2SK1958 the 2SK1958 is an n-channel vertical mos fet. because it can be driven by a voltage as low as 1.5 v and it is not necessary to consider a drive current, this fet is ideal as an actuator for low-current portable systems such as headphone stereos and video cameras. features ? gate can be driven by 1.5 v ? because of its high input impedance, theres no need to consider drive current ? since bias resistance can be omitted, the number of components required can be reduced absolute maximum ratings (t a = 25 ?c) parameter symbol test conditions rating unit drain to source voltage v dss v gs = 0 16 v gate to source voltage v gss v ds = 0 7.0 v drain current (dc) i d(dc) 0.1 a drain current (pulse) i d(pulse) pw 10 ms, duty cycle 50 % 0.2 a total power dissipation p t 150 mw channel temperature t ch 150 ?c storage temperature t stg C55 to +150 ?c package dimensions (in mm) marking: g21 1.25 ?.1 2.1 ?.1 d 0.3 +0.1 ? 0.3 +0.1 ? g s 2.0 ?.2 0.65 0.65 0.15 +0.1 ?.05 0 to 0.1 0.3 0.9 ?.1 marking equivalent curcuit source (s) internal diode gate protection diode gate (g) drain (d) pin connections s: d: g: source drain gate product specification 1 of 2 4008-318-123 sales@twtysemi.com http://www.twtysemi.com
electrical characteristics (t a = 25 ?c) parameter symbol test conditions min. typ. max. unit drain cut-off current i dss v ds = 16 v, v gs = 0 1.0 m a gate leakage current i gss v gs = 7.0 v, v ds = 0 3.0 m a gate cut-off voltage v gs(off) v ds = 3 v, i d = 10 m a 0.5 0.8 1.1 v forward transfer admittance |y fs |v ds = 3 v, i d = 10 ma 20 ms drain to source on-state resistance r ds(on)1 v gs = 1.5 v, i d = 1 ma 20 50 w drain to source on-state resistance r ds(on)2 v gs = 2.5 v, i d = 10 ma 7 15 w drain to source on-state resistance r ds(on)3 v gs = 4.0 v, i d = 10 ma 5 12 w input capacitance c iss v ds = 3 v, v gs = 0, f = 1.0 mhz 10 pf output capacitance c oss 13 pf reverse transfer capacitance c rss 3pf turn-on delay time t d(on) v dd = 3 v, i d = 10 ma, v gs(on) = 3 v, 15 ns rise time t r r g = 10 w , r l = 300 w 70 ns turn-off delay time t d(off) 100 ns fall time t f 110 ns 2SK1958 product specification 2 of 2 4008-318-123 sales@twtysemi.com http://www.twtysemi.com
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