RI Fixtures use robust mechanical and electrical connections to survive the rigors of high volume semiconductor production. Regular repeated use without proper maintenance, however, can reduce the functional lifetime of the fixture.
- Store Fixture in a protected place when not in use such as a metal cabinet or book shelf.
- Make sure that the shelf it sits on is clean. The installed standoffs will allow the fixture to sit without damage to the connectors.
- Check DC and RF connections periodically to ensure good contact and that damage has not occurred.
- Store the fixture in such a way as to allow objects to contact the bottom surface. Anti-static Styrofoam is OK. Doing otherwise may contribute to pin breakage or RF connector damage. Do not store on WIRE shelf racks.
The Cassini family of testers use PKZ#12 connectors for the testhead-to-fixture interface. Like all connectors, they can become contaminated and need to be cleaned. PKZ#12 connectors are small. Standard cleaning methods, such as a cotton swab, are difficult to use on this connector and can damage the connector. This document shows how to clean PKZ#12 connectors using spray cleaner and spray duster.
This technique works for both the male and female connectors.
To clean the connector, first use a good, static-safe, chemical cleaner, such as TF-Cleaner. If TF-Cleaner is not available, use an equivalent cleaner. Alcohol-based cleaners are acceptable, however cleaners that contain oils such as tuner cleaner, are not acceptable.
Using this, or an equivalent cleaner, spray a small amount into the connector. This will flush any debris or contaminants out of the connector.
CAUTION! Be sure to use a cleaner that is not harmful to skin. Do not allow the cleaner to get into your eyes or other sensitive areas.
After flushing the connector with cleaner, use a 'duster', such as shown to dry the connector. Clean, dry air or stable gas such as CO2 are acceptable. Spray the duster into the connector to thoroughly flush any cleaner and dry the connector.
With this process, PKZ#12 connectors can be thoroughly cleaned without harm to the connector.
- Using Isopropyl alcohol (strength at least 98%) and a clean Q-tip or Kim-wipe, wipe the contact side of the RF and DC interfaces carefully (see picture 2). Also wipe the tips of the pogo pins themselves.
- Repeat step 1 for the contact pads of the socket (see picture 3).
- Use dry air to blow off any left over fibers left behind by the Q-tip and/or Kim-wipe.
- Inspect the socket for any broken or misaligned contacts.
- Replace bad contacts using the manufacturers prescribed replacement procedures.
- Use a mild stream of air and/or a soft artists brush to remove loose debris from the socket when needed.
- Follow the manufacturers prescribed cleaning process for debris that is not easily removed.