2N4857A

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 MIN IGSS VGS=20V, VDS=0 IGSS VGS=20V, VDS=0, TA=150°C IDSS VDS=15V, VGS=0 20 ID(OFF) VDS=15V, VGS=10V ID(OFF) VDS=15V, VGS=10V, TA=150°C BVGSS IG=1.0μA, VDS=0 40 VGS(OFF) VDS=15V, ID=0.5nA 2.0 VDS(ON) ID=10mA, VGS=0 rDS(ON) VGS=0, ID=0, f=1.0kHz Crss VGS=10V, VDS=0, f=1.0MHz (2N4857) Crss VGS=10V, VDS=0, f=1.0MHz (2N4857A) Ciss VGS=10V, VDS=0, f=1.0MHz (2N4857) Ciss VGS=10V, VDS=0, f=1.0MHz (2N4857A) td VDD=10V, VGS(OFF)=6.0V, ID=10mA tr VDD=10V, VGS(OFF)=6.0V, ID=10mA toff VDD=10V, VGS(OFF)=6.0V, ID=10mA (2N4857) toff VDD=10V, VGS(OFF)=6.0V, ID=10mA (2N4857A) MAX 0.25 0.5 100 0.25 0.5 6.0 0.5 40 8.0 3.5 18 10 6.0 4.0 50 40 UNITS V V V mA mW °C UNITS nA μA mA nA μA V V V Ω pF pF pF pF ns ns ns ns R0 (11-June 2012) 2N4857 2N4857A N-CHANNEL SILICON JFET TO-18 CASE - MECHANICAL OUTLINE LEAD CODE: 1) Source 2) Drain 3) Gate MARKING: FULL PART NUMBER w w w. c e...