unisonic technologies co., ltd bas21 preliminary diode www.unisonic.com.tw 1 of 3 copyright ? 2011 unisonic technologies co., ltd qw-r601-040.a general purpose diodes ? description the utc bas21 is a general purpose diode using utc?s planar technology to provide customers with high current capacity and high switching speed. ? features * high current capability * high switching speed ? symbol ? ordering information ordering number pin assignment lead free halogen free package 1 2 3 packing BAS21L-AE3-R bas21g-ae3-r sot-23 x a k tape reel note: pin assignment: a: anode k: cathode x: nc ? marking
bas21 preliminary diode unisonic technologies co., ltd 2 of 3 www.unisonic.com.tw qw-r601-040.a ? absolute maximum ratings parameter symbol ratings unit repetitive peak reverse voltage v rrm 250 v continuous reverse voltage v r 200 v continuous forward current (note 1) i f 200 ma repetitive peak forward current i frm 625 ma t=1s 9 a t=100s 3 a non-repetitive peak forward current (square wave, t j =25 c prior to surge) t=10ms i fsm 1.7 a power dissipation (t a =25c) (note 1) p d 250 mw junction temperature t j 150 c storage temperature t stg -65~+150 c note: absolute maximum ratings are those values be yond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? thermal characteristics parameter symbol ratings unit junction to ambient (note 1) ja 330 k/w note: 1. device mounted on an fr4 printed-circuit board. ? electrical characteristics (t j =25 c, unless otherwise specified.) parameter symbol test conditions min typ max unit i f =100ma 1 v forward voltage v f i f =200ma 1.25 v v r =200v 100 na reverse current i r v r =200v, t j =150c 100 a diode capacitance c d f=1mhz, v r =0 5 pf reverse recovery time t rr when switched from i f =30ma to i r =30ma, r l =100 ? , measured at i r =3ma 50 ns
bas21 preliminary diode unisonic technologies co., ltd 3 of 3 www.unisonic.com.tw qw-r601-040.a ? test circuits and wavefoms d.u.t. i f r s =50 ? v=v r +i f r s r i =50 ? sampling oscilloscope reverse recovery vo ltage test circuit t r 10% t p t v r 90% input signal + i f t rr t (i r =3ma) output signal reverse recovery voltage waveforms utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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