ds12019 rev. 6 - 2 1 of 2 1n4148 / 1n4448 www.diodes.com diodes incorporated features 1n4148 / 1n4448 fast switching diode fast switching speed general purpose rectification silicon epitaxial planar construction lead free finish, rohs compliant (note 2) characteristic symbol 1n4148 1n4448 unit non-repetitive peak reverse voltage v rm 100 v peak repetitive reverse voltage working peak reverse voltage dc blocking voltage v rrm v rwm v r 75 v rms reverse voltage v r(rms) 53 v forward continuous current (note 1) i fm 300 500 ma average rectified output current (note 1) i o 150 ma non-repetitive peak forward surge current @ t = 1.0s @ t = 1.0 s i fsm 1.0 2.0 a power dissipation (note 1) derate above 25 c p d 500 1.68 mw mw/ c thermal resistance, junction to ambient air (note 1) r ja 300 c/w operating and storage temperature range t j ,t stg -65 to +175 c maximum ratings @ t a = 25 c unless otherwise specified notes: 1. valid provided that device terminals are kept at ambient temperature. 2. ec directive 2002/95/ec (rohs) revision 13.2.2003. glass and high temperature solder exemptions applied where applicable, see eu directive annex notes 5 and 7 . characteristic symbol min max unit test condition maximum forward voltage 1n4148 1n4448 1n4448 v fm 0.62 1.0 0.72 1.0 v i f = 10ma i f = 5.0ma i f = 100ma maximum peak reverse current i rm 5.0 50 30 25 a a a na v r = 75v v r = 70v, t j = 150 c v r = 20v, t j = 150 c v r = 20v total capacitance c t 4.0 pf v r = 0, f = 1.0mhz reverse recovery time t rr 4.0 ns i f = 10ma to i r =1.0ma v r = 6.0v, r l = 100 electrical characteristics @ t a = 25 c unless otherwise specified features case: do-35 case material: glass moisture sensitivity: level 1 per j-std-020c leads: solderable per mil-std-202, method 208 terminals: finish sn96.5ag3.5. solderable per mil-std-202, method 208 polarity: cathode band marking: type number weight: 0.13 grams (approximate) mechanical data a a b c d do-35 dim min max a 25.40 b 4.00 c 0.60 d 2.00 all dimensions in mm
ds12019 rev. 6 - 2 2 of 2 1n4148 / 1n4448 www.diodes.com 1 10 100 1000 10,000 0 100 200 i , leakage current (na) r t , junction temperature ( c) fig. 2, leakage current vs junction temperature j v = 20v r 10 1.0 100 1000 0.1 0.01 0 0.4 0.8 1.2 1.6 2.0 i , instantane o us f o rward current (ma) f v , instantaneous forward voltage (v) fig. 1 forward characteristics f ordering information device packaging shipping 1n4148-a do-35 10k/ammo pack 1n4148-t do-35 10k/tape & reel, 13-inch 1N4448-A do-35 10k/ammo pack 1n4448-t do-35 10k/tape & reel, 13-inch notes: 3. for packaging details, visit our website at http://www.diodes.com/datasheets/ap02008.pdf. (note 3) important notice life support diodes incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes witho ut further notice to any product herein. diodes incorporated 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 patent 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 incorporated and all the companies whose products are represented on our website, harmless against all damages. diodes incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written appr oval of the president of diodes incorporated.
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