This part is a kind of semiconductor called D1509.

Function of this product has 2SD1509.

Manufacturers : Toshiba Semiconductor

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Some of the text within the PDF file :

2SD1509 TOSHIBA Transistor Silicon NPN Epitaxial Type (Darlington Power Transistor) 2SD1509 Micro-Motor Drive, Hammer Drive Applications Switching Applications Power Amplifier Applications Unit: mm • High DC current gain: hFE = 2000 (min) (VCE = 2 V, IC = 1 A) • Low saturation voltage: VCE (sat) = 1.5 V (max) (IC = 1 A, IB = 1 mA) Absolute Maximum Ratings (Ta = 25°C) Characteristics Symbol Rating Unit Collector-base voltage VCBO 80 V Collector-emitter voltage VCEO 80 V Emitter-base voltage VEBO 8 V Collector current IC 2 A Base current IB 0.5 A Collector power dissipation Ta = 25°C Tc = 25°C PC 1.5 W 10 JEDEC JEITA ― ― Junction temperature Storage temperature range Tj 150 °C Tstg −55 to 150 °C TOSHIBA 2-8H1A Weight: 0.82 g (typ.) Note1: Using [ ... ]

D1509 PDF Datasheet Download