QMA Connectors

A QMA connector is a coaxial radio frequency connector, which operates in the multi-megahertz range. QMA connectors maintain the shielding barrier in electrical applications. The interface or communication link happens via snap lock mechanisms.

QMA connectors offer easier, faster and safer coupling operations resulting in significant time savings during system production. The snap lock function of a QMA connector makes it easier to mate and de-mate connections, and allows for connector coupling in tight spaces. The packaging density is higher than in SubMiniature version A (SMA connectors) because no torque spanner is necessary when fastening the coupling nut.

What are QMA connectors used for?

QMA connectors are used in outdoor applications such as wireless communications, transmission systems, portable radio systems, air traffic control, and assemblies for mobile radio base stations. They have a high vibration and impact tolerance and can also be used in defence and the industrial sector.

Types of QMA connectors

Standard QMA connectors include:

  • Cable connectors, which are used for flexible as well as semi-rigid cables
  • Panel connectors with straight flange, bulkhead, screw-in or press-count receptacles
  • Printed circuit board connectors, which offer through-hole and surface-mount technology for antenna applications

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Description Price Gender Body Orientation Termination Method Mounting Type Size Body Plating Cable Type Impedance Mating Type Operating Frequency Contact Plating Contact Material
RS Stock No. 819-4190
Mfr. Part No.28K201-400N5
$10.78
Each
units
Female Right Angle Solder Pin PCB Mount - - RG174 A/U, RG188 A/U, RG316/U 50Ω Quick Lock 0 → 18GHz White Bronze Copper Zinc Alloy
RS Stock No. 612-7072
Mfr. Part No.16_QMA-50-2-2/133_NE
$31.33
Each
units
Male Right Angle Crimp Cable Mount - Copper Alloy RG316/U 50Ω - 0 → 11GHz Gold Brass
RS Stock No. 819-4201
Mfr. Part No.28S207-302N5
$8.56
Each
units
Male Right Angle Crimp, Solder Cable Mount - - RG174 A/U, RG188 A/U, RG316/U 50Ω Quick Lock 0 → 18GHz White Bronze Copper Zinc Alloy
RS Stock No. 816-9318
Mfr. Part No.QMA6252A1-001-3GT30G-50
BrandAmphenol
$10.40
Each
units
Female Right Angle Solder PCB Mount - - - - Threaded - Gold over Nickel Beryllium Copper
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