (ms) t, time constant (ms) i 1000 100 10 1 10 100 p 1000 100 10 1 100 1000 10000 rsm , peak reverse current (a) , peak reverse power (w) rsm t c = 25 c t c = 25 c v r , reverse voltage (v) i 30 20 10 0 0.001 0.1 1 10 100 1000 , reverse current ( a) r t j = 200 c 0.01 150 c 100 c 25 c 100 c v f , instantaneous forward voltage (mv) i 1100 900 800 700 500 1 10 100 1000 f , instantaneous forward current (a) t j = 200 c 25 c 600 150 c 1000
MR4045 http://onsemi.com 3 t, time (s) 0.5 0.3 0.2 0.1 0 0 20 40 60 80 100 (%) 0.4 di/dt < 1 a/ s 2 ohms di/dt limitation 100 h MR4045n MR4045p x mf 0 ? 150 v t (50%) t (10%) t (37%) t (37%) = time constant t (50%) = 0.7 t (37%) t (10%) = 2.3 t (37%) v r , reverse voltage (v) c, capacitance (pf) 20 15 10 5 0 4000 5000 6000 7000 8000 9000 10000 t c , case temperature ( c) i 220 180 160 140 120 100 0 10 20 30 40 60 , average forward current (a) f(avg) 200 50 figure 5. maximum reverse energy t, time constant (ms) w 1000 100 10 1 1 1000 rsm , peak reverse energy (j) t c = 25 c 100 10 figure 6. maximum current rating figure 7. typical capacitance figure 8. load dump test circuit figure 9. load dump pulse current
MR4045 http://onsemi.com 4 package dimensions n suffix (anode to cup) p suffix (cathode to cup) case 193a ? 02 issue a notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeter. dim a min max min max inches 11.4 11.6 0.449 0.457 millimeters b 9.3 9.7 0.366 0.382 c 4.3 4.9 0.169 0.193 d 5.4 5.6 0.213 0.220 e 3.6 4.2 0.142 0.165 f 1.0 2.0 0.039 0.079 a f d ec b 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 an y particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including wi thout limitation special, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different application s and actual performance may vary over time. all operating parameters, including ?typicals? 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 indemnify and hold scillc and its of ficers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, direct ly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws and is not for resale in any manner. publication ordering information n. american technical support : 800 ? 282 ? 9855 toll free usa/canada europe, middle east and africa technical support: phone: 421 33 790 2910 japan customer focus center phone: 81 ? 3 ? 5773 ? 3850 MR4045/d 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 : orderlit@onsemi.com on semiconductor website : www.onsemi.com order literature : http://www.onsemi.com/orderlit for additional information, please contact your local sales representative
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