- 46 - features for surface mounted application easy pick and place metal to silicon rectifier, majority carrier conduction low power loss, high efficiency high current capability, low vf high surge current capability plastic material used carriers underwriters laboratory classification 94v-0 epitaxial construction high temperature soldering: 260 o c / 10 seconds at terminals mechanical data case: jedec sma/ do-214ac molded plastic terminals: pure tin plated, lead free polarity: indicated by cathode band weight: 0. 06 4 gram maximum ratings and electrical characteristics rating at 25 o c ambient temperature unless otherwise specified. single phase, half wave, 60 hz, resistive or inductive load. for capacitive load, derate current by 20% type number symbol ss 32a ss 33a ss 34a ss 35a ss 36a ss 39a ss 310 a ss 3 20a units maximum recurrent peak reverse voltage v rrm 20 30 40 50 60 90 100 20 0 v maximum rms voltage v rms 14 21 28 35 42 63 70 140 v maximum dc blocking voltage v dc 20 30 40 50 60 90 100 20 0 v maximum average forward rectified current at t l (see fig. 1) i (av) 3.0 a peak forward sur g e current, 8.3 ms sin g le half sine-wave superimposed on rated load (jedec method ) i fsm 100 70 a maximum instantaneous forward voltage (note 1) if= 3.0a @ 25 o c @ 100 o c v f 0.5 0.4 0.75 0.65 0.85 0.70 0.95 0.80 v 0.5 0.1 maximum dc reverse current @ t a =25 o c at rated dc blocking voltage @ t a =125 o c i r 10 5 0.5 ma ma operating temperature range t j -55 to +125 -55 to +150 o c storage temperature range t stg -55 to +150 o c notes: 1. pulse test with pw=300 usec, 1% duty cycle ss32a - ss320a 3 .0 amps. surface mount schottky barrier rectifiers dimensions in inches and (millimeters) sma/do-214ac typical thermal resistance ( note 2 ) r jl r ja 28 88 o c/w http://www.luguang.cn mail:lge@luguang.cn
ratings and characteristic curves (ss32 a thru ss320a) fig.2- maximum non-repetitive peak forward surge current peak forward surge current. (a) 1 10 100 100 80 60 40 20 0 number of cycles at 60hz at rated tl 8.3ms single half sine wave jedec method fig.1- maximum forward current derating curve average forward current. (a) 50 60 70 80 90 100 110 120 160150140130 0 1 2 3 o lead temperature. ( c) resistive or inductive load ss32a -ss34 a ss35 a-ss3 20a pcb mounted on 0.6x0.6" (16x16mm) copper pad areas fig.3- typical forward characteristics instantaneous forward current. (a) 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0.01 0.1 1 10 40 forward voltage. (v) 0 tj=25 c pulse width=300 s 1% duty cycle fig.4- typical reverse characteristics instantaneous reverse current. (ma) 0 20 40 60 80 100 120 140 0.001 0.01 0.1 1 10 20 percent of rated peak reverse voltage. (%) 0 tj=125c 0 tj=25 c 0 tj=75c ss32 a -SS34A ss35 a -ss3 20a fig.5- typical junction capacitance junction capacitance.(pf) 0.1 1 10 100 10 100 1000 reverse voltage. (v) ss32a-SS34A ss35a-ss36a ss39a-ss320a 0 tj=25c f=1.0mhz vsig=50mvp-p ss32a-SS34A ss39a -ss3 20 a ss35a-ss36a ss3 20a ss32a - ss320a 3 .0 amps. surface mount schottky barrier rectifiers fig.6- typical transient thermal characteristics transient thermal impedance. ( c/w) o 1 0.01 0.1 10 100 100 10 1 0.1 t, pulse duration. (sec) http://www.luguang.cn mail:lge@luguang.cn
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