AN-0004144 Datasheet, PDF (1/4 Pages) M/A-COM Technology Solutions, Inc. – Vacuum Release Tray Handling

AN-0004144
Vacuum Release Tray Handling
Rev. V1
1.0 Introduction
Vacuum Release Trays are “pocketless” carriers which hold devices securely in place during shipping or handling,
and offer the unique ability to release the devices on demand for unloading. Use the recommended process
parameters and procedures below for best device handling results.
2.0 Overview
The patented Vacuum Release process relies on changing the surface contact area between the device and the
tray elastic Gel membrane placed over a mesh material. This change in surface contact directly affects the
magnitude of the Gel holding force.
In the normal “Hold Mode” (Figure 1), the surface contact is maximized and devices are held firmly in place for
shipping, handling, and storage.
In the temporary “Release Mode” (Figure 2), the surface contact is minimized by applying vacuum thru a hole in
the underside of the tray which causes the Gel membrane to conform to the shape of the mesh. This reduces the
holding force between the Gel and device (fewer points of contact) which allows for easy vertical device removal
using a vacuum pick-up tool. Follow the guidelines below for best results.
Once vacuum is removed, the elastic Gel membrane returns back to its original position and securely hold the
remaining devices. The trays are reusable therefore this Hold and Release process can be done repeatedly on
the same tray.
Please note that applying vacuum to underside of tray is only required during the actual device unloading
process. Vacuum is not used when loading devices on Gel surface.
Figure 1: Hold Mode
Figure 2: Release Mode
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