document number: 93255 for technical ques tions, contact: diodes-tech@vishay.com www.vishay.com revision: 06-nov-08 1 schottky rectifier, 1.0 a 1n5817 vishay high power products features ? low profile, axial leaded outline ? high frequency operation ? very low forward voltage drop ? high purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance ? guard ring for enhanced ruggedness and long term reliability ? lead (pb)-free plating ? designed and qualified for industrial level description the 1n5817 axial leaded schottky rectifier has been optimized for very low forwar d voltage drop, with moderate leakage. typical applications are in switching power supplies, converters, freewheeling diodes, and reverse battery protection. product summary i f(av) 1.0 a v r 20 v i rm 10 ma at 100 c do-204al cathode anode major ratings and characteristics symbol characteristics values units i f(av) rectangular waveform 1.0 a v rrm 20 v i fsm t p = 5 s sine 240 a v f 1 apk, t j = 25 c 0.45 v t j range - 65 to 150 c voltage ratings parameter symbol 1n5817 units maximum dc reverse voltage v r 20 v maximum working peak reverse voltage v rwm absolute maximum ratings parameter symbol test conditions values units maximum average forward current i f(av) 50 % duty cycle at t l = 138 c, rectangular waveform 1.0 a maximum peak one cycle non-repetitive surge current at t j = 25 c i fsm 5 s sine or 3 s rect. pulse following any rated load condition and with rated v rrm applied 240 10 ms sine or 6 ms rect. pulse 40
www.vishay.com for technical questi ons, contact: diodes-tech@vishay.com document number: 93255 2 revision: 06-nov-08 1n5817 vishay high power products schottky rectifier, 1.0 a note (1) pulse width < 300 s, duty cycle < 2 % note (1) thermal runaway condition for a diode on its own heatsink electrical specifications parameter symbol test conditions typ. max. units maximum forward voltage drop v fm (1) 1 a t j = 25 c 0.42 0.45 v 3 a 0.50 0.75 maximum reverse leakage current i rm (1) t j = 25 c v r = rated v r 0.012 1.0 ma t j = 100 c 2.0 10 typical junction capacitance c t v r = 5 v dc (test signal range 100 khz to 1 mhz), 25 c 110 - pf typical series inductance l s measured lead to lead 5 mm from package body 8.0 - nh maximum voltage rate of change dv/dt rated v r - 10 000 v/s thermal - mechanical specifications parameter symbol test conditions values units maximum junction and storage temperature range t j (1) , t stg - 65 to 150 c maximum thermal resistance, junction to lead r thjl dc operation lead length = 1/8" 32 c/w maximum thermal resistance, junction to ambient r thja dc operation without cooling fin 100 approximate weight 0.33 g 0.012 oz. marking device case style do-204al (do-41) 1n5817 dp tot dt j ------------- 1 r thja -------------- <
document number: 93255 for technical ques tions, contact: diodes-tech@vishay.com www.vishay.com revision: 06-nov-08 3 1n5817 schottky rectifier, 1.0 a vishay high power products fig. 1 - maximum forward voltage drop characteristics fig. 2 - typical peak reverse current vs. reverse voltage fig. 3 - typical junction capacitance vs. reverse voltage fig. 4 - maximum average forward current vs. allowable lead temperature fig. 5 - maximum averag e forward dissipation vs. average forward current note (1) formula used: t c = t j - (pd + pd rev ) x r thjc ; pd = forward power loss = i f(av) x v fm at (i f(av) /d) (see fig. 6); pd rev = inverse power loss = v r1 x i r (1 - d) instantaneous forward current - i f (a) forward voltage drop - v fm (v) 0.1 1 10 100 0 0.2 0.4 0.6 0.8 1 tj = 150?c tj = 125?c tj = 25?c reverse voltage - v r (v) reverse current - i r (ma) 0.0001 0.001 0.01 0.1 1 10 100 0 5 10 15 20 125?c 100?c 75?c 50?c 25?c tj = 150?c reverse voltage - v r (v) junction capacitance - c t (pf) 10 100 1000 05101520 tj = 25?c average forward current - i f(av) (a) allowable lead temperature (?) 130 135 140 145 150 0 0.4 0.8 1.2 1.6 dc see note (1) square wave (d = 0.5) average forward current - i f(av) (a) allowable power loss (watts) 0 0.1 0.2 0.3 0.4 0.5 0 0.4 0.8 1.2 1.6 dc rms limit d = 0.20 d = 0.25 d = 0.33 d = 0.50 d = 0.75
www.vishay.com for technical questi ons, contact: diodes-tech@vishay.com document number: 93255 4 revision: 06-nov-08 1n5817 vishay high power products schottky rectifier, 1.0 a fig. 6 - maximum peak surge forward current vs. pulse duration ordering information table square wave pulse duration - t p (microsec) non-repetitive surge current - i fsm (a) 10 100 1000 10 100 1000 10000 tj = 25?c 1 - part number: 1 a, 20 v 2 - tr = tape and reel package (5000 pcs) none = box package (1000 pcs) device code 12 1n5817 tr links to related documents dimensions http://www.vishay.com/doc?95241 part marking information http://www.vishay.com/doc?95304 packaging information http://www.vishay.com/doc?95308
document number: 95241 for tec hnical questions, contact: indmodules@vishay.com www.vishay.com revision: 22-nov-07 1 axial do-204al (do-41) outline dimensions vishay semiconductors dimensions in millimeters (inches) 2.70 (0.106) 2.29 (0.090) dia. 2.70 (0.106) 2.29 (0.090) dia. 0.86 (0.034) 0.72 (0.028) (2 places) 27.0 (1.06) min. (2 places) 5.21 (0.205) max. 5.21 (0.205) max. 27.0 (1.06) min. (2 places) 1.27 (0.050) max. flash (2 places) dia. 0.86 (0.034) 0.72 (0.028) (2 places) dia. cathode band
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