Author Archives: WorkingBear


May05
Why Burn/In(B/I) still cannot screen out the DDR soldering fail?

post on May 5, 2015

We recently encountered a soldering issue with a DDR memory BGA (Ball Grid Array). The problem identified was HIP (Head-In-Pillow) — two balls with non-wetting under the BGA package were affected. To investigate, we sent someone to the field to … Continue reading →

Manufacture, Quality, Soldering     WorkingBear    Views (6,888)     comment (0)
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May01
Why Do Screw Bosses Crack After Mold-In Screw Inserts? Common Causes and Solutions

post on May 1, 2015

This story is long-standing memory, but WorkingBear is documenting it here for reference and as a learning record. One day, we received a customer complaint regarding a product with a plastic housing that had cracked. The issue was visually striking, … Continue reading →

Design, Manufacture, Plastic, Quality     WorkingBear    Views (20,727)     comments (8)
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Apr29
How to design LCM gasket/cushion for manufacture?

post on April 29, 2015

The LCM (LCD Module) is a common component for the electronic products. Almost of the LCM was made by glass and it is brittle and  break easily while hit or drop on the floor due to handle careless. As product … Continue reading →

Design, Manufacture     WorkingBear    Views (4,896)     comment (0)
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Apr27
How EMS fabricate a PCB Assembly?

post on April 27, 2015

How EMS (Electronic Manufacturing Services) fabricate a PCB (Printed Circuit Board) Assembly? This article is writing for the people who still not yet really under what is the PCB Assembly. Because WorkingBear found there are many people just come to … Continue reading →

Manufacture, SMT, Soldering     WorkingBear    Views (13,515)     comments (2)
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Apr24
How to select a good actuator design for right angle connector?

post on April 24, 2015

As my personal feeling that Right-angle FPC ZIF connector is really more easily to use than Drawer type of ZIF connector. Even right-angle connector is good but do you know how to select a good design of this kind of … Continue reading →

Connector, Design, Manufacture, Quality     WorkingBear    Views (4,397)     comment (0)