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Germanium transistors: Difference between revisions
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added TO-7 case, and ref to Repairs
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Many Tektronix scopes from the 1960's contain '''Germanium transistors''', e.g., [[OC170]], [[OC171]], [[2N1516]], and [[2N2207]]. | Many Tektronix scopes from the 1960's contain '''Germanium transistors''' in the TO-7 package, e.g., [[OC170]], [[OC171]], [[2N1516]], and [[2N2207]]. | ||
These transistors are prone to failure. One particular failure mechanism is the growth of tin whiskers from the tin-coated inside walls of the | These transistors are prone to failure. One particular failure mechanism is the growth of tin whiskers from the tin-coated inside walls of the TO-7 case. | ||
In most cases, germanium transistors can be replaced with modern general-purpose | In most cases, germanium transistors can be replaced with modern general-purpose | ||
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fails, you either have to find a working replacement germanium transistor or modify the | fails, you either have to find a working replacement germanium transistor or modify the | ||
circuit to work with a silicon transistor. | circuit to work with a silicon transistor. | ||
Click on the '''Repairs''' tab above for one possible method for eliminating internal Tin whisker shorts. | |||
==Links== | ==Links== | ||