Chengyi Electronics (Jiaxing) Co., Ltd

  In the realm of printed circuit boards (PCBs),  surface finishes  play a pivotal role in determining the overall performance, reliability, and longevity of electronic devices. Among the myriad options available, HASL (Hot Air Solder Leveling), OSP (Organic Solderability Preservative), and ENIG (Electroless Nickel Immersion Gold) stand out as the most commonly employed surface finishes. Each presents a unique set of characteristics and benefits, catering to diverse application requirements. In this comprehensive guide, we delve into the intricacies of each surface finish, offering insights to aid in informed decision-making. Understanding HASL (Hot Air Solder Leveling) HASL  characterized by its simplicity and cost-effectiveness, remains a popular choice for PCB surface finishing. The process involves immersing the PCB into a bath of molten solder, followed by a blast of hot air to remove excess solder, leaving behind a uniform coating on exposed...

  Choosing the surface finish is an essential step in the design of your printed circuit boards. The PCB surface finish helps protect copper circuitry from corrosion. It also provides a solderable surface for your components. There are a number of factors to consider, including: The components you use Your expected production volume Your requirements for durability Environmental impact, and Cost Below are 5 types of PCB surface finishes, along with their benefits and drawbacks. Finish Type #1 – Hot Air Solder Leveling (HASL) “Hot Air Solder Leveling” is the least expensive type of PCB surface finish. It is widely available and very economical. The board is dipped in molten solder and then leveled off with a hot air knife. If you’re using through-hole or larger SMT components,  HASL  can work well. However, if your board will have SMT components smaller than 0805 or SOIC, it is not ideal. The surface is not completely level, so this can cause issues with small components. ...