unisonic technologies co., ltd us1m preliminary diode www.unisonic.com.tw 1 of 3 copyright ? 2014 unisonic technologies co., ltd qw-r601-224.a surface mount ultra fast rectifier ? description the utc us1m is a surface mount ultra fast rectifier, it uses utc?s advanced technology to provide custom ers with ultra fast switching, high forward surge current and low reverse leakage, etc. the utc us1m is suitable for surface mounted applications. ? features * ultra fast switching for high efficiency * low reverse leakage * high forward surge current capability ? symbol sma (jedec do-214ac) + - ? ordering information ordering number package pin assignment packing lead free halogen free 1 2 us1ml-sma-r US1MG-SMA-R sma k a tape reel note: pin assignment: a: anode k: cathode ? marking information package marking sma date code cathode band for uni-directional only utc us1m l: lead free g: halogen free
us1m preliminary diode unisonic technologies co., ltd 2 of 3 www.unisonic.com.tw qw-r601-224.a ? absolute maximum ratings ratings at 25c ambient temperatur e unless otherwise specified. single phase half-wave 60hz, resistive or inductive load, for capacitive load current derate by 20%. parameter symbol ratings unit repetitive peak reverse voltage v rrm 1000 v rms voltage v rms 700 v dc blocking voltage v dc 1000 v average forward rectified current at t l =55c i ( av ) 1.0 a peak forward surge current 8.3ms single half sine-wave superimposed on rated load (jedec method) i fsm 30.0 a junction temperature t j -65~+150 c storage temperature t stg -65~+150 c note: absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? thermal data parameter symbol ratings unit junction to ambient (note 3) ja 50 c/w ? electrical characteristics ratings at 25c ambient temperatur e unless otherwise specified. single phase half-wave 60hz, resistive or inductive load, for capacitive load current derate by 20%. parameter symbol test conditions min typ max unit instantaneous forward voltage v f i f =1.0a 1.7 v dc reverse current at rated dc blocking voltage i r t a =25c 5.0 a t a =100c 50.0 a reverse recovery time (note 1) t r r 75 ns junction capacitance (note 2) c j 15.0 pf notes: 1. reverse recovery condition i f =0.5a, i r =1.0a, irr=0.25a. 2. measured at 1mhz and appli ed reverse voltage of 4.0v d.c. 3. p.c.b. mounted with 0.2x0.2? (5.0x5.0mm) copper pad areas.
us1m preliminary diode unisonic technologies co., ltd 3 of 3 www.unisonic.com.tw qw-r601-224.a 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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