• September 16. 2021

The metalized half-hole means that after drill hole (drill, gong groove), then the 2nd drilled and shaped, and finally half of the metalized hole (groove) is retained. In order to control the production of metal half-hole boards, circuit board manufacturers usually take some measures due to process problems at the intersection of metallized half-holes and non-metallized holes. Metallized half-hole...

• September 28. 2021

Anyone involved within the printed circuit board (PCB) industry understand that PCBs have copper finishes on their surface. If they are left unprotected then the copper will oxidize and deteriorate, making the circuit board unusable. The surface finish forms a critical interface between the component and the PCB. The finish has two essential functions, to protect the exposed copper circuitry and t...

• October 08. 2021

9. What is resolution? Answer: Within a distance of 1mm, the resolution of the lines or spacing lines that can be formed by the dry film resist can also be expressed by the absolute size of the lines or spacing. The difference between the dry film and the resist film thickness The thickness of the polyester film is related. The thicker the resist film layer, the lower the resolution. When the ligh...

• October 20. 2021

Ceramic circuit boards are actually made of electronic ceramic materials and can be made into various shapes. Among them, the ceramic circuit board has the most outstanding characteristics of high temperature resistance and high electrical insulation. It has the advantages of low dielectric constant, low dielectric loss, high thermal conductivity, good chemical stability, and similar thermal expan...

• October 29. 2021

1. The outer frame (clamping side) of the Printed Circuit Board panel should adopt a closed-loop design to ensure that the PCB jigsaw will not be deformed after being fixed on the fixture; 2. PCB panel width ≤260mm (SIEMENS line) or ≤300mm (FUJI line); if automatic dispensing is required, PCB panel width×length ≤125 mm×180 mm; 3. The shape of the PCB jigsaw should be as close to the square as poss...

• November 05. 2021

SMT(Printed Circuit Board Assembly, PCBA) is also called surface mount technology. During the manufacturing process, the solder paste is heated and melted in a heating environment, so that the PCB pads are reliably combined with surface mount components through the solder paste alloy. We call this process reflow soldering. Most of the circuit boards are prone to board bending and warping when unde...

• November 11. 2021

HDI board, high density interconnect printed circuit board HDI boards are one of the fastest growing technologies in PCBs and now available in ABIS Circuits Ltd. HDI boards contain blind and/or buried vias, and usually contain microvias of 0.006 or smaller diameter. They have a higher circuit density than traditional circuit boards. There are 6 different types of HDI PCB boards, from surface to su...

• November 19. 2021

Printed circuit board is made up of layers of copper foil circuits, and the connections between different circuit layers rely on these "vias". This is because today's circuit board manufacturing uses drilled holes to connect different circuits. Between the circuit layers, it is similar to the connection channel of the multi-layer underground waterway. Friends who have played the "Brother Mary" vid...

• November 24. 2021

What we often refer to is "FR-4 Fiber Class Material PCB Board" is a code name for the grade of fire-resistant materials. It represents a material specification that the resin material must be able to extinguish itself after being burned. It is not a material name, but a kind of material. Material grade, so there are many types of FR-4 grade materials used in general circuit boards at present, but...