ultrafast rectifiers, high efficiency, 50a tm microsem i scottsdale division 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941 - 6300, fax: (480) 947 - 1503 page 1 copyright ? 2003 02 - 03 - 2003 rev 0 www. microsemi . com scottsdale division ues804 ues804hr2 ues805 ues805hr2 ues806 UES806HR2 description appearance the ues804 series of ultrafast high - efficiency rectifiers is specifically designed for operation in power switching circuits operating at frequencies of 20 khz or higher. these devices have demonstrated capability in passing power - stress testing to 25 thousand cycles with full - rated forward current turned on and off without a heat sink. this forces case temperature increases of 75 c at which time the current is removed to simulate worst case applications. the switching tim es increase relatively little with temperature or at different currents. do - 5 important: for the most current data, consult microsemi?s website: http://www.microsemi.com features applicatio ns / benefits very low forward voltage very fast recovery times high reliability screening options with hr2 suffix (ie. ues804hr2) low thermal resistance mechanically rugged standard polarity is cathode to case. for reverse polarity, add suffix r (ie. ues804r) power switching circuits 20 khz and above with minimal parasitic switching losses catch diodes for switching regulators output rectifiers for high frequency square - wave inverters extremely robust in power cycling high surge capability hermetical ly sealed absolute maximum ratings mechanical and packaging peak inverse voltage, ues804, ues804hr2???.200 v peak inverse voltage, ues805, ues805hr2???.300 v peak inverse voltage, ues806, UES806HR2???.400 v average dc output current, i o @ t c = 100 o c ???50 a surge current, 8.3 ms ?????????????600 a thermal resistance, junction to case?????0.8 o c /w operating and storage temp. range??. - 55 o c to +150 o c industry standard do - 5 (do - 203ab) package with 11/16 inch hex and 1/4 - 28 threaded stud hermetically se aled metal and glass case body metal surface finish: tin plated weight: 15.5 grams (approximate) maximum unlubricated stud torque: 15 inch pounds angular orientation of terminal is undefined marking: part number and logo electrical characteristics microsemi part number working peak reverse voltage v rwm maximum forward voltage v f @ 50 a t p = 300 m s maximum reverse current i r @ v rwm maximum reverse recovery time* t rr t c = 25 o c t c = 125 o c t c = 25 o c t c = 125 o c ues804 ues805 ues806 ues804hr2 ues805hr2 UES806HR2 200 v 300 v 400 v 1.25 v 1.15 v 70 m a 30 ma 50 ns * measured in circuit i f = 0.5 a, i r = 1 a, i rec = 0.25 a ues704 series
ultrafast rectifiers, high efficiency, 50a tm microsem i scottsdale division 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941 - 6300, fax: (480) 947 - 1503 page 2 copyright ? 2003 02 - 03 - 2003 rev 0 www. microsemi . com scottsdale division ues804 ues804hr2 ues805 ues805hr2 ues806 UES806HR2 graphs and circuit ues704 series i fsm - current (a)
ultrafast rectifiers, high efficiency, 50a tm microsem i scottsdale division 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941 - 6300, fax: (480) 947 - 1503 page 3 copyright ? 2003 02 - 03 - 2003 rev 0 www. microsemi . com scottsdale division ues804 ues804hr2 ues805 ues805hr2 ues806 UES806HR2 optional high reliability (hr2) screening the following tests are perf ormed on 100% of the devices. mechanical specifications inches millimeters a .225 +/ - .005 5.72 +/ - 0.13 b .060 min. 1.52 min. c .156 +/ - .020 3.96 +/ - 0.51 d .156 min. flat 3.96 min. flat e .667 dia. max 16.94 dia. max f .090 max 2.29 max. g .677 +/ - .010 17.20 +/ - 0.25 h .375 max. 9.53 max. j .140 min. dia. 3.56 min. dia. k 1.000 max. 25.40 max. l .450 max. 11.43 max. m .438 +/ - .015 11.13 +/ - 0.38 n .078 max. 1.98 max. screen mil - std - 750 method conditions 1. high temperature 1032 24 hours @ ta = 150 o c 2. temperature cycle 1051 f, 20 cycles, - 55 to +150 o c . no dwell required @ 25 o c , t > 10 min. @ extremes 3. hermetic seal a. fine leak b. gross leak 1071 h, helium c, liquid 4. thermal impedance 3101 5. interim electrical parameters go/no go as applicable 6. high temperature reverse blocking as applicable t= 48 hours, tc = 125c with applicable bias conditions 7. final electrical param eters go/no go as applicable notes: 1. oscilloscope: rise time 3ns; input impedance = 50 w . 2. pulse generator: rise t ime 8ns; source impedance 10 w . 3. current viewing resistor, non - inductive, coaxial recommended. ues704 series notes: 1. cathode is stud 2. maximum unlubricated stud torque: 30 inch pounds. 3. angular orientation of terminal is undefined. 4. maximum tension (90 o ) anode terminal 15 pounds for 30 seconds
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