Questions tagged [pcb-fabrication]
About the manufacturing of PCBs (Printed Circuit Boards).
731
questions
1
vote
0
answers
40
views
Remove Unused Pad/ Via
I want to make remove unused pad/via at inner layer in order to increase area. But I wonder that does it cause problems in terms of IPC Class-III or PCB manufacturing?
0
votes
0
answers
32
views
How to cover thermal vias in design spark pcb
I am trying to cover the vias on my PCB using the solder mask however when I upload the PCB to a manufacturer's website the vias are not covered. I am using DesignSpark PCB software
There is a post in ...
0
votes
0
answers
34
views
Fusion 360 Board Panelization
I'm working on panelizing a PCB designed in Fusion 360. While I'm aware of external tools for panelizing Gerber files, I'd like to explore options within Fusion 360.
Does anyone know if Fusion 360 ...
0
votes
1
answer
35
views
Is it okay for two pads F.MASK to overlap each other in Kicad
I made a new footprint for XL-0807RGBC-WS2812B based on this datasheet.
When I place this footprint in PCB editor the F.Mask for the pads on this component overlaps each other.
Is this okay?
I assume ...
1
vote
1
answer
42
views
IPC-2221 Min. conductor spacing for low voltage? [closed]
May I have smaller spacing than B1 ( say as 0.05mm) at the conduction spacing if voltage between conductors is around 5V?
I'm curious that IPC conduct spacing of requirement of 0-15V is 0.05mm, but if ...
0
votes
2
answers
86
views
Is it possible to create new footprints and integrate additional components into an already manufactured PCB?
What is the most effective method to do so? I have enameled wire, which seems safer to me due to the insulation. My plan is to cover them with solder mask. However, I have a question: Would it be ...
1
vote
2
answers
120
views
PCB etching just not working, noob needs help
I am trying to DIY make a PCB at home following this tutorial.
There are some problems:
I could not order the stuff from the YouTube description because
Tools & Materials:
-) Photopositive PCB ...
1
vote
4
answers
160
views
What are these hard black dots on PCB? [duplicate]
I have this LCD from Adafruit. On the bottom side, it has these hard black spots, slightly domed. I'm wondering what they are, and how they are produced.
There are clearly traces running to these, and ...
-2
votes
1
answer
62
views
Where can I find the schematic and CAD files of an open source PCB? [closed]
This is a fairly well known power bank fast charging module which is open source. I am unable to find its PCB CAD files on the internet. Can somebody provide it? Even just the schematic would help.
1
vote
2
answers
95
views
KiCAD: remove DNP components from paste layer
We have an adapter board that works as an interface between our own and third-party electronics. Depending on the third-party configuration about a third of somewhat expensive components may be unused....
8
votes
2
answers
1k
views
What is the purpose of exposed copper on certain traces on this PCB?
I recently took apart a DeWalt battery charger. What is the purpose of this particular arrangement of exposed copper on certain traces (mostly on the right side of the image)? These are wide, high-...
0
votes
0
answers
26
views
Gerber X1 to Gerber X2 [duplicate]
I have gerber files from a client. Their extensions are: .fph, .fpl, .pho, .rep, .drl, .lst, .dxf. Of these, I know .drl are the drill files and .dxf is the mechanical drawing. Also, there is a .fph ...
0
votes
1
answer
120
views
How do I change minimum anular ring in vias for different layers in Altium?
I want to send my gerbers to a PCB manufacturer but its manufacturing capabilities force diferrent minimum anular ring for vias in different layers. For outer layers, its 0.13 mm and for internal ...
1
vote
0
answers
71
views
PCB Layout review: ESP-07 with 28BYJ-48 Stepper board
I have used the 28BYJ-48 in conjunction with an ESP8266 in some applications and I thought it would be handy to have pcb made. I want to use JLCPCB including Pick and Place.
The Kicad source code is ...
0
votes
1
answer
64
views
Soldering with SAC on a glass PCB
I’m having trouble getting the solder paste to wet my glass PCBs.
I am using SAC305 solder.
Funny that it works fine on FR-4 but with glass it just balls up.
Maybe it is because glass conducts heat ...