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NOS- 4HA5 / 4HM5 / PC900

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  • NOS-   4HA5 / 4HM5 / PC900


New old stock 7 pin miniature triode. Various brands. The 4HA5 is shorter than the 4HM5, but most of these are dual numbered and have the height of the 4HM5. PC900 is the European designation for the 4HA5.

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