b-16 01/99 2n4856a, 2n4857a, 2n4858a, 2n4859a, 2n4860a, 2n4861a n-channel silicon junction field-effect transistor choppers commutators analog switches absolute maximum ratings at t a = 25?c 2n4856a, 2n4857a, 2n4858a 2n4859a, 2n4860a, 2n4861a reverse gate source voltage C 40 v C 30 v reverse gate drain voltage C 40 v C 30 v continuous device dissipation 1.8 w 1.8 w continuous forward gate current 50 ma 50 ma power derating 10 ma/c 10 ma/c toe18 package see section g for outline dimensions pin configuration 1 source, 2 drain, 3 gate & case surface mount smp4856a, SMP4857A, smp4858a, smp4859a, smp4860a, smp4861a 2n4856a 2n4857a 2n4858a at 25c free air temperature: 2n4859a 2n4860a 2n4861a process nj132 static electrical characteristics min max min max min max unit test conditions gate source breakdown voltage v (br)gss C 40 C 40 C 40 v i g = C 1 a, v ds = ? v 2n4856a, 2n4857a, 2n4858a gate source breakdown voltage v (br)gss C 30 C 30 C 30 v i g = C 1 a, v ds = ? v 2n4859a, 2n4860a, 2n4861a gate reverse current i gss C 250 C 250 C 250 pa v gs = C 20 v, v ds = ? v 2n4856a, 2n4857a, 2n4858a C 500 C 500 C 500 na v gs = C 20 v, v ds = ? v t a = 150c gate reverse current i gss C 250 C 250 C 250 pa v gs = C 15v, v ds = ? v 2n4859a, 2n4860a, 2n4861a C 500 C 500 C 500 na v gs = C 15v, v ds = ? v t a = 150c gate source cutoff voltage v gs(off) C 4 C 10 C 2 C 6 C 0.8 C 4 v v ds = 15v, i d = 0.5 na drain saturation current (pulsed) i dss 50 20 100 8 80 ma v ds = 15v, v gs = ? v drain cutoff current i d(off) 250 250 250 pa v ds = 15v, v gs = C 10v 500 500 500 na v ds = 15v, v gs = C 10v t a = 150c drain source on voltage v ds(on) 0.75 0.5 0.5 v v gs = ? v, i d = ( ) (20) (10) (5) (ma) dynamic electrical characteristics common source on resistance r ds(on) 25 40 60 v gs = ? v, i d = ? a f = 1 khz common source input capacitance c iss 10 10 10 pf v ds = ? v, v gs = C 10 v f = 1 mhz common source reverse c rss 4 3.5 3.5 pf v ds = ? v, v gs = C 10 v f = 1 mhz transfer capacitance switching characteristics 568ns turn on delay time t d(on) (20) (10) (5) (ma) [C10] [C 6] [C 4] [v] v dd = 10 v, v gs = ? v 348ns i d(on) = ( ) rise time t r (20) (10) (5) (ma) v gs(off) = [ ] [C10] [C 6] [C 4] [v] (2n4856a, 2n4859a) r l = 464 25 40 80 ns (2n4857a, 2n4860a) r l = 953 turn off delay time t d(off) (20) (10) (5) (ma) (2n4858a, 2n486a1) r l = 1910 [C10] [C 6] [C 4] [v] 1000 n. shiloh road, garland, tx 75042 (972) 487-1287 fax (972) 276-3375 www.interfet.com databook.fxp 1/14/99 12:00 pm page b-16
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