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In this micro coaxial cable assembly, KEL connectors of the USLS20 series are installed, in a 40-pin version. 

Devices are becoming ever smaller and more compact, making it increasingly difficult to mount board-level connectors in the narrowest spaces. The KEL connector of the USLS series with its effective mating length of only 0.35 mm and a low profile stack height of 1.65 mm is perfectly suited for narrow environments.

The ultra-fine AWG42 single strands offer maximum flexibility in applications. For a rigid version, with laminated tape, please select our article: KAB-KEL-USLS20-40-007-BH. In addition, the USLS connector is ideal for applications where cables must be passed through 4.0 mm diameter holes (for example in mobile phones) – even during final assembly. The USLS connector is designed to be advantageous in terms of torsion, which is often a problem in stacked configurations.

We can offer you the USLS connector in three versions with 20, 30 and 40 contacts and in two different stack types, straight and angled.

Technical specifications:

  • side 1: USLS20 KEL plug, 40 pin
  • side 2: USLS20 KEL plug, 40 pin
  • micro coaxial cable: single strands AWG42
  • L = 70 mm
  • pitch: 0.4 mm
  • 1:1 assignment
  • connection type: horizontal
  • operating temperature: -40 °C to +85 °C
  • weight: 1 g

Material and plating:

  • insulator material: glass-filled LCP (UL94V-0), black
  • contact material: copper alloy
  • contact plating: gold over nickel, nickel barrier (board side)
  • shell material: copper alloy
  • shell plating: gold over nickel, tin copper over nickel
  • cover material: glass-filled LCP (UL94V-0), black

Electrical characteristics:

  • current rating: 0.25 A per contact
  • contact resistance: max. 100 mΩ
  • dielectric withstand voltage: 200 V AC for 1 minute
  • insulation resistance: 100 MΩ min. at 250 V DC


  • compact connector with a low profile of 1.65 mm (0.065'') and a plug width of 3.05 mm (0.120'')
  • suitable for insertion through a narrow 2.7 mm (0.106") diameter hole even after soldering
  • better grounding performance for improved data transmission and EMC protection
  • effective mating length of 0,35 mm (0.014’’)
  • the metal housing reduces EMC interference and ensures product strength
  • connector is equipped with a nickel insulation layer on the contacts on the board side to prevent lift-off during soldering
  • connector is available in three other sizes: 20, 30 and 40 pole.


Matching PCB headers: USLS00-40, USLS00-40-A, USLS00-40-B, USLS00-40-C

Connector part of Sony HD Camera: FCB-EV7500, FCB-EV7520, FCB-EV5500, FCB-EV7300, FCB-EV7320, FCB-EV7310, FCB-EV5300, FCB-EV7100

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