This part is a kind of semiconductor called D209L.

Function of this product has Silicon NPN Power Transistor.

Manufacturers : New Jersey Semi-Conductor

Image and pinout :

Some of the text within the PDF file :

tJ 20 STERN AVE. SPRINGFIELD, NEW JERSEY 07081 U.S.A. , One.. Silicon NPN Power Transistor DESCRIPTION • High Collector-Emitter Breakdown Voltage- : V(BR)CEO= 400V(Min) • High Switching Speed • High Reliability APPLICATIONS • Switching regulators • Ultrasonic generators • High frequency inverters • General purpose power amplifiers TELEPHONE: (973) 376-2922 (212)227-6005 FAX: (973) 376-8960 D209L i 1 23 PIN 1.BASE 2.COLLECTOR 3. BETTER TO-3PN package uQi ABSOLUTE MAXIMUM RATINGS(Ta=25r) SYMBOL PARAMETER VALUE UNIT VCBO Collector-Base Voltage 700 V VCEO Collector-Emitter Voltage 400 V VEBO Emitter-Base voltage 9V Ic Collector Current-Continuous Collector Power Dissipation PC @ TC=25'C Tj Junction Temperature 12 A 100 W 150 •c Tstg Storage Temperature Ra [ ... ]

D209L PDF Datasheet Download