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PCB surface finishing

How to choose surface treatment process for PCB

How to choose surface treatment process for PCB between HASL, gold plating and immersion gold. The choice of surface treatment process depends mainly on the type of component that is finally assembled. And the surface treatment process will affect the production, assembly and end use of the PCB Surface treatment purpose The most basic purpose … Continued

How To Set-up Trace Corners in PCB Layout

How to set-up PCB track (routing) corners in PCB layout? Which is better option, 45° corner or rounded corner? Can be layout as 90° corner? The trace corner of high-speed track is always a hot topic when we talk PCB design and layout. A lot of PCB designers have the opinions of that high speed … Continued

What is RoHS Compliance?

RoHS is known as Directive 2002/95/EC, originated in the European Union in 2002 and restricts the use of six hazardous materials found in electrical and electronic products, which stands for Restriction of Hazardous Substances, and impacts the entire electronics industry and many electrical products as well. The original RoHS, also All applicable products in the EU … Continued

PCB wave soldering assembly process

What Is Wave Soldering PCB Assembly

What Is Wave Soldering? Wave soldering is a classic THT soldering process used for mass PCB assembly production containing through-hole-technology components. In this in-line process, a printed circuit board is passed through a wave solder machine with the solder material pre-loaded in, and the machine controls the height of the standing molten solder wave as … Continued

PCB Assembly AOI

PCB Assembly Conformal Coating

Conformal coating process in PCB assembly process is a type of surface finishing with a thin acrylic film applied over the assembled circuit board to protect electronic circuit board from corroding. Typically applied at thickens of 25-250 μm (micrometers) it is applied to electronic circuitry to act as protection against moisture, dust, chemicals, shock and … Continued

PCB design layout guideline for electronic engineers

Top 12 Considerations to Know Before PCB Layout

High quality of PCB design or layout will take much convenience to PCB fabrication & manufacturing process, and improve the ratability of the SMT assembly process The guidelines shown here are focused in a few key points that will help you with routing, manufacturability, basic signal integrity, and PCB assembly. 1. The spacing size between … Continued

HAL and immersion gold PCB

The PCB surface finishing difference between HAL and ENIG

PCB surface finishing technology When surface finish (also called surface coating) defined to a PCB it means an intermetallic joint between the exposed bare copper of the solder-able area of the circuit board and the electronic components, this excluding the area of solder mask. Printed circuit boards without a protective coating would be susceptible to … Continued

PCB-manufacturing-specification

What is the difference between IPC-6012, IPC-A-600, and IPC-A-610?

Specifically, both specification of the IPC-A-6012 and the IPC-A-600 are guiding documents made for the bare printed circuit boards. IPC-A-600: is a specification and document for the inspection criteria of PCB, which is a the visual representation of the IPC-A-6012 document. IPC-A-6012: is a guiding document for the PCB manufacturing process. IPC-A-610: is a guiding document for the acceptability of … Continued

Everything you need to know about PCB assembly conformal coating

A conformal coating is a type of thin polymeric film applied to a PCB (printed circuit board) by machine or by manual in order to have the electronic PCB boards and its components to be protected from the environment and corrosion. Normally, the film is applied at typical thickness of 25-250µm and ‘conforms’ to the shape of … Continued