Author Archives: RCY

Surface treatment in PCB industry (ENEPIG)

8.Electroless Nickel Electroless Palladium Immersion Gold (ENEPIG) Compared with ENIG, the ENEPIG has added a layer of palladium between nickel and gold. Palladium can avoid the corrosion caused by the substitution reaction, and make full preparation for the immersion gold. Merits: Suitable for lead-free soldering. The surface is very smooth and suitable for SMT. Storage […]

Surface treatment in PCB industry(I-Ag)

7.Immersion silver Immersion silver is difficult between OSP and ENIG. Even when exposed to hot, wet, and pollution, silver can keep good weldability but will lose its luster. The I-Ag does not have the good physical strength of the ENIG, because there is no nickel below the silver layer. Merits: Simple process, suitable for lead-free […]

Surface treatment in PCB industry (I-Sn and Hard Gold)

5.Immersion Tin(I-Sn) Due to all solders are based on tin, the tin coating can match any type of solder. The surface finish immersion tin can form a flat between copper and tin, this feature enables the sinter to have the same good weldability as the hot air leveling, without the headache of the unfitness in […]

Surface treatment in PCB industry (ENIG)

4.Electroless Nickel/Immersion Gold (ENIG) The general process of ENIG is: Acid cleaning -> micro etching -> presoaking -> activation -> electroless nickel -> immersion gold.There are six chemical channels in the process, involving nearly 100 chemicals, and the process is a little complicated. The ENIG is coated with a thick and electrically nickel-gold alloy that […]

Surface treatment in PCB industry(OSP and flash gold)

2.Organic Solderability Preservatives(OSP) The general process of OSP process is: degreasing -> microcorrosion -> pickling -> pure water cleaning -> OSP coating -> cleaning.The process control is relatively easy to others. OSP is a process that meets the RoHS directive requirement for PCB surface finish. It has anti-oxidation, thermal shock and moisture resistance, which can […]

Surface treatment in PCB industry (HAL and LFHAL)

With the continuous improvement of the living environment, the environmental issues involved in PCB production are getting more and more attention, especially Lead and Bromine. The basic purpose of PCB surface treatment is to ensure good weldability and electrical performance. Because the copper is unlikely to remain the original for a long time exposed in […]

A new type of headset can read ideas from your brain

Voice technology has always had a prominent problem: you will feel a bit strange with yourself when you talk to someone. However, technology continues to rise under the people’s demands, people have less self-awareness of their machines when they in conversations. Any non-language device is an inevitable trend, it accomplishes work in a similar manner, […]

PCB factory Trident Q2 revenue hits a high record

Thailand’s second-largest PCB maker Trident publishes an announcement in June, new orders and new customers continue to inject, coupled with ongoing new PCB factory capacity out, monthly revenue soared high, reaching 641 million yuan. The monthly increases 5.6% annual growth of 25.2%, the new high record for a single month, the cumulative second-quarter revenue will […]

Flex PCB and Rigid-flex PCB

Flexible PCB or FPC is a patterned arrangement of printed circuitry and components that utilizes flexible-based material with or without flexible coverlay. These flexible electronic assemblies may be fabricated using the same components used for rigid printed circuit boards, but allowing the board to conform to the desired shape (flex) during its application. Rigid-flex PCBs […]