document number: 93530 for technical ques tions, contact: ind-modules@vishay.com www.vishay.com revision: 17-jun-08 1 pressfit rectifier diodes, 50 a 8af series vishay high power products features ? convenient pressfit package ? available with and without leads ? high surge capabilities ? fully characterized bulletin ? rohs compliant ? designed and qualified for industrial level electrical specifications product summary i f(av) 50 a b-47 rohs compliant major ratings and characteristics parameter test conditions values units i f(av) 50 a t c 150 c i f(rms) 79 a i fsm 50 hz 714 a 60 hz 747 i 2 t 50 hz 2546 a 2 s 60 hz 2324 i 2 t 25 455 a 2 s v rrm range 50 to 400 v t j - 65 to 195 c voltage ratings type number voltage code v rrm , maximum repetitive peak reverse voltage v v rsm , maximum non-repetitive peak reverse voltage v i rrm maximum at t j = t j maximum ma 8af 05 50 75 7 1 100 150 7 2 200 300 5 4 400 500 5
www.vishay.com for technical questi ons, contact: ind-modules@vishay.com document number: 93530 2 revision: 17-jun-08 8af series vishay high power products pressfit rectifier diodes, 50 a note (1) mounting: a 12.6 0.02 mm (0.496 to 0.497") diameter hole shoul d be drilled in heatsink, the le ading edge chamfered to 0.038 m m (0.015") x 45. the autodiode should then be press fitted, ensuring that the sides of the autodiode are kept parallel to the si des of the hole. forward conduction parameter symbol test conditions values units maximum average forward current at case temperature i f(av) 180 conduction, half sine wave 50 a 150 c maximum rms forward current i f(rms) 79 a maximum peak, one cycle forward, non-repetitive surge current i fsm t = 10 ms no voltage reapplied sinusoidal half wave, initial t j = t j maximum 714 a t = 8.3 ms 747 t = 10 ms 100 % v rrm reapplied 600 t = 8.3 ms 628 maximum i 2 t for fusing i 2 t t = 10 ms no voltage reapplied 2546 a 2 s t = 8.3 ms 2324 t = 10 ms 100 % v rrm reapplied 1800 t = 8.3 ms 1643 maximum i 2 t for fusing i 2 t t = 0.1 to 10 ms, no voltage reapplied 25 455 a 2 s low level value of threshold voltage v f(to)1 (16.7 % x x i f(av) < i < x i f(av) ), t j = t j maximum 0.60 v high level value of threshold voltage v f(to)2 ( x i f(av) < i < 20 x x i f(av) ), t j = t j maximum 0.68 low level value of forward slope resistance r f1 (16.7 % x x i f(av) < i < x i f(av) ), t j = t j maximum 6.66 m high level value of fo rward slope resistance r f2 ( x i f(av) < i < 20 x x i f(av) ), t j = t j maximum 6.25 maximum forward voltage drop v fm t j = 25 c, i fm = x rated i f(av) 1.45 v thermal and mechanical specifications parameter symbol test conditions values units maximum junction operating and storage temperature range t j , t stg - 65 to 195 c maximum thermal resistance, junction to case r thjc dc operation 0.60 k/w typical thermal resistance, case to heatsink r thcs as per mounting details, see note (1) 0.50 approximate weight 10 g 0.36 oz. case style see dimensions - link at the end of datasheet b-47
document number: 93530 for technical ques tions, contact: ind-modules@vishay.com www.vishay.com revision: 17-jun-08 3 8af series pressfit rectifier diodes, 50 a vishay high power products note ? the table above shows the increment of thermal resistance r thjc when devices operate at di fferent conduction angles than dc fig. 1 - current ratings characteristics f ig. 2 - current ratings characteristics fig. 3 - forward powe r loss characteristics r thjc conduction conduction angle sinusoidal conduction rect angular conduction test conditions units 180 0.042 0.026 t j = t j maximum k/w 120 0.045 0.043 90 0.06 0.06 60 0.10 0.10 30 0.15 0.15 140 150 160 170 180 190 200 0 5 10 15 20 25 30 35 40 45 50 55 30 60 90 120 180 maximum allowable case temperature (c) conduction angle 8af series r (dc) = 0.6 k/w thjc average forward current (a) 140 150 160 170 180 190 200 0 1020304050607080 dc 30 60 90 120 180 maximum allowable case temperature (c) conduction period average forward current (a) 8af series r (dc) = 0.6 k/w thjc 0 25 50 75 100 125 150 r = 1 k / w - d e l t a r t h s a 1 . 5 k / w 2 k / w 3 k / w 5 k / w 1 0 k / w 1 5 k / w maxi mum allowable ambi ent temperature (c) 0 10 20 30 40 50 60 70 80 0102030405060 average forward current (a) rms limit maximum average forward power loss (w) conduction angle 180 120 90 60 30 8af series t = 195c j
