#emscompany

[angelnewsindia]

Cyient DLM Announces Acquisition of Altek Electronics, a Leading EMS Company in the U.S.

[oureastindiatechnologies-blog]

Avoiding interruption to the electronics manufacturing supply chain - EITPL

Avoiding interruption to the electronics manufacturing supply chain is a progressing task that can be laden with difficulties.

Electronics manufacturing supply chain is a progressing task that can be laden with difficulties whether it’s alleviating the effects of catastrophic events, foreseeing changes in cost, dealing with the impacts of geopolitical unsteadiness or turning away the risk of cyber-attacks.

[grandepcba]

What are the things to be verified in the PCB gerber files?

Here are four things to be verified in the PCB Gerber File:

1.Whether PCB and schematic are correct or not—to generate the IPC netlist file;

2.Whether the design parameters meet the production process requirements or not;

3.Whether the PCB manufacturing files are complete and the PCB size is correct or not;

4.Whether the process edge, the location hole and fiducial mask are added or not;

http://www.58pcba.com/index.php?id=700

[grandepcba]

What are the different types of electronic sensors?

The sensor is generally composed of such three parts: A sensing element, a conversion element and a measuring circuit; And sometimes an auxiliary power source is also added.

There are three commonly used electronic sensors:

1. According to the physical quantity of the sensor, it is classified as displacement, force, speed, temperature, flow, gas composition and other sensors.

2. Based on the working principle of the sensor, which is classified as resistor, capacitor, inductor, voltage, Hall, photoelectric, grating, thermocouple and other sensors.

3. In the light of the nature of the sensor output signal, that is the switch type sensor whose output is the switch quantity ("1" and "0" or "on" and "off"); The output is an analog sensor; And the output is a digital sensor with a pulse or code.

http://www.58pcba.com/index.php?id=654

[grandepcba]

Which sites provide PCB packaging?

1. Official website of the components brand: The components specification data including packaging information will be provided on it;

2. Third-party platforms: Specifications and packaging information of components will also be provided on such platforms;

3. Authoritative reference files: Including packaging information of common components of PCB;

http://www.58pcba.com/index.php?id=638

[grandepcba]

Why are vias needed in electronic circuits?

Honestly, it mainly refers to the function of vias. As you probably know, vias are mainly used to connect lines of each layer. That’s to say, after metallizing treatment, the circuit boards on both sides of vias are connected together.

For example, in the multilayer circuit board, for the same vias, if certain layers need to be connected, then vias on these layers is going to be metallized; But what if the layer of lines do not need to be connected? Correspondingly, the vias of the layer won’t be metallized.

http://www.58pcba.com/index.php?id=635

[grandepcba]

How can PCB trace have 50 ohm impedance regardless of length/ signal frequency?

You know, when it comes to PCB trace need to control impedance as 50 ohm, which is mainly determined by the signal parameters such as line width, line spacing, copper thickness, reference plane and dielectric thickness on the current PCB.

PS:  There are virtually six factors affecting impedance:

W------ line width/line spacing; The impedance decreases with the increase of line width, and the impedance increases with the increase of distance;

H------ insulation thickness; As thickness increases, impedance increases;

T------ copper thickness; Copper thickness increases while impedance decreases;

H1----- solder mask thickness; Thickness increases while impedance decreases;

Er----- dielectric constant, reference layer; DK value increases while impedance decreases;

Undercut-----W1 - W2; Undercut increases and impedance increase.

http://www.58pcba.com/index.php?id=631

[grandepcba]

What is a BNC connector used for?

As you probably know, BNC connector is actually one of the common RF connectors, which is a small bayonet-type connector that are able to realize fast connection.

In addition, the signal frequency supports range of BNC connector that is from 4-4GHz; And whose characteristic impedance has 2 types: 50 ohms and 75 ohms.

Besides, BNC connector is widely used to wireless communication system, TV, test equipment and other RF electronic equipment.

http://www.58pcba.com/index.php?id=632