What are 1.5-3.5 Connectors?

What are 1.5-3.5 Connectors? Where are these types of connectors used? What are their key parameters?

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- everything RF

Dec 13, 2022

The 1.5-3.5 Connector is a small RF coaxial connector interface that has been developed for use in wireless infrastructure applications. It has been based on the SMA connector interface but has been made smaller. The 1.5-3.5 connector requires about 53% less space than the 2.2-5 connectors and 75% less space than the 4.3-10 connectors. The size, material, weight and cost reduction, make 1.5-3.5 connectors ideal for small-cell applications. Despite their smaller size these connectors are compatible with low-loss 1/4” cables.

The 1.5-3.5 connectors operate up to 30 GHz and enable a robust and PIM stable design in a small space. A typical 4-hole flange jack only requires either 15 × 9.7 mm or 12.7 × 12.7 mm space.

The connectors are available in both push-pull designs and screw-on variants. The push-pull design of the 1.5-3.5 connector allows quick mate/unmate without the need for any tools. The screw-on variant requires a tool with a recommended torque of 1 Nm.

Key benefits of the 1.5-3.5 connector series include space-saving, less weight, compact design, reliability, durability, very low PIM values, protected contact area even when not mated, and resistance to harsh environmental conditions.

1.5-3.5 Connector Specifications:

  • Frequency range: up to 30 GHz
  • Passive intermodulation(PIM): -166 dBc @ 2 x 43 dBm
  • Power handling: 100 W (2 GHz)
  • Return loss (typ.): up to 6 GHz – 32 dB
  • Mating cycles: >100
  • Recommended torque/Screw type: 1 Nm
  • IP classification: IP68
  • Operating temperature: -55°C to +90°C

The 1.5-3.5 Connectors are is ideal for Pico cell applications, DAS (Distributed antenna systems), telematics in vehicles, and harsh environments such as the agriculture sector (where extreme temperature fluctuations, humidity, and dust occurs).

Click here to see 1.5-3.5 Connectors from the leading manufacturers.