Interface Modules are the part of the test fixture where electrical interconnect components are located. Normally this includes a bed of nails type array of spring pins, a floating plate to carry the DUT, an interface PCB and a lid. Interfaces can be made for boards with contacts on one or both sides but fixtures for boards with all contacts on one side are much simpler.
Features of Interface Modules
- Bed of Nails Contact to Boards
- Generally 1mm min pitch
- Sockets and contactors can be integrated to support tighter pitch arrays
- Max size constrained by test press selection
- Double ended spring pin designs interface direct to a PCB without soldering.
- Pin Receptacle designs use holders that solder to the PCB
- Solder Tail designs simply provide a wire to interface to the test system
- Connector panels can be integrated to simplify connection to the test system
Advantages of Interface Modules
- Support multiple PCB test setups with one test press
- Support multiple test stations and reconfigure for new product as required
- Maintain uptime with spare modules
- Lower cost than integrating press functionality into the module