features integrally molded heatsinks provide very low thermal resistance for maximum heat dissipation. surge overload rating to 500 amperes. high temperature soldering guaranteed: 260 /10 second, at 5 lbs tension. mechanical data case: epozy, molded plastic with heatsink integrally mounted in the bridge encapsulation. mounting position: bolt down on heatsink with silicon thermal compound between bridge and mounting surface for maximum heat transfer efficiency. mounting torque: 20 in. lbs max. weight: 0.706 ounce, 20 gram maximum ratings and electrical characteristics ratings at 25 ambient temperature unless otherwise specified single phase, half wave, 60hz, resistive or inductive load. for capacitive load derate current by 20% symbols unit v rrm volts working peak reverse voltage v rwm volts maximum dc blocking voltage v dc volts maximum average forward rectified output current, at t c = 55 (note 2) peak forward surge current 8.3ms single half sine - wave superimposed on rated load (jedec method ) rating for fusing (t<8.3ms) i 2 ta 2 s per bridge element at 17.5a maximum dc reverse current at rated dc blocking voltage per element t a = 25 typical thermal resistance per element r /w isolation voltage from case to leads. v iso v ac operating temperature range t j storage temperature range t stg 1. measured at 1.0 mhz and applied reverse voltage of 4.0 volts. 2. unit mounted on 11.8" x 11.8" x 0.6" think (300 x 200 x 15mm) copper plate. maximum instantaneous forward voltage drop i (av) i fsm 2.0 peak repetitive reverse voltage amps a (-65 to +150) (-65 to +150) v f i r MT3508 mt3512 2500 amps volts three - phase bridge rectifier mt3516
MT3508-3516 http:// www.wej.cn e-mail:wej@yongerjia.com wej electronic co. r o hs wej electronic co.,ltd
average power dissipation of bridge instantaneous forward current, t =25 c pulse width=300us instantaneous forward voltage,(v) 1.2 1%duty cycle 0.1 0.4 1.0 0.8 0.6 1.0 j 1.4 1.6 1.8 2.0 average output current,(a) 1.0 0 5 2.0 10 15 20 25 30 35 average forward current, (a) average forward current, case temperature, ( c) forward characteristics fig.3-typical instantaneous (a) 10 100 0 1000 0 10 7525 50 inductive or resistive 60hz load (w) 175 150 125100 derating curve fig.1-typical forward current 11.8" x 11.8" x 0.06" thick mounted on a 20 30 35 (30 x 30 x 0.15cm) copper plate (a) ambient temperature, ( c) 150 100 4.0 6.0 10 8.0 40 20 60 80 inductive or resistive fig.4-maximum power dissipation 5025 0 60hz load 0 10 12575 100 175 fig.1-typical forward current (30.3 x 30.3 x 0.635cm) 12" x 12" x 0.25" thick derating curve 20 30 35 mounted on a al. plate inductive or resistive load 60hz 55 25 15 5 MT3508-3516 http:// www.wej.cn e-mail:wej@yongerjia.com wej electronic co. r o hs wej electronic co.,ltd
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