PCB developing process after solder resist
Dec. 16, 2021
The solder resist development process in the printed board is a relatively simple process among all processes of the printed board, but it also plays …
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Dec. 16, 2021
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Common fault analysis of PCB alkaline etching
Dec. 13, 2021
The possible reason of precipitation of etching solution in printed circuit could be the ammonia content is too low, or water dilution excess, or the …
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Precautions of wet film application in PCB production
Dec. 09, 2021
The circuit pattern we need is finally obtained by etching. The etching solution can be alkaline ferric chloride, acidic copper chloride and ammonia.D…
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Analysis of exposed copper in hot air solder leveling(HASL) process
Dec. 09, 2021
Hot air leveling is to immerse the printed circuit board into the molten solder (63Sn / 37Pb), and then blow off the excess solder on the surface of t…
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Advantages of wet film in PCB production
Dec. 03, 2021
The wet film itself is a blue viscous liquid synthesized from photosensitive resin and added with photosensitive agent, pigment, filler and solvent.
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How many types of PCB ink and its functions ？
Nov. 29, 2021
PCB ink is generally divided into three types: PCB etching ink, solder mask ink and text ink. Others are conductive carbon oil (also known as conducti…
