SWH™ is made from litz wires, twisted together to small wire harnesses. SWH is made from litz wires, twisted together to small wire harnesses. With the unique construction of the twisted litz wires gathered in a "bunch", the SWH is much stronger and more stress resistant than individual litz wires.

  • Cost-savings
    Handle and solder all litz wires in one operation instead of two to three
  • Fewer claims
    Get a more reliable product with the stress resistant construction of the SWH
  • EMI improvement
    Get the positive effect from twisted wires. Use one conductor as ground
  • Space saving
    Benefit from the "stronger" construction and use finer wires than usual

Small, extremely reliable, colour coded and very easy to handle in production. SWH will improve your yield - and contribute to fewer returns from the market.

We also offer a higher level of subassembly, such as feeding the small wire harness into tubes, soldering terminals to the SWH in addition to performing custom operations; also for earphones and IEMs.



Hearing Instruments, earphones/IEMs and other micro electronics

  • Receiver In the Canal: SWH is ideal for applications where wires need to fit securely inside a tube. Available in skin colour, which makes the SWH discrete.
  • In The Ear/In the Canal: Perfect for microphones, receivers etc. The conductors are held together in a harness, which is easily placed inside of the earplug. It is no longer necessary to twist the wires together after soldering the receivers and microphones.
  • Behind The Ear: After soldering the SWH to the components, the SWH is easily placed and secured into position.



Material: ESW™ CuAg (also available in XT-ESW™)

Design/Colour:Available in several designs and colours

Type: Standard and customised

Compliance: RoHS and REACH


Examples of SWH used in Audio and Hearing Instruments



Litz wire:







ESW™ 7 x 0.032 mm
AWG 38

46 mm

0.5 mm  +/- 0.2 mm

SAC 305




ESW™ 6 x 0.05 mm
AWG 36

46 mm

0.5 mm  +/- 0.2 mm

SAC 305






> Why choose SWH

> SWH Application Note