Amphenol 88-56978x-xxx Connector Equivalent

88-56978x-xxx Connector & PC Tail Contact Equivalent

Milnec offers equivalents for Amphenol 88-56978x-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 88-56978x-xxx Configurations

Amphenol Part NumberContactsOrder Milnec Part Number
88-569781-35P6 x #22D PCB PinsTX07W9-35XN-125
88-569782-35H13 x #22D PCB SocketsTX07W11-35YA-125
88-569782-35P13 x #22D PCB PinsTX07W11-35XN-125
88-569782-35S13 x #22D PCB SocketsTX07W11-35YN-125
88-569783-35P22 x #22D PCB PinsTX07W13-35XN-125
88-569784-05P5 x #16 PCB PinsTX07W15-05XN-125
88-569784-19S19 x #20 PCB SocketsTX07W15-19YN-125
88-569784-35P37 x #22D PCB PinsTX07W15-35XN-125
88-569785-35P55 x #22D PCB PinsTX07W17-35XN-125
88-569786-35P66 x #22D PCB PinsTX07W19-35XN-125
88-569787-16S16 x #16 PCB SocketsTX07W21-16YN-125
88-569787-35S79 x #22D PCB SocketsTX07W21-35YN-125
88-569787-41S41 x #20 PCB SocketsTX07W21-41YN-125
88-569788-35S100 x #22D PCB SocketsTX07W23-35YN-125
88-569789-35K128 x #22D PCB PinsTX07W25-35XC-125
88-569789-35M128 x #22D PCB PinsTX07W25-35XD-125
88-569789-43S23 x #20, 20 x #16 PCB SocketsTX07W25-43YN-125

How To Order Your Amphenol 88-56978x-xxx Equivalent with PCB Contacts

To quickly order your 88-56978x-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.