Author Archives: WorkingBear


Apr23
The benefit to use shielding clips to instead of shielding frame

post on April 23, 2015

For almost of the frequency radio apparatus, the Printed Circuit board must design the shielding frame/can to prevent the EMI (Electromagnetic Disturbance Interference) effect. The regular design will apply one shielding frame to mount on PCB by solder and another … Continue reading →

Design, SMT, Soldering     WorkingBear    Views (6,882)     comment (0)

Apr23
How We Solved the Keypad Sensitivity Issue by Switching to a 3-Dimple Metal Dome Design

post on April 23, 2015

In my previous post, I mentioned that our company once used metal domes without dimples as the keypad contact solution—similar to what’s used in some cell phones. However, we soon ran into a problem: the keypads were not sensitive enough … Continue reading →

Design, Keypad, Quality     WorkingBear    Views (5,682)     comments (2)
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Apr22
The Importance of Dimples in Metal Dome Keypads

post on April 22, 2015

Recently, our company introduced metal dome technology as a contact solution for rubber keypads, a trend also seen in many cell phone keypad designs. The advantages of using metal domes include a better key press experience, extended lifespan, and improved … Continue reading →

Design, Keypad, Quality     WorkingBear    Views (6,489)     comment (0)

Apr22
HotBar FPC Design Notices

post on April 22, 2015

The HotBar soldering is a kind of selective soldering solution where connect two pre-fluxed, solder coated parts by pulse heating element, call a “thermode”, with proper temperature to melt the solder and re-solder. Applying a pressure and contacting on the … Continue reading →

Design, PCB/FPC/PTF     WorkingBear    Views (12,624)     comment (0)
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Apr21
Design Guideline for Flex cable(FPC) Trace Pattern

post on April 21, 2015

Many FPCB designers may not be well-versed in the manufacturing process and its limitations. Workingbear have often come across designs that don’t meet DFx requirements, where designers insist on their approach, leading to numerous quality issues during mass production. In … Continue reading →

Design, PCB/FPC/PTF, Quality     WorkingBear    Views (6,086)     comment (0)