whats the type that you wanna get, the most common type, 1n34a can be gotten from simlim tower. Couple of cents for 1. There are other type as well, nothing too expensive. Anyway, if wanna get it from simlim tower, go there knowing what type and the code/value of the components you are getting. The aunties/uncles there sell those parts to industrial folks, so wont be able to answer any geetar related questions.