- 168 - MMBD4148 surface mount switching diode voltage range 75 volts 350m watts power dissipation features fast switching speed surface mount package ideally suited for automatic insertion for general purpose switching applications high conductance mechanical data case: sot-23, molded plastic terminals: solderable per miil-std-202, method 208 polarity: see diagram marking: ka6, ka2, k5d weight: 0.008 gram (approx. ) sot-23 dimensions in inches and (millimeters) maximum ratings and electrical characteristics rating at 25 ambient temperature unless otherwise specified. maximum ratings type number symbol value units non-repetitive peak reverse voltage vrm 100 v peak repetitive reverse voltage working peak reverse voltage dc blocking voltage vrrm vrwm vr 75 v rms reverse voltage vr(rms) 53 v forward continuous current ifm 300 ma average rectifier output current io 200 ma non-repetitive peak forward surge current @ t=1.0us @ t=1.0s ifsm 2.0 1.0 a power dissipation (note 1) pd 350 mw thermal resistance junction to ambient air r ja 357 o c/w operating and storage temperature range t j , t stg -65 to + 150 o c electrical characteristics type number symbol min max units reverse breakdown voltage (note 3) ir=100ua v(br) 75 v forward voltage if=1.0ma if= 10ma if = 50ma if=150ma vf - 0.715 0.855 1.0 1.25 v peak reverse current (note 3) vr=75v vr=75v, tj=150 vr=25v, tj=150 vr=20v ir - 1.0 50 30 25 ua na junction capacitance (note 3) vr=0, f=1.0mhz cj - 2.0 pf reverse recovery time (note 2) trr - 4.0 ns notes: 1. device mounted on glass epoxy pcb 1.6?x1.6?x0.06?, mounting pad for the cathode lead min. 0.93 inches. 2. reverse recovery test conditions: if=ir=10ma, irr=0.1 x ir, rl=100 3. short duration test pulse used to minimize self-heating effect. 0.020(0.51) 0.015(0.37) 0.055(1.40) 0.047(1.19) 0.098(2.50) 0.083(2.10) 0.024(0.61) 0.018(0.45) 0.007(0.178) 0.003(0.076) 0.024(0.61) 0.018(0.45) 0.080(2.05) 0.070(1.78) 0.041(1.05) 0.047(0.89) 0.120(3.05) 0.104(2.65) 0.006(0.15) 0.001(0.013) 0.043(1.10) 0.035(0.89)
ratings and characteristic curves ( MMBD4148) fig.1- power derating curve fig.2- typical fwd characteristics p , power dissip ation (mw) d 0 100 200 300 400 500 0 100 200 400 1000 1200 t , ambient temperature, ( c) a o i , leakage current (na) r v , instantaneous forward voltage (mv) f 0.1 see note 1 t = +150 c a o t = +125 c a o t = +75 c a o t = +25 c a o t = -25 c a o 600 800 10 100 1000 fig.3- typical reverse characteristics t , junction temperature ( c) j o i , instantaneous for ward current ( w) f v=75v r v = 20v r 0 50 100 150 200 0.0001 0.001 0.01 0.1 1 10 - 169 -
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