Amphenol 91-56978x-xxx Connector Equivalent

91-56978x-xxx Connector & PC Tail Contact Equivalent

Milnec offers equivalents for Amphenol 91-56978x-xxx connectors in all shell sizes with matching PCB contacts. Milnec connectors are 100% compatible in form, fit, and function to the Amphenol counterparts. The connectors and contacts are built to the MIL-DTL-38999 Series III specification.

For new designs, Milnec offers a wide range of PCB contact lengths and sizes for use in standard TX00 (D38999/20), TX07 (D38999/24), and TX02 style receptacles, which are fully compatible will all MIL-DTL-38999 Series III stye connectors.


  • MIL-DTL-38999 Series III: Connector is 100% compatible in form, fit, and function to the mil-spec
  • Contact Material: Suitable copper alloy
  • Contact Finish: Gold plate per IAW ASTM B488-01, Type II, Code C, Class 1.25 (.000050 Min) over nickel IAW AMS QQ-N-290, Class 1, .000050-.000100 thick

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Popular Amphenol 91-56978x-xxx Configurations

Amphenol Part NumberContactsOrder Milnec Part Number
91-569781-35J6 x #22D PCB SocketsTX07N9-35YB-125
91-569781-35S6 x #22D PCB SocketsTX07N9-35YN-125
91-569782-35P13 x #22D PCB PinsTX07N11-35XN-125
91-569783-35S22 x #22D PCB SocketsTX07N13-35YN-125
91-569785-35H55 x #22D PCB SocketsTX07N17-35YA-125
91-569786-35S66 x #22D PCB SocketsTX07N19-35YN-125
91-569788-35G100 x #22D PCB PinsTX07N23-35XA-125
91-569788-35L100 x #22D PCB SocketsTX07N23-35YC-125

How To Order Your Amphenol 91-56978x-xxx Equivalent with PCB Contacts

To quickly order your 91-56978x-xxx equivalent, you must first cross it to a Milnec part number. See our part builder for instruction on how to cross-reference your part.