b-62 01/99 j310 n-channel silicon junction field-effect transistor mixer oscillator vhf/uhf amplifier absolute maximum ratings at t a = 25?c reverse gate source voltage C 25 v reverse gate drain voltage C 25 v continuous forward gate current 10 ma continuous device power dissipation 360 mw toe226aa package dimensions in inches (mm) pin configuration 1 drain, 2 source, 3 gate surface mount SMPJ310 at 25c free air temperature: j310 process nj72 static electrical characteristics min typ max unit test conditions gate source breakdown voltage v (br)gss C 25 v i g = C 1 a, v ds = ? v gate reverse current i gss C 1 na v gs = C 15 v, v ds = ?v C 1 a v gs = C 15 v, v ds = ?v t a = + 125c gate source cutoff voltage v gs(off) C 2 C 6.5 v v ds = 10 v, i d = 1 na gate source forward voltage v gs(f) 1vv ds = ? v, i g = 1 ma drain saturation current (pulsed) i dss 24 60 ma v ds = 10 v, v gs = ? v dynamic electrical characteristics common source forward transconductance g fs 8000 17000 s v ds = 10 v, i d = 10 ma f = 1 khz common source output conductance g os 250 s v ds = 10 v, i d = 10 ma f = 1 khz common gate forward transconductance g fg 1200 s v ds = 10 v, i d = 10 ma f = 1 khz common gate output transconductance g og 150 s v ds = 10 v, i d = 10 ma f = 1 khz gate drain capacitance c dg 1.8 2.5 pf v ds = ? v, v gs = C 10 v f = 1 mhz gate source capacitance c gs 45pfv ds = ? v, v gs = C 10 v f = 1 mhz equivalent short circuit e n 10 nv/ hz v ds = 10 v, i d = 10 ma f = 100 hz input noise voltage common source forward transconductance re (y fs )12sv ds = 10 v, i d = 10 ma f = 105 mhz common gate input conductance re (y ig )14sv ds = 10 v, i d = 10 ma f = 105 mhz common source input conductance re (y is ) 0.4 s v ds = 10 v, i d = 10 ma f = 105 mhz common source output conductance re (g os ) 0.15 s v ds = 10 v, i d = 10 ma f = 105 mhz common gate power gain g pg 16 db v ds = 10 v, i d = 10 ma f = 105 mhz at noise match 11 db v ds = 10 v, i d = 10 ma f = 450 mhz noise figure nf 1.5 db v ds = 15 v, i d = 10 ma f = 105 mhz 2.7 db v ds = 15 v, i d = 10 ma f = 450 mhz 1000 n. shiloh road, garland, tx 75042 (972) 487-1287 fax (972) 276-3375 www.interfet.com databook.fxp 1/13/99 2:09 pm page b-62
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