This part is a kind of semiconductor called 2SJ108.

Function of this product has Silicon P Channel Junction Type Field Effect Transistor.

Manufacturers : Toshiba Semiconductor

Image and pinout :

Some of the text within the PDF file :

TOSHIBA Field Effect Transistor Silicon P Channel Junction Type 2SJ108 2SJ108 Low Noise Audio Amplifier Applications Unit: mm · Recommended for first stages of EQ amplifiers and MC head amplifiers. · High |Yfs|: |Yfs| = 22 mS (typ.) (VDS = −10 V, VGS = 0, IDSS = −3 mA) · Low noise: En = 0.95 nV/Hz1/2 (typ.) (VDS = −10 V, ID = −1 mA, f = 1 kHz) · High input impedance: IGSS = 1.0 nA (max) (VGS = 25 V) · Complementary to 2SK370 · Small package Maximum Ratings (Ta = 25°C) Characteristics Gate-drain voltage Gate current Drain power dissipation Junction temperature Storage temperature range Symbol VGDS IG PD Tj Tstg Rating 25 -10 200 125 -55~125 Electrical Characteristics (Ta = 25°C) Unit V mA mW °C °C JEDEC ― JEITA ― TOSHIBA 2-4E1C Weight: 0.13 g (typ.) C [ ... ]

2SJ108 PDF Datasheet Download