MM4148-LFR page: 1 frontier electronics corp. 667 e. cochran street, simi valley, ca 93065 tel: (805) 522-9998 fax: (805) 522-9989 e-mail: frontiersales@frontierusa.com web: http://www.frontierusa.com mini melf silicon epitaxial planar diode MM4148-LFR features z fast switching z mini melf size z rohs mechanical data z case: glass, do-213aa (gl34), dimensions in millimeters , z leads: solderable per mil-std-202,method 208 z polarity: cathode indicated by color band z weight: 0.036 grams ratings symbol MM4148-LFR units reverse voltage v r 75 v peak reverse voltage v rm 100 v rectified current average half wave rectification with resist load at t amb 25 and f R 50hz note 1 i o 150 ma surge forward current at t 1 s and t j 25 i fsm 500 ma power dissipation at t amb =25 p tot 500 mw junction temperature t j 200 storage temperature range t s - 55 to + 200 characteristics t j =25 symbol min typ max units forward voltage at i f =10ma v f - - 1 v leakage current at v r =20v at v r =75v at v r =20v t j =150 i r i r i r - - - - - - 25 5 50 na a a reverse breakdown voltage tested with 100 a pulses v r 100 - - v capacitance at v f =v r =0 c tot - - 4 pf voltage rise when switching on tested with 50ma forward pulses tp=0.1 s rise time 30ns f p =5 to 100 khz v fr - - 2.5 v reverse recovery time from i f =10ma to i r =1ma v r =6v r l =100 t rr - - 4 ns thermal resistance junction to ambient air note 1 r tha - - 0.35 k / mw rectification efficiency at f=100 mhz v rf =2v v 0.45 - - - note: 1. leads kept at ambient temp. solderable ends 1 . 4 5 0. 1 5 3.5 0.15
MM4148-LFR page: 2 ratings and characteristic curve MM4148-LFR fig. 3-admissible power dissipation versus ambient temperature valid provided that leads at a distance of 8mm from case are kept at ambient temperature mw 1000 900 800 700 600 500 400 300 200 100 0 ptot 0 100 200 o c tamb tj=100 o c fig. 1-forward characteristic ma 10 3 10 2 10 1 10 -1 10 -2 i f 0 1 2 v f tj=25 o c fig. 4-relative capacitance versus reverse voltage 0 2 4 6 8 10 v r 1.1 1.0 0.9 0.8 0.7 ctot(v r ) ctot(0v) tj=25 o c f=1mhz 10 -2 10 -1 1 10 10 2 ma i f 10 4 5 2 10 3 5 2 10 2 5 2 10 5 2 1 fig. 2-dynamic forward resistance versus forward current tj=25 o c f=1khz r f
MM4148-LFR page: 3 ratings and characteristic curve mm4148-lf fig. 5-leakage current versus junction temperature 0 100 200 o c tj na 10 4 5 2 10 3 5 2 10 2 5 2 10 5 2 1 i r fig. 6-admissible repetiti ve peak forward current versus pulse duration valid provided that leads at a distance of 8mm from case are kept at ambient temperature a 100 5 4 3 2 10 5 4 3 2 1 5 4 3 2 0.1 10 -5 2 5 10 -4 2 5 10 -3 2 5 10 -2 2 5 10 -1 2 5 1 2 5 10 s tp i frm =0 0.1 0.2 0.5 = tp /t t=1/ fp tp i frm i t t
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