Press Fit D-Sub

Conec, straight PC D-sub connectors with press-fit contacts are extensively used on PCB boards for equipment in industrial control systems, computer environment and in telecommunication equipment.



Standard or High Density D-sub connectors can have press-fit contacts. Press Fit technology is a solderless connection method which is increasingly popular in mass board production.

Soldering can have several disadvantages ~ it can create thermal stress, and pretty obviously requires solder to be applied in what can be a costly reflow manufacturing process.

Press-fit technology consists of force fitting an oversized contact pin into the plated through hole of a printed circuit board (PCB) as an ‘interference’ fit.

The high radial pressure produces a deformation, resulting in a gas-tight electrical connection of high quality.

This difference in pin cross section and hole diameter results in a deformation of either the PCB hole or the cross section of the pin during the insertion process of pin into PCB hole.

Key Features

Key Features

  • RoHS compliant
  • Helps avoid the cost and time of an additional wave solder process
  • Is compatible with any PCB thickness starting from 1.6mm, a great advantage for thick backplanes
  • Various mounting options including threaded inserts, receptacle screw locks and harpoons for grounding purpose
  • Meets the industry’s increasing need for higher density connectors
  • Also available as High density 15, 26, 44, 62 and 78 way



  • Shell – Steel tin plated (brass tin plated or stainless steel available on request)
  • Insulator – Polyester GF UL94 V-0
  • Contacts – CU alloy
  • Contact plating – Gold plated over nickel


  • Test voltage U eff NN – 1000 V
  • Current rating – 7,5 A (UL) 5 A (CSA,VDE)
  • Working voltage – 125 V ≈
    Depending on isolation coordination (refer to DIN VDE 0110 IEC 664-1)
  • Contact resistance – Max. 10 mΩ prior to stressing, Δ R max. 10 mΩ after stressing
    per DIN 41652, Part 2
  • Insulation resistance – ≥5 GΩ


  • Clearance and creepage distance –
    Contact – contact ≥ .004″ 1.0 mm
    Contact – earth ≥ .047″ 1.2 mm
  • Mating and unmating forces –
    9 pos. ≤ 30 N
    15 pos. ≤ 50 N
    25 pos. ≤ 83 N
    37 pos. ≤ 123 N
    50 pos. ≤ 167 N
  • Mounting style: with M3 or 4-40 UNC threaded rear spacer
  • For 0.40″/1.0mm (+) .003″/0.09mm
    (-) .002″/0.06mm
    finished through-hole diameter
  • Order press-fit tool separately


  • Operating Temperature – -55 °C to + 125 °C

Contact Arrangement

  • 9, 15, 25, 37 and 50

Quality Class

  • A = Quality class 3 = 50 mating cycles
  • B = Quality class 2 = 200 mating cycles
  • C = Quality class 1 = 500 mating cycles


Assembly of press-fit d-sub connectors and sockets with the PCB requires only simple tooling which can be installed on a small press: a base plate with holes corresponding to the hole pattern of the PCB and an upper tool. Press-Fit d-sub connectors can provide a versatile, high reliability, high density keyed interface between PCBs and the external environment.