dated : 10/12/2003 ? semtech electronics ltd. ( subsidiary of sino-tech internati onal holdings limited, a company listed on the hong kong stock exchange, stock code: 724 ) db151s thru db157s single-phase glass passivated silicon surface mount bridge rectifiers reverse voltage ? 50 to 1000 volts forward current ? 1.5 ampere features ? high surge overload rating of 50 amperes peak ? ideal for printed circuit board ? plastic material has underwriters laboratory flammability classification 94v-o ? glass passivated chip junction mechanical data ? case molded plastic, db-s ? terminals: leads solderable per mil-std-202, method 208 guaranteed ? mounting position: any maximum ratings and electrical characteristics ratings at 25 o c ambient temperature unless otherwise specifi ed. single phase, half wave, 60hz, resistive or inductive load. for capacitive load, derate current by 20%. symbols db 151s db 152s db 153s db 154s db 155s db 156s db 157s units maximum recurrent peak reverse voltage v rrm 50 100 200 400 600 800 1000 volts maximum rms voltage v rms 35 70 140 280 420 560 700 volts maximum dc blocking voltage v dc 50 100 200 400 600 800 1000 volts maximum average forward rectified current at t a = 40 o c (note 2) i o 1.5 amps peak forward surge current 8.3ms single half-sine-wave superimposed on rated load (jedec method) i fsm 50 amps maximum forward voltage at 1.5a dc and 25 v f 1.1 volts @t a = 25 5 amps maximum reverse current at rated dc blocking voltage @t a =125 i r 500 mamps typical junction capacitance(note 1) c j 25 pf typical thermal resistance(note 2) r 0ja 40 /w typical thermal resistance(note 2) r 0jl 15 /w operating and storage temperature range t j ,t stg -55 to +150 notes: 1.measured at 1 mhz and app lied reverse voltage of 4.0 vdc. 2.units mounted on p.c.b. with 0.5*0.5?(13*13mm) copper pads.
dated : 10/12/2003 ? semtech electronics ltd. ( subsidiary of sino-tech internati onal holdings limited, a company listed on the hong kong stock exchange, stock code: 724 ) fig.1-derating curve output rectified current tj=25 c pulse width=300 s 1% duty cycle 1 00 ambient temperature( c) instantaneous forward voltage(v) f ig.3-typical forward characteristics per leg fig.5-typical junction capacitance per leg reverse voltage(v) j u n c t i o n c a p a c i t a n c e ( p f ) 1 1 10 10 100 i n s t a n t a n e o u s f o r w a r d c u r r e n t ( a ) 0 .6 0 .4 0 .01 0 .1 0 .8 1 1 0 a v e r a g e f o r w a r d o u t p u t c u r r e n t ( a ) p.c.b.mounted on 0.51*0.51"(13*13mm) copper pads 2 0 0 4 0 0 .5 6 0 8 0 1 .0 1 .5 fig.6-typical transient thermal impedance t,heating time(sec) 0.01 t r a n s i e n t t h e r m a l i m p e d a n c e ( c / w ) 100 0.1 1 t j =25 c f=1.0mhz vsig=50mvp-p 10 100 0.1 1 10 100 t j =150 c single sine-wave (jedec method) 8 0 percent of rated peak reverse voltage(v) fig.2-maximum non-repetitive peak forward surge current per leg i n s t a n t a n e o u s r e v e r s e c u r r e n t 1 .0 1 .2 1 .4 0.01 0 0.1 1 10 100 t j =50 c 4 0 2 0 6 0 t j =125 c fig.4-typical reverse leakage characteristics per leg 1 p e a k f o r w a r d s u r g e c u r r e n t ( a ) 1 60 1 20 1 40 1 0 0 2 0 3 0 60hz resistive or inductive load 4 0 5 0 6 0 number of cycles at 60 hz 10 1 00 100 db151s thru db157s ( a)
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