Questions tagged [pcb-fabrication]

About the manufacturing of PCBs (Printed Circuit Boards).

Filter by
Sorted by
Tagged with
-5
votes
1answer
186 views

building thin devices, how to get started? [closed]

I want to build thin devices, just as thin as those ipod touches, how do I get started? What courses, what machines, what books?
6
votes
2answers
430 views

Do Pick and Place machines check their work?

For example, if a Pick and Place machine accidentally drops a component, will it realize this and grab an identical replacement? The only reason I can think of as to why it wouldn't do this is to ...
6
votes
1answer
782 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/...
0
votes
1answer
253 views

THS6002 “Dual Differential Line Drivers and Receivers”. Output: 15 MHz

I made ​​a PCB with the THS6002 chip "Dual Differential Line Drivers and Receivers". I copied the application example of figure 59 in the datasheet (page: 34), with three differences: the transformer ...
2
votes
2answers
558 views

PCB printer - etcher

I am looking for a machine for PCB fabrication. Can you help me understanding the type of machines available on the market for a hobbyst use?
19
votes
6answers
5k views

Is it safe to design board at fab houses minimum trace width?

I am working on my first board to have professionally fabricated. Right now I am planning on using seeed studio mainly because they are the cheapest I have found. 10 5cmx5cm boards for $10 is pretty ...
7
votes
3answers
4k views

Is it advisable to use lead-free PCB and solder paste on a first SMD assembly job?

I am sending my first PCB design to Sunstone for manufacture and I need to decide whether to order the board finish lead-free. All of the components are lead-free, and I have not decided on solder ...
3
votes
3answers
2k views

Is FR4 waterproof? What about soldermask?

I'm investigating ways of making a capacitive sensor that will operate in very moist environments, potentially even submerged. What I need is a way to make some conductive plates in a specific ...
0
votes
1answer
2k views

Why can't I find cheap TQFP 44 sockets?

I am trying to find a reasonably priced socket for a TQFP44 microcontroller but I am having a very hard time. The only I found so far is this one: http://uk.farnell.com/wells-cti/7010-044-6-08/...
2
votes
4answers
627 views

Homemade printing and soldering for small components.. the best way

Which is the best way to solder small components such as SOIC or QFP44 packaged components to a PCB without using adapters? And how can I manage to print PCBs with small track distances and widths ...
6
votes
2answers
1k views

What are the long term effects of Organic Surface Protection (OSP) on PCBs?

I've just received a batch of assembled PCBs where the manufacturer changed the previously used HAL-process to OSP. Now there is a lot of open copper on the pcb, like on big inductors which "suck" a ...
13
votes
5answers
15k views

Filling vias and holes on custom pcb

I've made my first ever pcb myself and the etching and drilling all look pretty good at this point. I am still not sure, however, what to do about the vias. I have about 15 holes that I need to make ...
28
votes
6answers
16k views

High PCB copper thickness: What are the pitfalls?

We need to carry high currents on a PCB (~30Amps sustained), so we are likely to order our PCBs with high copper thickness. So far we've only used 35 microns (1 oz) in our designs, so 'high thickness' ...
0
votes
2answers
1k views

Substitute for LM2937 (5v to 3.3v) regulator

I made a fatal mistake of designing a pcb without checking the availability of the component in my locality(lm2937 3.3v).. Shocked to know that it is not available anywhere in India.. Though I have ...
3
votes
2answers
608 views

Clothes Iron Toner Transfer

I'm looking for advice on my DIY PCBs. For some reason the toner transfer step never goes perfectly. I have attached some images to show you what I mean. Is my iron not hot enough perhaps? Also, are ...
3
votes
4answers
7k views

Eagle CAD: PDF scaling problem? (tone transfer method)

First of all, how do you export your layout to PDF in order to create the PCB using tone transfer method? In the past I created one small PCB by doing the following: print > PDF format (scale=1). No ...
3
votes
1answer
5k views

DIY solder mask + toner transfer

so I've gotten a decent 1 layer toner transfer process down and I'm looking to add some nice touches to it before I move on to trying 2 layer boards. Anybody know how to do a nice silkscreen layer or ...
1
vote
4answers
741 views

Preprogrammed IC

I'm curious about the PCB manufacturing, How are they manage the IC preprogramming? For example I had designed a PCB, I sent to the manufacturer company, do they preprogramming my microcontroller if ...
3
votes
2answers
3k views

Is it possible to print on 0.035 mm copper foil with a laser printer?

I have seen 0.035 mm copper foil. Until now I have used toner transfer method to etch my PCBs. If one could print on this foil directly it would be almost to good to be true. Any experience or ...
2
votes
1answer
1k views

I need help with Eagle CAD how do you edit silk screen how to add copper to the empty spaces

Like the title describes, these are two things I need to know how to do in eagle. Any pointers? Thank you. P.S. if anyone knows a tricky way to get an image into the silk screen it would be ...
15
votes
3answers
10k views

BGA escape via dimensions at 0.8mm pitch?

Are there any kinds of standards or common practice dimensions which define what BGA escape vias and routing trace/space should look like at 0.8mm pitch? If not, what's the most economical set of ...
0
votes
1answer
2k views

How to use blue press and peel transfer foil for PCB etching?

