Dear customers, Please kindly have an alert that according to our project experience, we foresee that many ICs will be in very tight supply or even out of stock for a long time, so please schedule your crucial projects of 2021 beforehand. : For more details, please have an alert to this news, down load Electronic Components Price Increase Reminder_Weller Technology Co., Limited

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

What is the PCB trace impedance,and how to calculate it?

PCB trace impedance is the sum of all the resistance and reactance components of an electrical signal path. An ideal transmission line must have a characteristic impedance that matches both the transmitter and receiver of the intended signal. If the characteristic impedance of the matched transmission line is faithfully maintained, then the full signal sent … Continued

Analysis of the types and differences of FPC

With the development of high-end, miniaturized electronic products such as mobile phones, notebook computers and PDAs, the demand for flexible boards is increasing, and PCB manufacturers are accelerating the development of thinner, lighter and denser. 1.Single-layer FPC It has a layer of chemically etched conductive pattern. The conductive pattern layer on the surface of the … Continued

Potting resins in PCB electronic assembly

WellerPCB as a China Printed Circuit Board manufacturer and your offshore PCB Manufacturer has several years of experience successfully manufacturing PCB’s that are RoHS compliant and are compliant with lead-free assembly. We offer a variety of laminate and surface finish options.

What is high Tg PCB (printed circuit board)

What is high Tg PCB (printed circuit board) TG’s meaning in PCB specification is glass-transition temperature, which is an important character of the PCB base material. In recent years, there are more and more customers requesting to manufacture PCB with high Tg. In the following we would like to describe what is high Tg PCB … Continued

Stamp Hole-One PCB Panel Way for PCB Assembly

WellerPCB as a China Printed Circuit Board manufacturer and your offshore PCB Manufacturer has several years of experience successfully manufacturing PCB’s that are RoHS compliant and are compliant with lead-free assembly. We offer a variety of laminate and surface finish options.

Tips of multi-layer PCB impedance line routing

The meaning of PCB impedance ? The meaning of PCB impedance ? PCB impedance is the combination of the capacitance and inductance of a circuit when operated at high frequency. Though also measured in Ohms, it is somewhat different than resistance which is a DC characteristic. Impedance is an AC characteristic, meaning that it is … Continued

Why schematic drawing is necessary to PCB assembly?

WellerPCB as a China Printed Circuit Board manufacturer and your offshore PCB Manufacturer has several years of experience successfully manufacturing PCB’s that are RoHS compliant and are compliant with lead-free assembly. We offer a variety of laminate and surface finish options.

How to correctly specify PCB impedance to PCB board manufacturer.

What is controlled impedance? Probably the most common example of a controlled impedance component is the downlead (or feeder) connecting a receiving aerial to a wireless or television set. Aerial feeder leads usually take the form of “flat twin” cable (commonly supplied with VHF broadcast receivers) or low-loss coaxial cable. In both cases the impedance … Continued