2N4858 2N4858A w w w. c e n t r a l s e m i . c o m N-CHANNEL SILICON JFET DESCRIPTION: The CENTRAL SEMICONDUCTOR 2N4858 and 2N4858A 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 SYMBOL VDS VDG Drain-Gate Voltage Reverse Gate-Source Voltage VGSR IGF Forward Gate Current Power Dissipation (TA=25°C) Operating and Storage Junction Temperature ELECTRICAL SYMBOL IGSS IGSS IDSS ID(OFF) ID(OFF) BVGSS VGS(OFF) VDS(ON) rDS(ON) Crss Crss Ciss Ciss td td tr tr toff toff PD TJ, Tstg CHARACTERISTICS: (TA=25°C unless otherwise noted) TEST CONDITIONS MIN VGS=20V, VDS=0 VGS=20V, VDS=0, TA=150°C VDS=15V, VGS=0 VDS=15V, VGS=10V 8.0 VDS=15V, VGS=10V, TA=150°C IG=1.0μA, VDS=0 VDS=15V, ID=0.5nA ID=5.0mA, VGS=0 UNITS V 40 V 40 V 50 mA 360 mW -65 to +200 °C MAX 0.25 UNITS nA 0.5 μA 80 mA 0.25 nA 0.5 μA 40 0.8 VGS=0, ID=0, f=1.0kHz VGS=10V, VDS=0, f=1.0MHz (2N4858) 40 V 4.0 V 0.5 V 60 Ω 8.0 pF VGS=10V, VDS=0, f=1.0MHz (2N4858A) VGS=10V, VDS=0, f=1.0MHz (2N4858) 3.5 pF 18 pF VGS=10V, VDD=10V, 10 pF 10 ns VDD=10V, VGS(OFF)=4.0V, ID=5.0mA (2N4858A) VDD=10V, VGS(OFF)=4.0V, ID=5.0mA (2N4858) VDD=10V, VGS(OFF)=4.0V, ID=5.0mA (2N4858A) 8.0 ns 10 ns 8.0 ns VDD=10V, VDD=10V, 100 ns 80 ns VDS=0, f=1.0MHz (2N4858A) VGS(OFF)=4.0V, ID=5.0mA (2N4858) VGS(OFF)=4.0V, VGS(OFF)=4.0V, ID=5.0mA (2N4858) ID=5.0mA (2N4858A) R0 (19-August 2010) 2N4858 2N4858A N-CHANNEL SILICON JFET TO-18 CASE - MECHANICAL OUTLINE LEAD CODE: 1) Source 2) Drain 3) Gate MARKING: FULL PART NUMBER R0 (19-August 2010) w w w. c e n t r a l s e m i . c o m