Molex KK connector

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The Molex KK aka KF2510 connector is used on synthesizer modules by CGS, Cyndustries, EFM, Encore Electronics, Metalbox, Oakley Sound Systems, Synthesis Technology and Kosmo.[1]


Molex KK housings mate with Molex KK headers on the PCB. The metal sleeves inside the housing are secured by crimping each conductor in two places, on the wire and on its insulator. A gas-tight connection is created between the wire and sleeve, prohibiting corrosion and a the crimp on the insulation creates a strain relief, providing additional resistance to mechanical stress.[2]

The Molex headers look very similar to the MTA Connector ones by TE AMP, but they are not the same. Do not try an force a Molex KK housing onto a MTA header or vice versa.[3]

The housing and metal crimp terminals are bought separately. Generally two different sizes are in use, 0.1” (2.54mm) for signal connections and 0.156" (3.96mm) for power distribution. For 0.100" use wire of 22, 24, 26, 28 or 30 AWG with a maximum diameter of 1.57mm.[4] For 0.156" use wire of 18, 20, 22 or 24 AWG, with a maximum diameter of 2.79mm.[5]


Mouser Electronics


  1. ^ Re: [sdiy] Blacet/Paia power header part number? by Cynthia Webster, 21 Mar 2005
  2. ^ Molex Connectors Explained, as used in Pinball. Termination–Crimping by 3 Apr 2005
  3. ^ Oakley Sound Systems, Construction Guide by Tony Allgood, v1.2.4, 24th September 2013, p. 27
  4. ^ Molex data sheet 08-50-0114
  5. ^ Molex data sheet 08-52-0072