TD3A

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The TD3A is a 4.7 mA, 18 pF germanium tunnel diode. Tek used part number 152-0125-00 to refer to them. 1N3717 also refers to the same diode.

According to Stan Griffiths, they were used in 1L40, 1S1, 1S2, 11B1, 11B2, 11B2A, 147A, 1470, 148, 21A, 22A, 3B4, 3B5, 408, 432, 434, 453, 453A, 454, 466, 491, 5T3, 544, 546, 547, 556, 7B70, 7B71, and 7D11.

Possible Russian replacement: 1I304A (1И304А) or GI304A (ГИ304А)

  • I-V curve of 152-0125-00 TD3A. 1 mA/Div vertical, 50 mV/Div horizontal

    I-V curve of 152-0125-00 TD3A. 1 mA/Div vertical, 50 mV/Div horizontal

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