All Questions
Tagged with manufacturing pcb
63
questions
0
votes
2
answers
576
views
Silkscreen covering pads
Im prepparing my 1st pcb for manufacturing, and before i generate the gerbers i wanted to ask some things here fist,
What happens when i put a silk screen like this? a logo big enough to cover the ...
- 1,547
2
votes
1
answer
2k
views
Any better alternative to produce PCB than UV etching
I hope this is an appropriate question to ask it here.
I work for a small start up company that has a limited budget. We have UV box, etching tank, etc from manufacturer like Mega UK.
Our problem ...
- 3,305
1
vote
4
answers
1k
views
High precision soldering of through hole components
I have a through hole component with many leads spaced closely together, see picture:
I'm looking to unsolder it from the PCB and then solder it back again. Unfortunately, the leads are spaced so ...
- 65
0
votes
2
answers
414
views
Is quality China manufacturing possible without being there? [closed]
I'm looking for some help with manufacturing in China with respect to PCB fabrication and assembly, plastic injection molding and metal forging/brushing.
Common wisdom in our days is that one HAS to ...
- 81
0
votes
2
answers
327
views
Do any commercially available generic circuits use only discrete components? [closed]
I'm currently toying with embarking upon a totally crazy hobby project, which would prohibit the use of any component that cannot be 100% verified manually: obviously this completely rules out all ...
- 185
5
votes
1
answer
214
views
100-Pin QPF on top and bottom of PCB?
Can one place large packages (QFP-100) on top and bottom side of (same) PCB?
Of course I could hand-solder them but since I also have some small QFN packages I suspect will need to use reflow ...
- 1,845
21
votes
2
answers
14k
views
How are vias made commercially?
How are or were vias made commercially?
Wikipedia (http://en.wikipedia.org/wiki/Via_(electronics)) mentions
"The hole is made conductive by electroplating, or is lined with a tube or a rivet"
Can ...
- 418
1
vote
1
answer
429
views
pcb etching paper and copper board
I would like manufacture a very simple one layer board to learn how a PCB is manufactured. I prepared the layout of the circuit on Eagle Cad, and am planning to use acid etching method: use iron to ...
- 738
14
votes
1
answer
28k
views
Solder Mask and Cream in Eagle
I've got this part specification for the Paste Mask excerpted from the datasheet:
There's a lot of lingo in this short paragraph that I would like to better understand conceptually. Specifically I ...
- 22.8k
3
votes
2
answers
7k
views
What type of silkscreen ink is used in PCB manufacturing?
Let's say I'm looking to start my own PCB manufacturing company* and I have everything figured out except how to silkscreen the boards.
Where do I get silkscreen ink from?
Is there a special type ...
- 3,771
8
votes
5
answers
4k
views
No silkscreen on board? How common is that? What are the advantages?
I'm a young engineer and I just started at my second job. I was surprised to see that the PCBs have no silkscreen. I'm currently working on the redesign of a PCB currently on the field and I'm ...
- 187
35
votes
2
answers
3k
views
What's the purpose of this checkerboard pattern?
This gigabit Ethernet NIC has a checkerboard pattern out of copper etched on the PCB:
Each square is electrically isolated. What's the point of adding these? I guess that the PCB isn't filled with a ...
- 635
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
18
votes
5
answers
17k
views
Plated Through Hole at home?
Is it possible to make PTH (Plated Thorugh Hole) at home?
Can somebody explain the procedure?
- 315
9
votes
2
answers
12k
views
Rounded corners in Cadsoft Eagle
I am sending off a pcb for manufactering, but it would be nice to round off the corners for them to mill off.
How can I make nice rounded corners? I have used the three point arc thing before but I ...
- 375