I decided to try etching my own PCBs and I got some blue press and peel transfer foil. It has shiny and matte side. I'm supposed to print on one side and iron the other, but the procedure of ...
5
votes
4answers
1k views

Low-cost PCB prototyping [closed]

I work in a research lab where we occasionally need to develop electronic driver boards for quantum cascade lasers. The type of signal these handle are digital data streams up to around 10 MHz and ...
2
votes
1answer
2k views

Toner Transfer + GBC Creative 9 Laminator: GBC Mod Question

After receiving a ton of feedback from this post, I decided to give the old toner method a try once again. I grabbed a GBC Creative 9 laminator off of Amazon for $23 and am now looking to modify it to ...
1
vote
3answers
1k views

Using a heat gun to transfer toner onto DIY PCB?

Is it possible/practical to use a heat gun instead of an iron to transfer toner when making your own PCBs? Can you get a uniform heat pattern without for a small board? Is enough heat applied from ...
7
votes
5answers
8k views

Soldermask at home?

I am interested in putting that nice green / red soldermask on the PCBs that I make at home. The problem is I can't find a lot of information on it, like where to buy it, etc. Do any hobbyists ...
3
votes
3answers
13k views

How to convert PDF to Gerber for PCB layout?

I've got a PDF file with a PCB layout I'de like to produce - however, I need the file in Gerber format first. Is there an easy way to convert between the two? I've found this: https://swannman....
12
votes
4answers
4k views

What standard PCB notes should I use?

I have seen wide varieties at previous companies, from too few to too many with boilerplate, old revisions of standards, etc. Can you suggest a middle of the road list? This is for regular PCB ...
4
votes
3answers
481 views

Improving ease-of-soldering in home-made boards

I am making a PCB with a subtractive PCB mill, and I am having difficulty soldering some components to the finished copper. The solder isn't flowing onto the traces easily, and by the time it does ...
110
votes
8answers
36k views

Best One-Off DIY PCB Creation Technique

I have finally built up a lab to design electronics in. I have quite a few designs I would like to test. I have tried the printer toner/iron technique a few times but have found that I cannot create ...
-1
votes
1answer
590 views

Recad laptop motherboard PCB?

I have taken an interest in a current effort to create a (mini- or micro-) ATX motherboard with a custom CPU. But ideally, I would want this system in a laptop instead. I got this idea, how hard ...
2
votes
1answer
280 views

Photoresist for PCB patterning

Anybody has reference of the what chemicals photoresist for PCB patterning are made of? I would like something as specific as possible. No brand names please. Peer reviewed papers would be awesome.
3
votes
5answers
3k views

What's Special about Resist Pens?

Just what is special about the resist pens used to draw directly on PCBs before etching? Would a permanent marker work as well, or some other kind pen or marker? Naturally I have in mind something ...
20
votes
6answers
84k views

Standard via sizes?

Is there a standard for via sizes, or can you make them any size you want? (I'm going to be using traditional PCB houses to manufacture my PCB's.)
3
votes
3answers
609 views

General tips for 4 layer boards

For my Super OSD Pro project (Super OSD is divided into two versions: Lite and Pro) I'm going to be using a 4-layer board. Are there any gotchas to be aware of when using 4 layer boards? I was ...
7
votes
5answers
13k views

How close is too close for traces on a PCB?

Are these traces too close for conventional PCB manufacture? DRC check advises against it, but I haven't filled out all the settings for it. For scale, the resistors are all 0603.
9
votes
5answers
477 views

Launching a new product as a student

I'm a student living in the UK. I have this great idea for a product that fills a niche market and it interests me. It's a powerful on screen display module with datalogging capabilities, and it's ...
11
votes
12answers
9k views

Moderately priced 6-layer PCB fab?

I have a board I'm working on with a coworker; we are debating whether to go 4-layer or 6-layer board, and would like to use 6-layer but haven't found a reasonably priced fab house. Is there any ...
18
votes
13answers
5k views

Recommended PCB houses / Assemblers [closed]

Can anyone recommend a good place to go making PCB's? I'm particularly interested in places that also offer assembly, because this makes SMD parts an option. GoldPhoenix is an option, but not the ...
7
votes
2answers
382 views

How can I print a grid of PDF PCBs

I have a PDF of a PCB I want to etch using toner transfer (photo inkjet paper in a laser printer). The design is fairly small, but I have 8.5x11 paper. What I'd like to do is print a grid of the ...
10
votes
6answers
4k views

How much does it cost to etch your own PCBs?

I am at the point that my projects are becoming limited by the space on my breadboard. Rather than buying more, I have decided to look into PCB fabrication. My question is this: is it cheaper to make ...
58
votes
16answers
76k views

How do you cut PCB?

I just spent about 20 minutes trying to cut through a PCB with a hacksaw. These things are really tough. What is the correct tool to cut PCB material, and get a nice straight line? I saw something ...
7
votes
5answers
1k views

PCB etching with transparent film

After etching a PCB I discovered a big spot across some of the traces - probably from a finger. I transferred the PCB layout from a transparent film. What would be the best way to remove "finger" ...
12
votes
7answers
1k views

Custom PCBs… what can go wrong?

I'm anxiously awaiting the delivery of my second set of custom designed PCBs from BatchPCB. The first board I designed was pretty darn simple and didn't have any problems. This second set includes a ...

1 6 7 8 9 10