3dd209l.pdf datasheet:

NPN HIGH VOLTAGE FAST-SWITCHING NPN POWER TRANSISTOR R 3DD209L MAIN CHARACTERISTICS Package I 12A CV 400V CEOP C 120W APPLICATIONS Energy-saving light Electronic ballasts High frequency switching power supply High frequency power transform Commonly power amplifier TO-247 TO-3PN(B) FEATURES High breakdown voltage High current capability High switching speed High reliability RoHS RoHS product ORDER MESSAGE Order codes Marking Halogen Free Package Packaging 3DD209L-O-AN-N-B D209L NO TO-3PN Tube 3DD