Questions tagged [pcb-assembly]
The process of mounting electronic components onto a printed circuit board. This can be done manually with a soldering iron, or automatically using a "Pick and Place" machine.
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Is there a standard PCB Array Size for PCB Assembly?
I am planning on use various PCB assembly houses to get my boards PCB assembled. To minimize process costs, I am told it is best to panelize/array the PCB such that there is multiple boards per array, ...
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Half-etched fiducials Vs through-cut fiducials
While making PCB, I added 8 fiducials (fids) marks so that pick and place machines use these marks as referent points on the PCB to position the surface mount components (Packages) during assembly.
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Why did Axial Capacitors Fall Out of Use in the Industry?
When inspecting the boards from electronics made in 1980s and earlier, one distinct feature is the extensive use of axial, electrolytic capacitors as power supply filter. Axial ceramic decoupling ...
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How do I solder headers so that they always stand straight up?
When soldering headers, usually single and double pins, I flip the board over so the pin rests on the surface and then solder them. They never come out straight. It would be great if someone has ...
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How to secure cables to a PCB
What is a good way to secure cables to a PCB?
There are some good advice in the following post, but the application is slightly different:
Securing electrical cables to holes in enclosures?
In this ...
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When and why use triangle solder joints
I found these triangular solder joints in a 24v power supply. Why are they made as triangles? This is the first time I have seen it and I was unable to google anything about it.
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Designing Pick-and-Place-friendly CAD library parts
I'm working on a PCB design with surface mount components to be manufactured by a PCB assembly shop. I'm using CADSTAR, and I had to populate the library with some components, from scratch. I'm new to ...
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OK to connect boards perpendicularly like this?
Are there any disadvantages in using the following method to accomplish a perpendicular board-to-board connection?
(i.e., any disadvantages in terms of
board manufacturing capability/cost
assembly ...
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Any tricks to attaching a wire or pin to a testpoint?
More and more often, I find myself needing to tear apart a device to seek out and connect to serial pads. These pads typically give me access to the underlying operating system for research or ...
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Estimating Assembly Cost
I've got a project BOM costed out and I know my PCB costs. Without sending my project out for quote I'd like to be able to estimate the assembly cost by number of SMT components placed and the number ...
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Feasibility of PCB edge plating?
How feasible is it to edge plate a PCB or at least a portion of one? I've seen it done but as I understand the outer edge is only cut after plating at most fab houses. Is this something that's ...
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Connecting 10AWG wires to PCB
I have 4 wires 10AWG stranded, that I need to connect to a PCB that I'm designing. They will be in a high vibration environment, so direct through hole soldering may not be the best solution.
I've ...
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PCB fabrication vs PCB assembly
What is the difference between PCB fabrication and assembly? Some companies like Golden Phoenix list that based on the size of PCB, it outputs a quote.
Mine was 2.1 x 1.6 inch. It outputted 29 pieces ...
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Is it practical for firmware to be uniquely identified in production
Are there systems available in large scale manufacturing that allow a unique serial number to be programmed into the firmware or some free memory space for each PCB that comes through?
I've found ...
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Anyone know the premise of this PCB assembly note?
The assembly note states:
Bake bare PCBs in a clean and well ventilated oven prior to assembly at 125*C for 24 hours.
Why is this necessary?
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