This part is a kind of semiconductor called 2N5445.

Function of this product has 40 AMP SILICON TRIACS.

Manufacturers : Digitron Semiconductors

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DIGITRON SEMICONDUCTORS 2N5441-2N5446, T6420 SERIES 40 AMP SILICON TRIACS Available Non-RoHS (standard) or RoHS compliant (add PBF suffix). Available as “HR” (high reliability) screened per MIL-PRF-19500, JANTX level. Add “HR” suffix to base part number. MAXIMUM RATINGS (Sinusoidal supply voltage at frequency 50/60Hz and with resistive or inductive load) Rating Symbol 2N5441 2N5444 T6420B 2N5442 2N5445 T6420D 2N5443 2N5446 T6420M Unit Repetitive peak off-state voltage(1) Gate open, TJ = -65 to 100°C VDROM 200 400 600 V RMS on-state current (Conduction angle = 360°) TC = 70°C (press-fit type) TC = 65°C (stud type) TC = 60°C (isolated stud type) IT(RMS) 40 40 40 A Peak surge (non-repetitive) on state current For one cycle of applied principal voltage 60Hz (s [ ... ]

2N5445 PDF Datasheet Download