This part is a kind of semiconductor called T106D1.
Function of this product has (T10x) Sensitive SCRs.
Manufacturers : Teccor Electronics
Image and pinout :
Some of the text within the PDF file :
l Se ec te U. L. G 39 CO 716 E R #E d P Fi le k ac ag es * NI ZE D TO-92 * TO-220 Isolated 3-lead Compak TO-202 TO-252 D-Pak TO-251 V-Pak A K G (0.8 A to 10 A) E5 General Description The Teccor line of sensitive SCR semiconductors are half-wave unidirectional, gate-controlled rectifiers (SCR-thyristor) which complement Teccor's line of power SCRs. This group of packages offers ratings of 0.8 A to 10 A, and 200 V to 600 V with gate sensitivities of 12 µA to 500 µA. For gate currents in the 10 mA to 50 mA ranges, see “SCRs” section of this catalog. The TO-220 and TO-92 are electrically isolated where the case or tab is internally isolated to allow the use of low-cost assembly and convenient packaging techniques. Teccor's line of SCRs features glass-passivated junc [ ... ]