EMRFD Message Archive 15218
Message Date From Subject 15218 2019-01-13 10:42:10 wchulley identifying a mystery part...
GM - I was recently given a few RCA parts that I haven't been able to identify. The part numbers appear to be 533279, 533280, and 533281 and they are TO-8, 12 lead metal cans. They were mixed in with some CA30xx parts. I have a photo of one here:
Hopefully someone here can unstump me. Any ideas as to what these are?
thx and 73 de bill K7WXW
15219 2019-01-13 12:32:31 Dana Myers Re: identifying a mystery part... 15220 2019-01-13 17:10:41 augustinetez Re: identifying a mystery part... I think you'll find they are house numbers.Had a look through some early 70's RCA databooks and those numbers don't show up at all and there were no IC's of that style in mid 60's RCA databook.Slight correction - package style is TO-5 according to the 70's databooks.Terry VK5TM 15221 2019-01-14 15:55:44 wchulley Re: identifying a mystery part... Terry, fumble fingers... TO-5 it is. I agree, they are house numbers. I was hoping someone would recognize the number style. No such luck!Thanks for the help all. On to Plan B... Make some assumptions about what they might be and gin up a circuit to see if they behave in a way that helps to identify them.73 de bill K7WXW