pb-free package is available sod123 leshan radio company, ltd. 1/3 surface mount schottky power rectifier LMBR0540T1G the schottky power rectifier employs the schottky barrier principle with a barrier metal that produces optimal forward voltage drop?reverse current tradeoff. ideally suited for low voltage, high frequency rectification, or as a free wheeling and polarity protection diodes in surface mount applications where compact size and weight are critical to the system. this package provides an alternative to the leadless 34 melf style package. features ? guardring for stress protection ? very low forward voltage ? epoxy meets ul 94 v?0 @ 0.125 in ? package designed for optimal automated board assembly ? mechanical characteristics ? reel options:LMBR0540T1G= 3,000 per 7 inch reel/8 mm tape lmbr0540t3g=10,000 per 13 inch reel/8 mm tape ? device marking: b4 ? polarity designator: cathode band ? weight: 11.7 mg (approximately) ? case: epoxy molded ? finish: all external surfaces corrosion resistant and terminal leads are readily solderable ? lead and mounting surface temperature for soldering purposes: 260 c max. for 10 seconds we declare that the material of product compliance with rohs requirements. 1 cathode 2 anode rev.o 1/5
leshan radio company, ltd. maximum ratings rating symbol value unit peak repetitive reverse voltage working peak reverse voltage dc blocking voltage v rrm v rwm v r 40 v average rectified forward current (at rated v r , t c = 115 c) i o 0.5 a peak repetitive forward current (at rated v r , square wave, 20 khz, t c = 115 c) i frm 1.0 a non?repetitive peak surge current (surge applied at rated load conditions halfwave, single phase, 60 hz) i fsm 5.5 a storage/operating case temperature range t stg , t c ?55 to +150 c operating junction temperature t j ?55 to +150 c voltage rate of change (rated v r , t j = 25 c) dv/dt 1000 v/ s maximum ratings are those values beyond which device damage can occur. maximum ratings applied to the device are individual str ess limit values (not normal operating conditions) and are not valid simultaneously. if these limits are exceeded, device functional operation i s not implied, damage may occur and reliability may be affected. thermal characteristics rating symbol value unit thermal resistance ? junction?to?lead (note 1) thermal resistance ? junction?to?ambient (note 2) r tjl r tja 118 206 c/w electrical characteristics maximum instantaneous forward voltage (note 3) v f t j = 25 c t j = 100 c v (i f = 0.5 a) (i f = 1 a) 0.5 5 0.6 5 0. 53 0.6 3 maximum instantaneous reverse current (note 3) i r t j = 25 c t j = 100 c a (v r = 40 v) (v r = 20 v) 20 10 13,000 5,000 1. mounted with minimum recommended pad size, pc board fr4. 2. 1 inch square pad size (1 x 0.5 inch for each lead) on fr4 board. 3. pulse test: pulse width 250 s, duty cycle 2.0%. LMBR0540T1G rev.o 2/5
leshan radio company, ltd. 0.2 10 1.0 0.1 0.6 1.2 0.4 0.8 1.0 figure 1. typical forward voltage figure 2. maximum forward voltage figure 3. typical reverse current figure 4. maximum reverse current 0.2 v f , instantaneous forward voltage (volts) 10 1.0 v f , maximum instantaneous forward voltage (volts) 40 0 v r , reverse voltage (volts) 100e?3 1.0e?3 100e?6 10e?6 1.0e?6 100e?9 v r , reverse voltage (volts) i f , instantaneous forward current (amps) i 0.1 0.6 1.2 0.4 0.8 10 20 30 i f , instantaneous forward current (amps) , reverse current (amps) r 40 0 i 10 20 30 , maximum reverse current (amps) r t j = 125 c t j = 100 c t j = ?40 c t j = 25 c t j = 125 c t j = 100 c t j = 25 c t j = 125 c t j = 100 c t j = 25 c t j = 100 c t j = 25 c 100 1.0 10e?3 100e?3 1.0e?3 100e?6 10e?6 1.0e?6 100e?9 10e?3 25 c LMBR0540T1G rev.o 3/5
figure 5. current derating figure 6. forward power dissipation 20 60 0 t l , lead temperature ( c) 0.8 0.4 0.3 0.2 0.1 0 i o , average forward current (amps) 0.1 0 0.45 0.40 0.35 0.15 0.05 0 0.4 40 , average forward current (amps) i o 80 120 100 0.5 0.2 0.3 0.5 0.8 0.10 p fo , average power dissipation (watts) 140 0.6 square wave dc i pk /i o = i pk /i o = 5 i pk /i o = 10 i pk /i o = 20 i pk /i o = 20 i pk /i o = 10 i pk /i o = 5 i pk /i o = square wave dc 0.7 0.30 0.20 0.25 0.6 0.7 freq = 20 khz figure 7. capacitance figure 8. typical operating temperature derating * 30 0 v r , reverse voltage (volts) 100 10 v r , dc reverse voltage (volts) 25 40 0 118 114 112 110 c, capacitance (pf) t 15 5.0 10 20 25 35 40 30 35 5.0 10 20 15 116 120 126 , derated operating temperature ( c) j * reverse power dissipation and the possibility of thermal runaway must be considered when operating this device under any reverse voltage conditions. calculations of t j therefore must include forward and reverse power effects. the allowable operating t j may be calculated from the equation: t j = t jmax ? r(t)(pf + pr) where r(t) = thermal impedance under given conditions, pf = forward power dissipation, and pr = reverse power dissipation this graph displays the derated allowable t j due to reverse bias under dc conditions only and is calculated as t j = t jmax ? r(t)pr, where r(t) = rthja. for other power applications further calculations must be performed. r tja = 118 c/w 180 c/w 149 c/w 206 c/w 228 c/w t j = 25 c 122 124 leshan radio company, ltd. LMBR0540T1G rev.o 4/5
package dimensions sod123 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. style 1: pin 1. cathode 2. anode aaa aaa b d k a c e j 1 2 h dim min max min max millimeters inches a 0.055 0.071 1.40 1.80 b 0.100 0.112 2.55 2.85 c 0.037 0.053 0.95 1.35 d 0.020 0.028 0.50 0.70 e 0.004 0.25 h 0.000 0.004 0.00 0.10 j 0.006 0.15 k 0.140 0.152 3.55 3.85 recommended footprint for sod123 sod123 mm inches 0.91 0.036 1.22 0.048 2.36 0.093 4.19 0.165 leshan radio company, ltd. LMBR0540T1G rev.o 5/5
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