What are 3.5 mm Connectors?

What are 3.5 mm Connectors and up to what frequency can they be used?

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- everything RF

Jan 12, 2019

The 3.5 mm connector is a heavy duty coaxial connector that provides mode free operation up to 34 GHz. This pin and socket type connector has an air dielectric filled interface and with an outer conductor diameter of 3.5 mm. This connector interface compatible with SMA and 2.92mm connectors and is capable of handling repeated mating cycles without damage. The 3.5 mm connector was developed by Hewlett Packard in the mid-1970s and was later marketed by Amphenol as APC3.5.

3.5 mm Connector Specifications

  • Frequency: Mode free operation up to 34 GHz
  • Impedance: 50 Ohms
  • Dielectric: Air
  • VSWR: ≤ 1.13 up to 26.5 GHz
  • Shielding Effectiveness: ≥ 100 dB
  • Dielectric Withstanding Voltage: 1500 VRMS
  • Mating cycles: 1000
  • Mating Torque: 8 lb inches / 90 N cm
  • Inter-mate ability: SMA, 2.92mm
  • Outer conductor diameter: 3.5 mm
  • Temperature: -65°C to +165°C

Click here see 3.5mm connectors from the leading manufacturers.

Applications: High Speed Digital, Instrumentation, Military, Aerospace, SATCOM, Cable Assemblies and Test & measurement.