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Electronics Manufacturing & Production Handbook 2019


Quick-locking connector family gets new member
14 August 2002, Interconnection

Last year, Huber+Suhner released its new QMA interface. The concept of the QuickLock interface was very widely accepted in the market and sparked demand for a QMA-based N connector. Huber+Suhner thus developed the QN connector.

The N connector is one of the best-known and most popular interfaces in the RF industry. This interface is used in a wide variety of applications, primarily where high power has to be transmitted with low loss. Rugged, water-tight, good intermodulation characteristics and RF screening effectiveness are other advantages distinguishing the N connector. The new QN interface combines these qualities with the simple QuickLock coupling mechanism.

Simple mating and demating

As known from QMA, the snap mechanism of the QN works very simply. When a mating force of about 50N is applied, the locking mechanism snaps closed in a single step. To demate, one must pull back the decoupling sleeve. This opens the snap ring of the mating mechanism and allows demating with a force of merely 50N. If the decoupling sleeve is not actuated, the QN connector will never become disconnected.

This straightforward connecting and disconnecting procedure reduces the time needed to mate and demate a connection to about one tenth of the time required for a threaded interface. Also, neither an open-end spanner nor a torque spanner is required. This produces a number of benefits, for example: higher packing density, since no space is needed to tighten the nut with a spanner; no purchase, storage, calibration and maintenance of a torque spanner; no possibility of incorrect tightening torque; no scratched front panels.

No loose connections

Practice has shown that screw-on interfaces often produce loose connections leading to failures - some causes of failure of a screw-connected interface may be: insufficient torque applied during tightening; vibration during transport or service; twisting of the (right angle) connectors during wiring or as a result of other stresses on the cable, etc. This is all eliminated with the QN connector, thanks to its reliable snap-on mechanism making a reproducible connection.

Excellent characteristics

A special contact spring element guarantees a steady outer conductor contact, which always extends all the way around the face of the bush contact. With this solution, excellent intermodulation values and RF screening effectiveness are achieved. The QN has an operating frequency up to 11 GHz, and its return loss has been optimised for the range up to 6 GHz. As with the N connector, a seal in the interface guarantees the necessary protection against moisture in outdoor applications.

The superior technical characteristics of the QN connector allow the new interface to be used in a wide variety of applications. Its good intermodulation characteristics and high power handling capacity make it an ideal choice for service in the transmitting path of mobile radio base stations. On the other hand, thanks to the waterproof-ness of the QN interface, it is also ideally suited for time-saving complete jumper and feeder cabling up to the antenna. The QN is also an excellent solution in many other indoor and outdoor applications in the fields of electronics and RF engineering. This applies particularly when high screening effectiveness, high power handling capacity and a rugged connection with quick and easy decoupling is demanded.

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Further reading:

  • Locking power jacks
    23 October 2019, TRX Electronics, Interconnection
    The new BKZ series from Switchcraft solves the common problem of accidental disconnection of a power supply by adding a sturdy twist-lock to the company’s most popular form factor. The intuitive design ...
  • Waterproof Micro USB connector
    23 October 2019, Electrocomp, Interconnection
    As part of a new product line from GCT, the aquanex waterproof range brings together high-performance USB connectors with IP67 rated sealing. The first connector launched from the aquanex range, the USB3500, ...
  • Miniature Hi-Rel connectors
    23 October 2019, Hiconnex, Interconnection
    Nicomatic has launched a new series of 1,00 mm pitch connectors for demanding space-constrained applications in harsh environments such as aerospace and industrial equipment. Five standard layouts with ...
  • Connectors for transportation market
    23 October 2019, TRX Electronics, Interconnection
    The CTCS connection system is Aptiv’s solution for harsh-environment applications. The CTCS connector and CTS terminal families have been designed to meet the demanding requirements of commercial and ...
  • High-power connectors
    23 October 2019, Avnet South Africa, Interconnection
    TE Connectivity introduced Multi-Beam Plus connectors, the latest evolution of its power connector line. The new connectors share the same low-profile dimensions and enable the same through-system airflow ...
  • High-frequency connectors and cable assemblies
    23 October 2019, RFiber Solutions, Interconnection
    Withwave’s SMPM family of connectors covers wide frequency ranges from RF to microwave, with optimised frequency performance and high density. The proprietary internal insulator enables a simple structure ...
  • Compact industrial connectors
    23 October 2019, RS Components (SA), Interconnection
    RS Components has extended its industrial connector portfolio with two new solutions from Harting, one of the world’s leading providers of industrial connection technology, including the recently launched ...
  • Balancing performance, speed and cost for rugged interconnects
    25 September 2019, Avnet South Africa, Interconnection
    System designers want the smallest and lightest possible connectors for use in aerospace and military electronics, while industrial and transportation electronics are expected to deal with the same harsh environments at more competitive cost points.
  • Sealed plastic connectors
    25 September 2019, TRX Electronics, Interconnection
    The UTL series from Souriau is a plastic connector suitable for outdoor industrial applications thanks to a high sealing performance (IP68/IP69K) and an extreme UV resistance with F1 material per UL746C. ...
  • Connector module for 4PPoE
    25 September 2019, Webb Industries, Interconnection
    Webb Industries has introduced the new AMJ-S Module 2G from Telegärtner, optimised and redesigned to provide demanding applications with operational reliability under extreme mechanical and electrical ...
  • RF coaxial IDC connectors
    28 August 2019, Future Electronics, Interconnection
    AVX has released new wire-to-board RF coaxial IDC connectors for industrial and automotive applications. The initial release of the new 00-6791 Series is comprised of two small, single-piece solutions ...
  • Sealed plastic connectors
    28 August 2019, TRX Electronics, Interconnection
    The UTL series from Souriau is a plastic connector suitable for outdoor industrial applications thanks to a high sealing performance (IP68/IP69K) and an extreme UV resistance with F1 material per UL746C. ...

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