Re: 152-0310-00 replacement

Roger Evans

Later serial number 454s had tunnel diodes which were the small gold can with a flange for polarity and gold plated leads (similar to 1N3716). I have one 454 with these (original) diodes and one which had the stripline mounted tunnel diodes but all four had failed and were replaced with a mixture of 1N3716 and the Russion 4.7mA tunnel diodes off eBay. I have not tested whether the replacement tunnel diodes meet the original spec but the fixed scope works fine for 'normal' use.


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