yfw catalog us2a thru us2m surface mount ultra fast rectifier reverse voltage - 50 to 1000 volts forward current - 2.0 amperes 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: 250 c/10 seconds at terminals features mechanical data note: 1.reverse recovery condition i f =0.5a,i r =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 v rrm v rms v dc i (av) i fsm v f 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 =75 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 =125 c i r 5.0 350.0 r q ja c j t j , t stg 20.0 28.0 -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) t rr 50 75 ns us2a us2b us2d US2G us2j us2k us2m 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 number dimensions in inches and (millimeters) 0.177(4.50) 0.157(3.99) 0.110(2.80) 0.100(2.54) 0.060(1.52) 0.030(0.76) 0.2 08 (5. 28 ) 0.1 88 (4. 80 ) 0.008(0.203)max. 0.096(2.42) 0.078(1.98) sma/do-214ac 0.067 (1.70) 0.051 (1.30) case : jedec do-214ac molded plastic body terminals : leads solderable per mil-std-750, method 2026 polarity : color band denotes cathode end mounting position : any weight :0.002 ounce, 0.07 grams www.yfwdiode.com
ratings and characteristic curves us2a thru us2m 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 voltage,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 average forward rectified current, amperes instantaneous forward current,amperes junction capacitance, pf peak forward surge current, amperes instantaneous forward voltage, volts single phase half wave 60hz resistive or inductive load 1 10 100 0.01 0.1 1 20 10 t j =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 voltage,% fig. 4-typical reverse characteristics instantaneous reverse current, microamperes transient thermal impedance, c/w ambient temperature, c t j =25 c pulse width=300 m s 1%duty cycle 8.3ms single half sine-wave (jedec method) us2a-us2d US2G us2j-us2m www.yfwdiode.com
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