us2af thru US2MF surface mount ultra fast rectifier reverse voltage - 50 to 1000 volts forward current - 2.0 amperes features mechanical data note:1.reverse recovery condition if=0.5a,ir=1.0a,irr=0.25a 2.measured at 1mhz and applied reverse voltage of 4.0v d.c. 3.p.c.b. mounted with 0.2x0.2 ?(5.0x5.0mm) copper pad areas maximum ratings and electrical characteristics volts volts volts symbols units amps amps volts vrrm vrms vdc i (av) ifsm vf 2.0 50.0 1.4 operating junction and storage temperature range maximum repetitive peak reverse voltage maximum rms voltage maximum dc blocking voltage maximum average forward rectified current at t l=55 c peak forward surge current 8.3ms single half sine-wave superimposed on rated load (jedec method) maximum instantaneous forward voltage at 2.0a maximum dc reverse current t a=25 c at rated dc blocking voltage t a=100 c ir 5.0 50.0 rqja cj tj,tstg 50.0 20.0 -50 to +150 pf c a m typical thermal resistance (note 3) c/w typical junction capacitance (note 2) maximum reverse recovery time (note 1) trr 50 75 ns us2af us2bf us2df us2gf us2jf us2kf US2MF ratings at 25 c ambient temperature unless otherwise specified. single phase half-wave 60hz,resistive or inductive load,for capacitive load current derate by 20%. 50 35 50 100 70 100 200 140 200 400 280 400 600 420 600 800 560 800 1000 700 1000 1.0 1.7 mdd catalog number dimensions in inches and (millimeters) smaf c athode band top view 0.128(3.25) 0.144(3.65) 0.189(4.80) 0.173(4.40) 0.110(2.80) 0.094(2.40) 0.051(1.30) 0.059(1.50) 0.055(1.40) 0.043(1.10) 0.012(0.30) 0.006(0.15) 0.047(1.20) 0.028(0.70) glass passivated chip junction the plastic package carries underwriters laboratory flammability classification 94v-0 for surface mounted applications ultra fast switching for high efficiency low reverse leakage built-in strain relief,ideal for automated placement high forward surge current capability high temperature soldering guaranteed 260 c/10 seconds at terminals case terminals : solder plated, solderable per mil-std-750, method 2026 polarity: color band denotes cathode end mounting position : any weight :0.0018 ounce, 0.064 grams : jedec smaf molded plastic body over passivated chip www.szyxwkj.com a l l d a t a s h e e t . c o m
ratings and characteristic curves us2af thru US2MF 2.0 1.6 1.2 0.8 0.4 0 0 25 50 75 100 125 150 175 50 40 30 20 10 0 0.2 0.6 1.0 1.4 1.8 2.0 0.1 1.0 10 100 0.01 0.1 1 10 100 100 10 1 0.1 reverse vol tage,volts t,pulse duration,sec. fig. 5-typical junction capacitance fig. 6-typical transient thermal impedance fig. 3-typical instantaneous forward characteristics number of cycles at 60 hz fig. 2-maximum non-repetitive peak forward surge current fig. 1- forward current derating curve a verage forward rectified current, amperes inst antaneous forward current,amperes junction cap acitance, pf peak for ward surge current, amperes inst antaneous forward voltage, volts single phase half wave 60hz resistive or inductive load 1 10 100 0.01 0.1 1 20 10 tj=25 c 1 10 100 200 0 20 40 60 80 100 1,000 100 10 1 0.1 0.01 tj=100 c tj=25 c percent of peak reverse vol tage,% fig. 4-typical reverse characteristics inst antaneous reverse current, microamperes transient thermal impedance, c/w ambient tempera ture, c tj=25 c pulse width=300 ms 1%duty cycle 8.3ms single half sine-w ave (jedec method) us2af-us2df us2gf us2jf-US2MF www.szyxwkj.com a l l d a t a s h e e t . c o m
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