CONNECTORS
T TIck all
With literally thousands of connectors available,most purchasers narrow the fieldwith a checklist. Hirose presents some suggestions that are top of the list on size, reliability and price
Hirose’s Swing Lock provides a double locking mechanism for added reliability
Is it small enough?
Size is a perennial issue for purchasers in all sectors, but particularly in the consumer sector, where smaller is almost always better. Not only this, however, size must be balanced with the demand for increased power performance.
Hirose's new DF57 range of headers, sockets and crimp
contacts, for example, have been launched to meet with demand for smaller, better performing connectors.With a 1.2mm pitch, these wire-to-board connectors for power supplies have been designed with space saving in mind. Devices occupy only 18 or 23mm² board space for the two and three contact position respectively, with a height profile of 1.4mm. According to Hirose, power performance is not compromised by the small size, as evidenced by the two amp current rating per contact.
High reliability is also a must for many applications. Hirose’s
Swing Lock addresses this with a double locking mechanism. During the mating operation the receptacle is inserted into the header at a slight angle by offering the cable end in first to
To find the parts that best match their BoM, purchasers must draw up a strict checklist of connector criteria. Factors such as size, reliability and price are key, so new ideas that tick all the right boxes are always welcome.
engage with the positive lock. The mating operation is then finished by swinging the other end of the receptacle in to engage with the friction lock, which provides a tactile click sensation to confirm correct mating. It also prevents the receptacle from floating. The positive lock can withstand a minimum of 5N of cable pull force ensuring that the socket can not be accidentally removed from the header. A small lever helps make the unmating process quick and easy. A durability rating of 30 mating cycles is achieved.
Other factors said to enhance reliability include blade contacts,
which are renowned for their strength and are utilised to prevent damage against any cable wrenching forces. These are positioned within a strengthened housing lance to increase the retention further. A long contact mating length of 0.42mm is said to ensure good electrical continuity. Furthermore, the termination contacts on the header are moulded into the insulator to eliminate any gaps and to prevent solder wicking. The range is available in two and three positions with a four position option currently in development. Connectors accept AWG 30 to 28 cable sizes.
The features detailed abovemake the range ideal for LED
displays, touch panels, smallmotors, industrial robots, LED lighting modules, digital cameras and devices needing increased power.
Is it tough enough?
Top of the list for purchasers in the industrial sector, reliability is a must-have for many applications. To meet demand for high powered connectors offering
advanced reliability for industrial equipment, Hirose has introduced the EMrange, comprising plugs and receptacles that have the capacity to handle 50A current rating.
p36 Key to the connector's reliability claims is a design that p36 July 2010 | 35
he boxes
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