* Copyright © Linear Technology Corp. 1998, 1999, 2000. All rights reserved. * .subckt 4N25 1 2 3 4 5 R1 N003 2 2 D1 1 N003 LD G1 3 5 N003 2 .876m C1 1 2 18p Q1 3 5 4 [4] NP .model LD D(Is=1e-20 Cjo=18p) .model NP NPN(Bf=610 Vaf=140 Ikf=15m Rc=1 Cjc=19p Cje=7p Cjs=7p C2=1e-15) .ends 4N25