Datasheet Summary
2N4857 2N4857A
N-CHANNEL SILICON JFET w w w. c e n t r a l s e m i . c o m DESCRIPTION: The CENTRAL SEMICONDUCTOR 2N4857 and 2N4857A are N-Channel silicon JFETs designed for analog switching and chopper applications.
MARKING: FULL PART NUMBER
TO-18 CASE
MAXIMUM RATINGS: (TA=25°C) Drain-Source Voltage Drain-Gate Voltage Reverse Gate-Source Voltage Forward Gate Current Power Dissipation (TA=25°C) Operating and Storage Junction Temperature
SYMBOL VDS VDG VGSR IGF PD
TJ, Tstg
40 40 40 50 360 -65 to +200
ELECTRICAL CHARACTERISTICS: (TA=25°C unless otherwise noted)
SYMBOL TEST CONDITIONS
IGSS
VGS=20V, VDS=0
IGSS
VGS=20V, VDS=0, TA=150°C
IDSS
VDS=15V, VGS=0
ID(OFF)
VDS=15V,...
