This part is a kind of semiconductor called 2N4393.

Function of this product has N-CHANNEL SILICON JFET.

Manufacturers : Central Semiconductor

Image and pinout :

Some of the text within the PDF file :

2N4391 2N4392 2N4393 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 2N4391 series types are N-Channel silicon JFETs designed for analog switching and chopper applications. MARKING: FULL PART NUMBER TO-18 CASE MAXIMUM RATINGS: (TA=25°C) Gate-Drain Voltage Gate-Source Voltage Gate Current Power Dissipation (TC=25°C) Operating and Storage Junction Temperature SYMBOL VGD VGS IG PD TJ, Tstg 40 40 50 1.8 -65 to +175 ELECTRICAL CHARACTERISTICS: (TA=25°C unless otherwise noted) 2N4391 2N4392 SYMBOL TEST CONDITIONS MIN MAX MIN MAX IGSS VGS=20V - 0.1 - 0.1 IGSS VGS=20V, TA=125°C - 0.2 - 0.2 IDSS VDS=20V 50 150 25 75 ID(OFF) VDS=20V, VGS=12V - 0.1 - - ID(OFF) VDS=20V, VGS=7.0V -- - 0.1 ID(OFF) VDS=20V, VGS=5.0V - [ ... ]

2N4393 PDF Datasheet Download