What problems should we pay attention to when choosing plate for test fixture?
The selection of test fixture plate and the precision of drilling play a key role in the accuracy of the whole test fixture. Test fixture in the selection of the plate generally acrylic (plexiglass), epoxy resin plate.
Test fixture Ordinary probe aperture is greater than 1.00mm fixture, test fixture plate is mostly plexiglass, plexiglass is cheap, at the same time, plexiglass is relatively soft when drilling expansion and shrinkage probe sleeve and hole combination, because plexiglass is transparent test fixture problems inspection is very easy. But ordinary plexiglass is easy to dissolve and break the bit when drilling, especially when the hole diameter is less than 0.8 mm, the problem is very big. Generally, when the hole diameter is less than 1 mm, epoxy resin plate is used. Epoxy resin plate drilling is not easy to break the bit, its toughness and rigidity are good, but the price is more expensive. The epoxy sheet does not expand and contract, so if the hole diameter is not accurate, it will cause the probe casing and the hole to become loose and wobble. If the epoxy resin board is opaque, it is more difficult to check if there is a problem with the test fixture. In addition, the temperature difference of the plexiglass is larger than that of the epoxy resin board. If the test density is very high, epoxy resin board should be used.
Test fixture sheet has a modified Plexiglass which has the advantages of low deformation, high temperature resistance 5 mm thick 0.6 mm drill bit can be drilled through continuous bit in one go, price slightly higher than ordinary plexiglass but lower than epoxy sheet is a very good choice.
Dongguan Lanyi Electronic Technology Co., Ltd. is a South Korean technology-led technology company, the company has a probe division (Sino-South Korea joint venture), fixture division, automation division, is an independent research and development, production, manufacturing enterprises.
At present, the company mainly produces: test probe, precision test fixture (products include: semiconductor test probe, camera module test fixture, fingerprint module test fixture, BGA test fixture, LCD module test fixture, etc.) and various kinds of test equipment for consumer electronic products.
In order to serve China semiconductor chip Blue Ocean, the company has always maintained the purpose of Korean quality manufacturing, and has a technical team from home and abroad, the design team has more than 8 years of practical design and manufacturing experience, and passed the ISO9001 system certification, from the organization design, software development, electronic control system, molding processing, assembly and debugging of one, Provide a full set of test solutions for precision testing.
Lanyi Electronics - Semiconductor Test Probe Manufacturing Plant
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