Amphenol K-Series (3.5mm) Plugs and Jacks

Amphenol’s plugs and sockets range continually expand to meet the needs of our customers. The success of the M-Series phone plugs led to the RCA series being developed. The Miniature XLR range was a natural progression from our standard XLR series as the demand for smaller interconnects increased.

The latest addition to the range is a professional grade 3.5mm phone plug designed for applications that require a robust interconnect.


  • Mono or TRS (Stereo).
  • AX Series inspired shell design.
  • Suits Cable O.D from 2.5mm to 5mm (0.098” to 0.196”)
  • Robust diecast shell in Satin Nickel or Black finish.
  • Nickel or Gold contact plating.
  • Flexible grommet cable protection.
  • Improved solderability.
  • Precision machined contacts.
  • Standard or Bulk packaging.


  • Black Shell,
  • Gold contacts.


GENERAL CHARACTERISTICS Number of Contacts 2 Pole (Mono)
3 Pole Tip Ring Sleeve (Stereo)
Termination Solder
Wire Gauge – Stranded Wire 2 Pole (Mono): AWG 16 – 1.5mm2
3 Pole (Stereo): AWG 18 – 1mm2
Flammability rating of insulating plastics UL94V-0
Solderability complies with IEC 68-2-20
Environmental Complies with EU RoHS 2 Directive 2011/65/EU
ELECTRICAL CHARACTERISTICS Current Carrying Capacity >0.5mA (Depends on Mating Connector and Cable)
Typical Contact Resistance ≤20mΩ (Depends on Mating Connector and Cable)
Insulation resistance (initial) >200M Ω
After Damp Heat Test >100M Ω
Test Voltage AC RMS: Dielectric Strength 250VAC
Operating Temperature -20ºC to +65ºC (-4ºF to +149ºF)
MECHANICAL CHARACTERISTICS Insertion and Withdrawal Force <20N / >3N (depends on mating connector)
Cable O.D. 3mm to 5mm (0.118” to 0.196”)
Mechanical Operations 1000 mating cycles
Weight 8g (0.017lb)
MATERIALS Connector Shell Material (Plugs) Diecast Zinc Alloy EZDA No.3
Connector Shell Finish Satin Nickel or Black Polyester
Insulators PA66
Cable Bushing Santoprene
Contacts Brass
Plating Nickel or Gold Flash

Download Catalog: Amphenol Connector Catalog


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