This part is a kind of semiconductor called E3150.
Function of this product has Transistors.
Manufacturers : SY
Image and pinout :
Some of the text within the PDF file :
SY semiconductors Shenzhen SY Semiconductors Co.，LTD. EB SERIES TRANSISTORS ●FEATURES：①HIGH VOLTAGE CAPABILITY ②HIGH SPEED SWITCHING ●APPLICATION：①FLUORESCENT LAMP ②ELECTRONIC BALLAST E3150 ③WIDE SOA ●Absolute Maximum Ratings (Tc=25℃) PARAMETER Collector– Base Voltage Collector– Emitter Voltage Emitter – Base Voltage Collector Current Junction Temperature Storage Temperature SYMBOL VCBO VCEO VEBO IC Tj Tstg VALUE 700 600 9 1.5 150 -65-150 UNIT V V V A ℃ ℃ TO-220 NPN ● Electronic Characteristics (Tc=25℃) CHARACTERISTICS SYMBOL Collector– Base Cutoff Current Collector– Emitter Cutoff Current Collector– Emitter Voltage Emitter – Base Voltage Collector– Emitter Saturation Voltage Base– Emitter Saturation Voltage DC Cu [ ... ]