This IC, 5TB06-700BW, is sitting on a motor controller PCB (manufactured in 1998). Pin 1 and 2 are attached to 230V lines, while pin 3 is attached to the output-pin on a U2010B phase control IC. The motor does not run so I suspect that the TO-220 IC is dead, but I cannot find any information on google regarding what kind of IC it is so I cannot confirm it.

What IC is it?

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  • \$\begingroup\$ triacs will usually fail short circuit. Open circuit if they exploded - but that is visually obvious. \$\endgroup\$
    – Kartman
    Commented Aug 17, 2022 at 12:05

1 Answer 1


I think the first '5' is a 'B".

A BTB06 is a '6A standard and Snubberless™ Triac'


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