mmsd459a ? small signal diode ? 2011 fairchild semiconductor corporation www.fairchildsemi.com mmsd459a rev. a0 1 august 2011 mmsd459a small signal diode absolute maximum ratings* t a = 25 c unless otherwise noted * these ratings are limiting values above which the servic eability of any semiconductor device may be impaired. notes: 1) these ratings are based on a maximum junction temperature of 200 degrees c. 2) these are steady state limits. the fa ctory should be consulted on applications involving pulsed or low duty cycle operations. thermal characteristics electrical characteristics t a = 25 c unless otherwise noted symbol parameter value units v rrm maximum repetitive reverse voltage 100 v i f(av) average rectified forward current 200 ma i fsm non-repetitive peak forward surge current pulse width = 1.0 second pulse width = 1.0 microsecond 1.0 4.0 a a t stg storage temperature range -55 to +150 c t j operating junction temperature 150 c symbol parameter value units p d power dissipation 400 mw r ja thermal resistance, junction to ambient 312 c/w symbol parameter test conditions min. max. units v r breakdown voltage i r = 100 a 200 v v f forward voltage i f = 100ma 1.0 v i r reverse leakage v r = 175v v r = 175v, t a = 150 c 25 5.0 na a c t total capacitance v r = 0, f = 1.0mhz 6.0 pf sod123 color band denotes cathode top marking: 22
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