bas19w - bas21 w surface mount fast switching diode features ? fast switching speed ? surface mount package ideally suited for automated insertion ? for general purpose switching applications ? high conductance ? lead free/rohs compliant (note 3) ? qualified to aec-q101 standards for high reliability ? "green" device (notes 4 and 5) mechanical data ? case: sot-323 ? case material: molded plastic, "green" molding compound, note 5. ul flammability classification rating 94v-0 ? moisture sensitivity: level 1 per j-std-020d ? terminal connections: see diagram ? terminals: solderable per mil-std-202, method 208 ? lead free plating (matte tin finish annealed over alloy 42 leadframe) ? bas19w marking: ka8 or kt2 or kt3 (see page 2) ? bas20w marking: kt2 or kt3 (see page 2) ? bas21w marking: kt3 (see page 2) ? weight: 0.006 grams (approximate) sot-323 internal schematic top view top view maximum ratings @t a = 25c unless otherwise specified characteristic symbol bas19w bas20w bas21w unit repetitive peak reverse voltage v rrm 120 200 250 v working peak reverse voltage dc blocking voltage v rwm v r 100 150 200 v rms reverse voltage v r(rms) 71 106 141 v forward continuous current (note 1) i fm 400 ma average rectified output current (note 1) i o 200 ma non-repetitive peak forward surge current @ t = 1.0 s @ t = 1.0s i fsm 2.5 0.5 a repetitive peak forward surge current i frm 625 ma thermal characteristics characteristic symbol value unit power dissipation p d 200 mw thermal resistance junction to ambient air (note 1) r ja 625 c/w operating and storage temperature range t j , t stg -65 to +150 c electrical characteristics @t a = 25c unless otherwise specified characteristic symbol min max unit test condition reverse breakdown voltage (note 2) bas19w bas20w bas21w v (br)r 120 200 250 ? ? ? v i r = 100 a forward voltage v f ? 1.0 1.25 v i f = 100ma i f = 200ma reverse current @ rated dc blocking voltage (note 2) i r ? 100 15 na a t j = 25 c t j = 100 c total capacitance c t ? 5.0 pf v r = 0, f = 1.0mhz reverse recovery time t rr ? 50 ns i f = i r = 30ma, i rr = 0.1 x i r , r l = 100 notes: 1. part mounted on fr-4 pc board with minimum recommended pad layout, which can be found on our website at http://www.di odes.com/datashe ets/ap02001.pdf. 2. short duration pulse test used to minimize self-heating effect. 3. no purposefully added lead. 4. diodes inc.'s "green" policy can be found on our w ebsite at http://www.diodes.com /products/lead_free/index.php. 5. product manufactured with date code 0627 (week 27, 2006) and newer are built with green molding compound. product manufact ured prior to date code 0627 are built with non-green molding compound and may contain halogens or sb 2 o 3 fire retardants. bas19w - bas21w document number: ds30118 rev. 13 - 2 1 of 3 www.diodes.com march 2008 ? diodes incorporated
bas19w - bas21 w bas19w - bas21w document number: ds30118 rev. 13 - 2 2 of 3 www.diodes.com march 2008 ? diodes incorporated 01 0 02 0 0 250 200 150 50 100 0 t , ambient temperature ( c) fig. 1 power derating curve a 0.001 0.01 0.1 1 0 0.40.2 0. 6 i , ins t an t ane o u s f o r wa r d c u r r en t (a) f v , instantaneous forward voltage (v) fig. 2 typical forward characteristics f 0.8 1.21.0 1.4 note 1 p , p o we r dissi p a t i o n (mw) d 0.0001 0.01 0.001 0.1 1 10 100 050100 200 150 250 v , instantaneous reverse voltage (v) fig. 3 typical reverse characteristics r 0.0 0.5 1.0 1.5 3.5 3.0 2.5 2.0 4.0 0 10 20 40 30 c , t o t al c a p a c i t an c e (p f ) t v , dc reverse voltage (v) fig. 4 total capacitance vs. reverse voltage r ordering information (notes 5 & 6) part number case packaging bas19w-7-f sot-323 3000/tape & reel bas20w-7-f sot-323 3000/tape & reel bas21w-7-f sot-323 3000/tape & reel notes: 6. for packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf . marking information xxx ym xxx = product type marking code (see page 1) ym = date code marking y = year ex: n = 2002 m = month ex: 9 = september date code key year 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 code l m n p r s t u v w x y z month jan feb mar apr may jun jul aug sep oct nov dec code 1 2 3 4 5 6 7 8 9 o n d
bas19w - bas21 w package outline dimensions bas19w - bas21w document number: ds30118 rev. 13 - 2 3 of 3 www.diodes.com march 2008 ? diodes incorporated suggested pad layout important notice diodes incorporated and its subsidiaries rese rve the right to make modifications, enhanc ements, improvements, corrections or ot her changes without further notice to any product herein. diodes incorporat ed does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its paten t rights, nor the rights of others. the user of products in such applications shall assume all risks of such use and will agree to hold diodes inco rporated and all the companies whose products ar e represented on our website, harmless against all damages. life support diodes incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the president of diodes incorporated. a m j l d f b c h k g top view sot-323 dim min max a 0.25 0.40 b 1.15 1.35 c 2.00 2.20 d 0.65 nominal f 0.30 0.40 g 1.20 1.40 h 1.80 2.20 j 0.0 0.10 k 0.90 1.00 l 0.25 0.40 m 0.10 0.18 0 8 all dimensions in mm x e g y c z dimensions value (in mm) z 2.8 g 1.0 x 0.7 y 0.9 c 1.9 e 0.65
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