Electrical – Best Transistor Equivalents for A509 and C509 Transistors


I found a one pulse activated automatic trigger circuit and it has A509 and C509 Transistors to be used.
But, these transistors are extremely rare and very hard to find.
eBay has those both, but it is not worth to buy according to huge import charges and shipping fees.

Circuit Diagram:
enter image description here

Please can you recommend best equivalent transistors for A509 PNP and C509 NPN Transistors?

Best Answer

Pretty much any el cheapo transistor will do. Don't pick the fancy types.