4090 FX Film Frame

The Electroglas 4090 FX Film Frame is a member of the test and probe equipment class used to handle semiconductor material mounted on a film frame. In this role, such systems provide the mechanical interface between a mounted wafer or die array and the probing environment, allowing the device surface to be positioned accurately for contact by probe needles, probe cards, or other electrical contact elements.

Machines of this class are used where the substrate is carried on stretch film within a rigid frame rather than being presented only as a bare wafer on a chuck. The film-frame format supports secure handling of thin, fragile, or partially processed material and helps maintain organization of die locations during electrical inspection, sort, or related probe-based workflows.

Such systems generally accept a film frame, secure it in a fixture, and align the mounted substrate to the probing reference. Motion stages, optical alignment tools, and position control functions are used to bring selected die or test sites under the probe head. The equipment class is designed to hold the frame flat and stable while preserving access to the device side for contact and inspection.

During operation, the machine coordinates substrate positioning with the probing sequence so that electrical contact can be made at targeted locations across the mounted material. Class-level functions often include registration to alignment marks, indexing from site to site, and maintaining controlled presentation of the film-supported substrate to reduce handling stress while enabling repeatable test contact.