RN739F diodes pin diode RN739F ! ! ! ! applications vhf / uhf band variable attenuators and agc ! ! ! ! features 1) multiple diodes in one small surface mount package. (umd3) 2) low high-frequency forward resistance (r f ) / low capacitance (c t ). 3) high reliability. ! ! ! ! construction silicon diffusion junction ! ! ! ! circuit ! ! ! ! external dimensions (units : mm) 2.1 0.1 1.25 0.1 0.1min. 0 ~ 0.1 0.15 0.05 0.3 0.1 2.0 0.2 1.3 0.1 0.65 0.65 0.9 0.1 0.3 0.6 rohm : umd3 eiaj : sc-70 jedec : sot-323 (all pins have the same dimensions) 5 f RN739F ! ! ! ! absolute maximum ratings (ta=25 c) parameter symbol limits unit dc reverse voltage v r 50 v dc forward current i f 50 ma power dissipation 100 mw junction temperature 125 c storage temperature tstg c tj ? 55~ + 125 pd ! ! ! ! electrical characteristics (ta=25 c) parameter symbol min. typ. max. unit conditions forward voltage v f ?? 1.0 v i f =50ma reverse current i r ?? 100 na v r =50v capacitance between terminals ?? 0.4 pf forward operating resistance r f ?? 7 ? i f =10ma, f=100mhz v r =35v, f=1mhz c t
RN739F diodes ! ! ! ! electrical characteristic curves (ta=25 c) 1m 10m 100m 0 0.5 1.0 75 c 125 c 25 c ? 25 c forward current : i f (a) forward voltage : v f (v) fig.1 forward characteristics 1n 0 10 20 30 40 50 60 70 1p 10p 100p 10n 100n 125 c 75 c 25 c 10 1 reverse current : i r (a) reverse voltage : v r (v) fig.2 reverse characteristics 10 20 30 0.1 0.2 0.3 0.4 0.5 0.7 1.0 reverse voltage : v r (v) f=1mhz f=10mhz capacitance between terminal : c t (pf) fig.3 capacitance between terminals characteristics 1 0.1 0.2 0.3 0.4 0.5 0.7 1.0 100 200 300 400 500 600 high frequency : f (mhz) v r =0v v r =3v capacitance between terminal : c t (pf) fig.4 capacitance between terminals characteristics 2 0.1 1.0 10 100 1.0 10 f=100mhz dynamic forward resistance : r f ( ? ) forward current : i f (ma) fig.5 high frequency characteristics f=10mhz f=1mhz 20 10 10 100 1000 dynamic forward resistance : r f ( ? ) forward current : f (mhz) i f =2ma fig.6 forward operating resistance characteristics 0 0 20 40 60 80 100 25 50 75 100 125 io current (%) ambient temperature : ta ( c) fig.7 derating curve (mounting on glass epoxy pcbs)
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