pb-free package is available the schottky power rectifier employs the schottky barrier principle with a barrier metal that produces optimal forward voltage dropreverse current tradeoff. ideally suited for low voltage, high frequency rectification, or as 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. these stateoftheart devices have the following features: ? guardring for stress protection ? very low forward voltage (0.38 v max @ 0.5 a, 25 c) ? 125 c operating junction temperature ? epoxy meets ul94, vo at 1/8 ? package designed for optimal automated board assembly mechanical characteristics ? reel options: LMBR0520T1G = 3,000 per 7 reel / 8 mm tape. reel options: lmbr0520t3g = 10,000 per 13 reel / 8 mm tape. ? device marking: b2 ? 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 maximum ratings rating symbol value unit peak repetitive reverse voltage working peak reverse voltage dc blocking voltage v rrm v rwm v r 20 volts average rectified forward current (rated v r ) t l = 90 c i f(av) 0.5 amps nonrepetitive peak surge current (surge applied at rated load conditions halfwave, single phase, 60 hz) i fsm 5.5 amps storage temperature t stg 65 to +125 c operating junction temperature t j 65 to +125 c voltage rate of change (rated v r ) dv/dt 1000 v/ m s thermal characteristics thermal resistance e junction to ambient (1) r q ja 340 c/w thermal resistance e junction to lead r q jl 150 c/w electrical characteristics maximum instantaneous forward volta g e ( 2 ) v f t j = 25 c t j = 100 c volts maximum instantaneous forward v oltage (2) (i f = 0.1 amps) (i f = 0.5 amps) 0.300 0.385 0.220 0.330 maximum instantaneous reverse current ( 2 ) i r t j = 25 c t j = 100 c ma maximum instantaneous reverse current (2) (v r = 10 v) (rated dc voltage = 20 v) 75 m a 250 m a 5 ma 8 ma (1) fr4 or fr5 = 3.5 x 1.5 inches using the motorola minimum recommended footprint. (2) pulse test: pulse width = 300 m s, duty cycle 2%. sod123 leshan radio company, ltd. LMBR0520T1G surface mount schottky power rectifier rev.o 1/3
i r , reverse current ( a) m 1 0.1 0.01 0.1 0.2 0.3 0.4 0.5 i f , instantaneous forward current (amps) t j = 100 c 75 c 25 c 25 c v f , instantaneous forward voltage (volts) figure 1. typical forward voltage 10,000 1000 100 010152025 75 c v r , reverse voltage (volts) figure 2. typical reverse current 5 200 0 v r , reverse voltage (volts) figure 3. typical capacitance 5 10152025 150 100 0 c, capacitance (pf) 50 10 1 0.01 0 10152025 v r , reverse voltage (volts) figure 4. typical reverse current 5 100 0.1 25 c t j = + 25 c 1 0.875 0 lead temperature ( c) figure 5. current derating (lead) 67 0.75 0.625 0.5 60 0.125 0.25 0.375 dc = p = square wave 10 74 81 88 average forward current (amp) 0.35 0.315 0 i f(av) , average forward current (amp) figure 6. power dissipation 0.125 0.28 0.245 0.21 0 0.105 0.14 0.175 dc square wave p 5 10 0.035 0.07 0.25 0.375 0.5 0.625 0.75 0.875 1 p f(av) , average power dissipation (watt) 102 95 109 116 123 130 20 t j = 125 c i pk i av 20 5 i pk i av t j = 100 c i r , reverse current ( a) m leshan radio company, ltd. LMBR0520T1G rev.o 2/3
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. LMBR0520T1G rev.o 3/3
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