Printed circuit board assembly for automatic test equipment

Automatic test equipment including:

• a computer workstation;
• and
• a testhead adapted for being carried by a manipulator, the testhead including a plurality of printed circuit board assemblies, each of the plurality of circuit board assemblies including
• a first circuit board having a first device side, the first device side having a first portion configured to mount a first plurality of semiconductor devices;
• a second circuit board having a second device side, the second device side having a second portion configured to mount a second plurality of semiconductor devices, the second circuit board disposed in confronting parallel relationship to the first circuit board;
• and
• a border interposed between the first and second boards and disposed around the respective first and second portions, the border cooperating with the first and second boards to form a liquid-tight container, the border formed with an inlet to receive an electrically nonconducting liquid and an outlet for discharging the liquid.

A method of cooling a plurality of electronic devices, the method including the steps:

• mounting the electronic devices on confronting sides of a pair of printed circuit boards, the circuit boards placed in a parallel stacked relationship;
• interposing a border between the circuit boards and around the electronic devices, the border cooperating with the boards to establish a liquidtight container;
• and
• immersing the electronic devices into an electrically nonconducting liquid inside the container.