axial silastic guard junction standard rectifier voltage range 1250 to 1300 volts BY127 thru by133 current 1.0 ampere e-mail: sales@cnmic.com web site: www.cnmic.com features low coat construction low forward voltage drop low reverse leakage high forward surge current capability high temperature soldering guaranteed: 260 /10 secods/.375 (9.5mm)lead length at 5 lbs(2.3kg) tension mechanical data case: transfer molded plastic epoxy: ul94v-o rate flame retardant polarity: color band denotes cathode end lead: plated axial lead, solderable per mil-std-202e method 208c mounting position: any weight: 0.012 ounce, 0.33 grams maximum ratings and electrical characteristics ratings at 25 o c ambient temperature unless otherwise specified single phase, half wave, 60hz, resistive or inductive load for capacitive load derate current by 20% symbols BY127 by133 unit maximum repetitive peak reverse voltage v rrm 1250 1300 volts maximum rms voltage v rms 875 910 volts maximum dc blocking voltage v dc 1250 1300 volts maximum average forward rectified current 0.375 (9.5mm) lead length at t a = 25 i (av) 1.0 amps peak forward surge current 8.3ms single half sine wave superimposed on rated load (jedec method) i fsm 30 amps maximum instantaneous forward voltage @ 1.0a v f 1.1 volts t a = 25 5.0 maximum dc reverse current at rated dc blocking voltage per element t a = 100 i r 50 a maximum full load reverse current, full cycle average 0.375 (9.5mm)lead length at t l =75 i r(av) 30 a typical junction capacitance (note 1) c j 15 pf typical thermal resistance (note 2) r ja 50 /w operating junction temperature range t j -55 to +150 storage temperature range t stg -55 to +150 notes: 1. measured at 1.0mhz and applied reverse voltage of 4.0v dc. 2. thermal resistance from junction to ambient at .375 (9.5mm) lead length, p.c.board mounted. 1.0(25.4) min. 1.0(25.4) min. .205(5.2) .166(4.2) .107(2.7) .080(2.0) dia. .034(0.9) .028(0.7) dia. dimensions in inches and (millimeters) do-41
axial silastic guard junction standard rectifier voltage range 1250 to 1300 volts BY127 thru by133 current 1.0 ampere e-mail: sales@cnmic.com web site: www.cnmic.com 1.2 1.0 0.2 rating and chracteristic curves BY127 thur by133 fig.2-maximum non-repetitive peak 100 t j jmax 50 20 10 j t =100 c characteristics 8 5 2 30 20 25 10 1 0 c u r r e n t , ( a ) p e a k f o r w a r d s u r g e 10 number of cycles at 60 hz 8.3ms single half sine-wave (jedec method) =t forward surge current fig.4-typical reverse derating curve fig.1-typical forward current 150 175 125 75 100 0.8 0.6 50 0.4 0 0 single phase inductive load half wave 60hz resistive or 25 a v e r a g e f o r w a r d c u r r e n t , ( a ) 10 fig.3-typical instantaneous forward characteristics ambient temperature, ( c) j t =25 c 80 40 60 100 1.0 0.1 20 0.01 0 ( m a ) percent of rated peak reverse voltage,(%) 100 1.4 j t =25 c 1.2 1.0 0.8 0.6 1% duty cycle pulse width=300us 1 0.1 0.01 ( a ) ( a ) 100 10 instantaneous forward voltage,(v) fig.5-typical junction capacitance 10.0 1.0 4.0 0.1 10 reverse voltage,(volts) tj=25 c f=1mhz c a p a c i t a n c e , ( p f ) 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 , 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 , 1.61.82.0 140 120
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