Ordering number:EN3102 NPN Triple Diffused Planar.
TC4451 - 12A High-Speed MOSFET Drivers
MIC4451 - 12A-Peak Low-Side MOSFET Driver / Bipolar/CMOS/DMOS Process
C4451 - 2SC4451
2SC4451 - NPN Triple Diffused Planar Silicon Transistor