BF420 rev.e mar.-2016 data sheet http://www.fsbrec.com 1 / 6 to-92 ?? npn ?? silicon npn transistor in a to-92 plastic package. ??, bf421 high voltage, complementary pair with bf421. ?????,?? high voltage switching and amplifier, color tv chrome output. pin1 base pin 2 collector pin 3 emitter ?? / hfe classifications & marking ?? see marking instructions. / descriptions / features ? / applications ? / equivalent circuit / pinning 1 2 3
BF420 rev.e mar.-2016 data sheet http://www.fsbrec.com 2 / 6 parameter symbol ? rating unit collector to base voltage v cbo 300 v collector to emitter voltage v ceo 300 v emitter to base voltage v ebo 5.0 v collector current - continuous i c 50 ma peak collector current i cm 100 ma collector power dissipation p c 830 mw peak base current i bm 50 ma junction temperature t j 150 storage temperature range t stg -55 150 parameter symbol test conditions ? min ? typ ? max unit collecto r cut-off current i cbo v cb =200v i e =0 0.01 a c emitte r cut-off current i ebo v eb =5.0v i c =0 0.05 a dc current gain h fe v ce =20v i c =25ma 50 collector to emitter saturation v oltage v ce(sat) i c =30ma i b =5.0ma 0.6 v base to emitter voltage v be v ce =20v i c =25ma 0.75 v transition frequency f t v ce =10v i c =10ma 60 mhz reverse transfer capacitance c re v cb =30v i e =0 f=1.0mhz 1.6 pf ? / absolute maximum ratings(ta=25 ) ? / electrical characteristics(ta=25 )
BF420 rev.e mar.-2016 data sheet http://www.fsbrec.com 3 / 6 ? / electrical characteristic curve
BF420 rev.e mar.-2016 data sheet http://www.fsbrec.com 4 / 6 ?? / package dimensions
BF420 rev.e mar.-2016 data sheet http://www.fsbrec.com 5 / 6 ?? / marking instructions ? br: ?? BF420 ??? **** ???? note: br: company code. BF420: product type. ****: lot no. code,code change with lot no. br **** BF420
BF420 rev.e mar.-2016 data sheet http://www.fsbrec.com 6 / 6 ??? ( ? ) / temperature profile for dip soldering(pb-free) ? note: 1 ?? 25 150 ? 60 90sec; 1.preheating:25~150 , time:60~90sec. 2 ?? 255 5 ?? 5 0.5sec; 2.peak temp.:255 5 , duration:5 0.5sec. 3 ???? 2 10 /sec. 3. cooling speed: 2~10 /sec. ? / resistance to soldering heat test conditions ?? 270 5 ?? 10 1 sec. temp:2705 time:101 sec ? / packaging spec. ?? / bulk package type ?? units ? dimension ?? (unit mm3) units/bag ? / bags/inner box / units/inner box ? / inner boxes/outer box / units/outer box ? / bag inner box outer box to-92 1,000 10 10,000 5 50,000 135190 237172102 560245195 1,000 10 10,000 10 100,000 135190 237172102 560245375 ? / ammo package type ?? units ? dimension ?? (unit mm3) units/tape ? / ? tape/inner box ? / rows/inner box ? / inner boxes/outer box / units/outer box ? / inner box outer box to-92 3,000 1 120 10 30,000 32823042 480346235 547407268 ?? / notices
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