Andy

/Andy Liu

About Andy Liu

This author has not yet filled in any details.
So far Andy Liu has created 182 blog entries.

Peelable Solder Mask

Peelable Solder Mask  For the partial masking of PCBs as protection from direct contact with solder or as protection in electroplating processes, simple/high-definition application by screen printing, very high elasticity and tear resistance, easy to remove before and/or after the soldering process Peelable Solder Mask PCB is the printed circuit board with peelable solder mask (a temporary solder mask), protected for some area during surface finishing or assembly process. That’s to say, sometimes printed circuit boards require protection of selected board areas during the Surface Finish or Assembly Process to keep solder from flowing onto contacts, terminals and plated through holes (PTH). Peelable [...]

IPC Releases 5 New Standards

IPC announces the release of five newly revised standards covering several areas of the supply chain.   IPC/WHMA-A-620D, Requirements and Acceptance for Cable and Wire Harness Assemblies IPC-2223E, Sectional Design Standard for Flexible/Rigid-Flexible Printed Boards IPC-2591-Version 1.1, Connected Factory Exchange (CFX) IPC-1791A, Trusted Electronic Designer, Fabricator and Assembler Requirements IPC- 6012E, Qualification and Performance Specification for Rigid Printed Boards PURCHASE NOW   Details on some of the changes for the newly released standards:   IPC/WHMA-A-620D provides several changes that were requested by the industry. The task group addressed the target conditions in the document by moving some conditions to acceptable [...]

The benefits of heavy copper PCB fabrication

Heavy copper means the foil thickness of the Printed Circuit Board greater than 3 oz (100 microns or four mils) typically. It is usually used for high electric current supply or some power circuits that are used in the automotive business. It can also be designed in the outer layer or inner layer. The thickness of heavy copper can also vary depending on the manufacturer, but they offer the same purpose. You should always use the best heavy copper PCB with the right thickness because a poor PCB cannot pass the heavy current. So, using a poor quality PCB leads [...]

Why use ceramics for circuit boards?

Ceramic circuit boards are actually made of electronic ceramics material 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 performance, and has the advantages of low dielectric constant and dielectric loss, high thermal conductivity, good chemical stability, and similar thermal expansion coefficient of the component, and Ceramic printed circuit boards are produced using LAM technology, a laser rapid activation metallization technology. Used in LED field, high power semiconductor module, semiconductor cooler, electronic heater, power control circuit, power mixing circuit, intelligent power component, high [...]

2020-03-16T16:32:52+00:00Categories: PCB knowledge|

Flexible PCB Design – Manufacturing – Assembly

Flexible PCB  , Flexible Circuit  or Flex PCB, is designed as a replacement for traditional wire harnesses, Is soft PCB board  compared with Rigid PCB. Flexible PCB can be manufactured as single-sided, double-sided or multilayer plated through printed circuit boards. This allows the complete wiring of compact devices and systems with the advantage that no additional cables or plug connectors will be required. Flex designs pose unique challenges for most PCB tools because traditional object checks don’t account for Flex check nuances. They present a new set of objects that are best accounted for during the design phase. This forces [...]

2020-03-04T17:22:17+00:00Categories: Blog|Tags: , |

PCBA assembly Appearance Inspection Instructions

Printed circuit board assembly (PCB assembly, PCBA), often use abbreviations—— PCBA, is an important electronic parts, is the support of electronic components,the provider of the electronic circuit connection.Because it is produced by using electronic printing technology, it is called "printed" circuit board.Before appears in the printed circuit board, electronic components of interconnection between relied on wires connected directly and form a complete circuit. Now, the circuit bread board only to exist as an effective experiment tool,but the printed circuit board in the electronics industry has become the dominant position. But most people still don't know what is PCBA  appearance inspection [...]

Heavy copper PCB for new engery vehicles

Heavy copper PCB for new engery vehicles Heavy Copper PCB Board does not have a set of definition per IPC. According to PCB industry, peopel generally use this name to identify a printed circuit board with copper conductors 3 oz/ft2 - 10 oz/ft2 in inner and/or outer layers. And Extreme heavy copper PCB refers to 20 oz/ft2 to 200 oz/ft2 printed circuit board. Heavy copper board normally used for a various products but not limited to: high power distribution, heat dissipation, planar transformers, power convertors and new engery vehicles, etc.  

Uses of Ceramic PCB

The ceramic PCB made on ceramic is considered a type of metal core PCB. While other circuit boards such as FR4 PCB or Aluminum PCB can be used for electrical equipment, Ceramic circuit boards provide extra safety. The PCB also keeps the devices risk-free. Typically, Ceramic board is used in the followings: Spotlights and high-current LEDs Exchange converters Power controllers Variable optical systems Power regulators for cars Industrial power equipment Semiconductor refrigeration devices IC arrays Printers Audio amplifiers Solar cell substrates High power transistors and transistor arrays Power applications Ceramic PCB’s high electrical insulation and high-temperature resistance performance refrain electrical [...]

Printed Circuit Board Assembly

Printed Circuit Board Assembly The circuit board before the assembly of electric components is called Printed Circuit Board. After the soldering of all the elements on the board, it is known as Printed circuit Board Assembled. The complete process of component's assembly is called Printed Circuit Assembly or Printed Circuit Board assembly or PCB board assembly. In this process, different automatic and manual assembly tools are used. We are assembler that offer PCB assembly. PCB boards cannot perform any function until and unless its assembly is completed. PCB assembly is a process of assembling and soldering electrical parts on a [...]

Ceramic PCB

Ceramic PCB Hitech Circuits Co., Limited offers ceramic PCB for your printed circuit boards needs. Many users of printed circuit boards find ceramic PCBs have an advantage over traditional boards made of other materials. This is because they provide suitable substrates for electronic circuits that have a high thermal conductivity and a low expansion coefficient (CTE). The multilayer ceramic PCB is extremely versatile and can replace a complete traditional printed circuit board with a less complex design and increased performance. You can use them for high-power circuits, chip-on-board modules, proximity sensors and more. Supply High Thermal Conductivity, Low Expansion Ceramic PCB Besides its enviable thermal [...]