Additions to range of hard metric 2mm connectors
A
Harting product story
Edited by the Engineeringtalk editorial team
Oct 23, 2001
Harting has introduced a number of new devices in its Har-bus HM+ range of hard metric 2mm connectors, which are compatible with the latest high-temperature surface-mount production processes
Harting has introduced a number of new devices in its Har-bus HM+ range of hard metric 2 mm connectors, which are compatible with the latest high-temperature surface-mount production processes.
The new devices can be directly mounted by automated pick-and-place technology, enabling soldering at the same time as other surface-mount components.
As more daughter cards are becoming entirely populated with surface-mount components, this means that all components for the daughter card, including connectors, can now be placed automatically and reflow soldered in one step.
The new connectors have been designed to exploit the latest developments in simultaneous double-sided reflow soldering (SDSRS) and pin-in-hole intrusive reflow (PIHIR) technology.
Harting has integrated open ventilation slots into the wafers and connector housings to provide free air flow, guaranteeing good heat distribution and providing homogeneous heat dissipation to aid uniform cooling of the soldered joints.
The 'open' design of the robust and rigid moulding ensures a rapid and even heat distribution even at the high temperatures required for lead-free soldering, while also allowing the utilisation of the familiar temperature profiles.
Another advantage of the open moulding is the short time needed for the heating of all contact rows.
Therefore, when reflow soldering takes place alongside much smaller components, the connector is no longer a time-critical item.
The surface-mount compatible connectors use the same hole configuration as traditional press-fit versions, allowing easy conversion to the new technology.
With this new concept, hard metric 2 mm connectors can for the first time be fully integrated into the economic reflow soldering process.
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