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What factors determine the actual lifespan of an electronic equipment?

2019-01-09

Main reason: The quality of circuit board and components. Since the mainly hardware of the electronic equipment consists of circuit board and components , which decides to the lifespan of an electronic equipment directly.

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How many lighten points can you put in one circuit?

2019-01-09

In order to make the SMT welding more convenient, the circuit board need to place three fiducial mark in the triangular position of the top and bottom side.

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What is the thermal shock effect on electronic components?

2019-01-08

Actually, there are at least two thermal shocks during the welding and assembly of electronic components, which affect the accuracy and stability of electronic components.

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How is a signal transmitted in a pcb trace?

2019-01-08

As we all know, the signal in a circuit board all correspond to the certain functions, which is also associated with the working state of the corresponding components.

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What is the heavy copper PCB?

2019-01-08

Generally, a layer of copper foil is bonded to the substrate of the PCB. And there are usually four kinds of copper foil thickness, such as 18 μ m, 35 μ m, 55 μ m and 70 μ m; However, some of them need up to be 3oz-10oz or even heavier. Thus these

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Which metal is used to make an aeroplane?

2019-01-07

You know, Mg-Al alloy is characterized by light weight, high temperature strength and wearing resistance, which is the very needed material to the aeroplane fabrication. Thus Mg-Al alloy is used in aeroplanes.

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How thick should a finished PCB board be? Is 0.1 mm OK?

2019-01-07

Here is the common thickness of finished PCB for your reference: Rigid PCB: 0.5mm and 5mm or so; Flex PCB: 0.1-0.2mm around; Ultrathin Rigid PCB: 0.3-0.5mm.

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Which polymer is used to manufacture electric switches, computer disks, etc.?

2019-01-07

It is Polyphenylene Sulfide ( PPS ), which is a special type of engineering plastic of excelled performances and crystalloid colophony.

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How can you remove components from a circuit board without damaging?

2019-01-07

Generally, engineering technicians tend to use such welding tools (like the constant temperature wind guns, small tin furnaces) to remove components smoothly.

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Where can I go to find a catalogue of PCB components and their functions?

2019-01-07

In a narrow sense, BOM list has already included the details of PCB components and their functions, such as relevant part number, description, brand name, quantity, etc. You’d better check the BOM list carefully.

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