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| The TD3A is a 4.7 mA, 18 pF germanium [[tunnel diodes|tunnel diode]].
| | #redirect[[1N3717]] |
| Tek used part number 152-0125-00 to refer to them.
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| [[1N3717]] also refers to the same diode. | |
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| According to [[Stan Griffiths]], they were used in [[1L40]], [[1S1]], [[1S2]], [[11B1]], [[11B2]],
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| [[11B2|11B2A]], [[147|147A]], [[1470]], [[148]], [[555#Type_21A_and_22A_Timebases|21A]],
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| [[555#Type_21A_and_22A_Timebases|22A]], [[3B4]], [[3B5]], [[408]], [[432]],
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| [[434]], [[453]], [[453|453A]], [[454]], [[466]], [[491]], [[5T3]], [[544]], [[546]], [[547]],
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| [[556]], [[7B70]], [[7B71]], and [[7D11]].
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| Possible [[Russian tunnel diodes|Russian replacement]]: 1I304A (1И304А) or GI304A (ГИ304А)
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| <gallery>
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| File:Td3a_152-0125-00_i-v_curve.jpg|I-V curve of 152-0125-00 TD3A. 1 mA/Div vertical, 50 mV/Div horizontal
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| </gallery>
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| [[Category:Tunnel diodes]] | | [[Category:Tunnel diodes]] |