This part is a kind of semiconductor called J512.
Function of this product has 2SJ512.
Manufacturers : Toshiba Semiconductor
Image and pinout :
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2SJ512 TOSHIBA Field Effect Transistor Silicon P Channel MOS Type (L2−π−MOSV) 2SJ512 Chopper Regulator, DC−DC Converter and Motor Drive Applications Unit: mm l Low drain−source ON resistance : RDS (ON) = 1.0 Ω (typ.) l High forward transfer admittance : |Yfs| = 3.7 S (typ.) l Low leakage current : IDSS = −100 µA (max) (VDS = −250 V) l Enhancement−mode : Vth = −1.5~−3.5 V (VDS = −10 V, ID = −1 mA) Maximum Ratings (Ta = 25°C) Characteristics Drain−source voltage Drain−gate voltage (RGS = 20 kΩ) Gate−source voltage Drain current DC (Note 1) Pulse (Note 1) Drain power dissipation (Tc = 25°C) Single pulse avalanche energy (Note 2) Avalanche current Repetitive avalenche energy (Note 3) Channel temperature Storage temperature range Symbol VDSS V [ ... ]