www.vishay.com for technical questi ons, contact: ind-modules@vishay.com document number: 93530 4 revision: 17-jun-08 8af series vishay high power products pressfit rectifier diodes, 50 a fig. 4 - forward power loss characteristics fig. 5 - maximum non-repetitive surge current fig. 6 - maximum non-repetitive surge current fig. 7 - forward volt age drop characteristics fig. 8 - thermal impedance z thjc characteristics 0255075100125150 1 5 k / w 1 0 k / w 5 k / w 3 k / w 1 . 5 k / w r =1 k / w - d e l t a r t h s a 2 k / w maximum allowable ambient temperature (c) 0 10 20 30 40 50 60 70 80 90 0 1020304050607080 dc 180 120 90 60 30 average forward current (a) rms limit maximum average forward power loss (w) conduction period 8af series t = 195c j 150 200 250 300 350 400 450 500 550 600 650 700 110100 peak half sine wave forward current (a) initial t = 195c @ 60 hz 0.0083 s @ 50 hz 0.0100 s at any rated load condition and with rated v applied following surge. rrm j number of equal amplitude half cycle current pulses (n) 8af series 150 200 250 300 350 400 450 500 550 600 650 700 750 0.01 0.1 1 peak half sine wave forward current (a) pulse train duration (s) 8af series maxi mum non repetitive surge current initial t = 195 c no voltage reapplied rated v reapplied rrm versus pulse train duration. j 1 10 100 1000 01234567 instantaneous forward current (a) 8af series t = 195c j t = 25c j instantaneous forward voltage (v) 0.01 0.1 1 0.001 0.01 0.1 1 10 thjc transient thermal impedance z (k/w) 8af series square wave pulse duration (s) steady state value (dc operation)
document number: 93530 for technical ques tions, contact: ind-modules@vishay.com www.vishay.com revision: 17-jun-08 5 8af series pressfit rectifier diodes, 50 a vishay high power products ordering information table 1 - essential part number - voltage code x 100 = v rrm (see voltage ratings table) 3 2 device code 13 24 8af 4 n lv - n = normal polarity (cathode to case) r = reverse polarity (anode to case) 4 - pp = without lead lh = horizontal lead lv = vertical lead links to related documents dimensions http://www.vishay.com/doc?95330
document number: 91000 www.vishay.com revision: 18-jul-08 1 disclaimer legal disclaimer notice vishay all product specifications and data are subject to change without notice. vishay intertechnology, inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, ?vishay?), disclaim any and all liability fo r any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. vishay disclaims any and all li ability arising out of the use or application of any product describ ed herein or of any information provided herein to the maximum extent permit ted by law. the product specifications do not expand or otherwise modify vishay?s terms and conditions of purcha se, including but not limited to the warranty expressed therein, which apply to these products. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of vishay. the products shown herein are not designed for use in medi cal, life-saving, or life-sustaining applications unless otherwise expressly indicated. customers using or selling vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify vishay for any damages arising or resulting from such use or sale. please contact authorized vishay personnel to obtain written terms and conditions regarding products designed for such applications. product names and markings noted herein may be trademarks of their respective owners.
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