All Questions
Tagged with manufacturing pcb-design
11
questions
6
votes
7
answers
2k
views
Automatic serial number on a PCB
Imagine you're printing 10 PCBs and you want each PCB to have its own serial number, but you want to add the serial numbers automatically from Kicad. Is this possible or not? Does it depend on the ...
- 316
22
votes
4
answers
2k
views
Environmentally sustainable electronics
I am part of my company's work to become more environmentally friendly and sustainable. On a high level for the company that means pursuing ISO certifications (such as ISO 14001) and working according ...
- 607
4
votes
2
answers
1k
views
Placing through hole and SMT on the same side
I have a design with huge push buttons (with 6 TH holes.)
There's a few of them so they do take up quite a bit of space mechanically from the top.
I was thinking of placing the majority of the SMT ...
- 757
0
votes
0
answers
98
views
Reducing Thermal Pad Size Below Official Footprint - Can It Create Manufacturability Problems?
I'm using a DP83867 Ethernet chip by Texas Instruments in an S-PQFP-G64, 10 x 10 mm package, the mechanical dimension and its recommended footprint are shown at the end of the question. As shown, the ...
- 7,218
-1
votes
1
answer
1k
views
In Altium Why My Square slot is shown round in Gerber?
In Altium I have created a square slot in PCB then I create the gerber files.
In CAM, file's square slot is shown as round shape.
Can anyone explain why?
Also I have enabled the G85 command.
- 69
0
votes
1
answer
339
views
STM32F103xxxx VFQFPN 36 pin package thermal pad, isolated or tied to ground?
Currently designing a PCB based on the STM32F103. The package is a VFQFPN 36 pin package, which also has a large thermal pad. The datasheet for this part does not appear to indicate a pin number or ...
- 690
1
vote
1
answer
5k
views
Which minimum tracking/spacing size is actually required for a 0.2mm gap between LQFP leads?
I am uncertain as to the manufacturing specifications that I will need for a PCB I am hoping to get produced. The most complex component is the MCU (STM32151RCT) which has a recommended footprint for ...
- 49
3
votes
1
answer
317
views
What kind of patterns are used to mark a PCB?
I would like to create a pattern for my PCB. I would like to update the pattern with changes in BOM, external interface, software, changes in pads. I would like some suggestions of patterns used in ...
4
votes
1
answer
1k
views
From what pitch should I consider ENIG finish
My design (4-layer, FR4, 1.6mm) has a couple of ICs with 0.5mm pitch pads and some LEDs with 0.4mm pitch pads, very small LEDs.
Should I consider ENIG (more expensive) or will HASL do the job?
I read ...
- 2,117
6
votes
1
answer
1k
views
Should I avoid BGA?
I am designing a board and have found that a BGA component is cheaper than the larger footprint. I am curious if I should be reluctant to implement a BGA with regard to extra steps during ...
- 533
6
votes
1
answer
848
views
How do PCB fabrication houses make PCBs?
I know the different ways of making PCBs at home, but I can't seem to find a lot of information on how board houses professionally make their PCBs. Is this how they do it?: http://www.youtube.com/...
- 4,546