Category Archives: Manufacture


Jun03
TQRDCE Performance Expectations and Review

post on June 3, 2015

This is an example that implement TRQDCE form for vendor survey. TQRDCE Introduction: The company’s approach to establishing and maintaining long-term working relationships involves creating and monitoring mutual performance expectations and measurements. The use of performance metrics, constructive feedback, and … Continue reading →

Manufacture, Quality     WorkingBear    Views (19,947)     comment (0)

May27
Improve BGA Solderability By Partially Increasing Solder Paste Volume

post on May 27, 2015

Improving the solderability of BGA (Ball Grid Array) packages is always a big challenge for the SMT (Surface Mount Technology) process. Fine pitch BGAs (with a ball pitch less than 0.8mm) are particularly difficult to solder onto the PCB. Additionally, … Continue reading →

Design, Manufacture, Quality, Soldering     WorkingBear    Views (8,272)     comment (0)
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May20
Shipping carton drop/impact test condition

post on May 20, 2015

Do you know how vendor ensure that their products are not damaged during shipping due to handling by transporters or delivery personnel? Reputable vendors put effort into designing and selecting suitable packaging materials for shipping to ensure the quality of … Continue reading →

Corrugated Paper, Design, Manufacture     WorkingBear    Views (3,019)     comment (0)
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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 (5,641)     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 (18,286)     comments (8)
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