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QMA Straight Bulkhead Receptacle (jack) 1

HUBER+SUHNER QMA coaxial connectors are according to QLF standard and are available with 50 Ω impedance. The frequency range extends to 18 GHz, depending on the connector and cable type, however most of the QMA connectors are return loss optimised for frequencies up to 6 GHz. The interface is based on the SMA dimension, but, instead of a threaded coupling mechanism, a new snap-lock mechanism is used.
The QMA interface has a very similar performance to the SMA, but in addition it offers an easier, faster and safer coupling operation, helping customers to save significantly time during production. The packaging density of QMA is increased compared to SMA connectors thanks to the fact that no torque spanner is required to fasten the coupling nut. QMA is not intermateable with SMA.
QMA connectors are also available as waterproof version (IP 68) and are compatible with QLF standard

Mechanical data

Flange dimention Type hexagonal flange hex 8 mm
Tab Style   standard
Terminal Dimension D1 1.26 mm
Terminal Dimension L1   9.30 mm
Terminal Dimension D2   4.10 mm
Terminal Dimension L2   7.45 mm

Electrical data

Impendance 50 Ω
Max. Interface frequency ≤ 6 GHz

Environmental and general data

Operating Temp min -40 °C
Operating Temp max 85 °C
Weight 0.0022 kg
Number of Matings 100

Material data

2002/95/EC (RoHS)  compliant
Piece part Base material Plating
Centre Contact Material Copper Beryllium / Bronze SUCOPRO Plating
Outer Contact Material Brass SUCOPLATE (R) Plating
Insulator Material PFA / PTFE  
Body Material Brass SUCOPLATE (R) Plating

RF_Connectors_ENpdf [PDF, 42.12 MB]
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