Author Archives: WorkingBear


Mar09
What Process Impact of Substituting SMDs with Paste-In-Hole components?

post on March 9, 2016

One day, my manager asked me a question: “Will changing the components from SMDs (Surface Mount Devices) to THDs (Through Hole Devices) and using the PIH (Paste-In-Hole) process affect the process and design?” I later realized that the question aimed … Continue reading →

Manufacture, SMT, Soldering     WorkingBear    Views (5,836)     comment (0)
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Feb01
Solder Preforms – Another Choice for Solder Volume Increasing Solution

post on February 1, 2016

Today, most of electronic components are developed into smaller size. The small chips are downsized from 1206 to 0805, 0603, 0402, 0201, even to 01005. The size of chip is smaller; the required solder volume is less. Moreover, the required … Continue reading →

Manufacture, SMT, Soldering     WorkingBear    Views (7,896)     comment (0)
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Jan04
What is Step-up & Step-down Stencil? Selective Solder Paste Volume Increasing Solution

post on January 4, 2016

The trend in the electronics industry is toward smaller and smaller SMD components, with sizes such as 0402, 0201, and even 01005 becoming common (Note 1). Additionally, the pitch between pins on ICs has decreased to a fine pitch of … Continue reading →

Manufacture, SMT, Soldering     WorkingBear    Views (15,344)     comment (0)
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Oct01
Copper Defined vs. Solder Mask Defined pad design for BGA soldering strength

post on October 1, 2015

Since the electronic product design moves from desktop to portable devices, the manufacturer also make electronic component as small as possible to meet this popular trend. Besides, the PCB thickness also become thinner and the associated soldering pads on the … Continue reading →

PCB/FPC/PTF, Reliability, SMT, Soldering     WorkingBear    Views (22,586)     comment (0)
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Jul01
Why do thinner PCBs will need carrier for reflow process?

post on July 1, 2015

As the career of Manufacturing Process Engineering(MPE), WorkingBear has noticed a constant battle between Designers, Marketers, and Manufacturers. Marketers always want  thin, modern design that look thin. Designers think fabrication is simple, while Manufacturers want  strong, robust, sturdy assemblies that … Continue reading →

Design, Glue/adhesive/epoxy/underfill,, PCB/FPC/PTF, Process, Quality, SMT, Soldering     WorkingBear    Views (13,881)     comments (2)
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