Transistor H 1020s? PNP type? Shape and foot position:
2SA 1020 is a low-frequency switch tube with parameters of PNP, 50V, 2A, 0.9W, and H 1020s can also be changed to 2SB892 and 2SA 1220.
H 1020s is an easy product to buy, so online shopping is very convenient.