1N3717

The 1N3717  (P/N 152-0381-00,152-0125-00) is a 4.7 mA, 25 pF tunnel diode also known as the TD-3A.

The Tektronix part number for this diode is 152-0381-00 (1N3717) or 152-0125-00 (TD-3A).

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)

Data

• Germanium Power Devices Datasheet for 1N3712 through 1N3721
• General Electric 1N37xx Datasheet
• Modification Note Documenting Replacement of 152-0074-00 Tunnel Diode with 152-0381-00
• RPR Pages for 152-0125-0x

Key Specifications

Peak current	4.7 mA ±2.5%
Valley current	< 0.6 mA (typ. 0.45 mA)
Peak voltage	65 mV
Valley voltage	355 mV
Capacitance	< 25 pF (typ. 13 pF)

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  152-0125-01

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