This part is a kind of semiconductor called 2N6239.

Function of this product has SILICON CONTROLLED RECTIFIERS.

Manufacturers : Digitron Semiconductors

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2N6236-2N6241 High-reliability discrete products and engineering services since 1977 SILICON CONTROLLED RECTIFIERS FEATURES  Available as “HR” (high reliability) screened per MIL-PRF-19500, JANTX level. Add “HR” suffix to base part number.  Available as non-RoHS (Sn/Pb plating), standard, and as RoHS by adding “-PBF” suffix. MAXIMUM RATINGS Rating Symbol Value Unit Repetitive peak forward and reverse blocking voltage (1) (1/2 sine wave, RGK = 1000Ω, TC = -40 to +110°C) 2N6236 2N6237 2N6238 2N6239 2N6240 2N6241 VDRM VRRM 30 50 100 200 400 600 Volts Non-repetitive peak reverse blocking voltage (1/2 sine wave, RGK = 1000Ω, TC = -40 to +110°C) 2N6236 2N6237 2N6238 2N6239 2N6240 2N6241 50 VRSM 100 150 250 450 650 Volts Average on-state current (TC = [ ... ]

2N6239 PDF Datasheet Download