Homebrew PCBs

Hello,

I am looking for someone who can help me build some some very simple PC 
boards.  These boards would be used to install lighting in N scale model 
trains. The boards would only have to accommodate a surface mount 
resistor and two 2mm x 3mm LED's. Total size of the board is about 3/8" 
x 3/8 " (approx).  Inputs to the board are a common for the cathode side 
if LED's with the resistor (need to drop from 14dvc to 3.6vdc) and two 
individual feeds for the anode side of the LED's to connect the 30 gauge 
wire feeds. I am hoping to find someone who can give me some simple and 
direct input on 1) materials for me to quickly and simply construct 
these boards one at a time as needed or,  2) is willing to construct the 
boards ( I will mount the components) for me at a nominal fee in small 
lot sizes on a periodic basis.  Thank you.

Steve

Hello,

I am searching the name of this kind of pcb that they use for computer
keyboards, it is flexible and transparent with brown/grey traces. I am
searching a manufacturer for some proto (so small batch) and if somebody
happens to have that, a design guide (like maximum Amps/Voltage according to
track size).

Thanks.

No virus found in this outgoing message.
Checked by AVG. 
Version: 7.5.524 / Virus Database: 270.2.0/1493 - Release Date: 09/06/2008
17:25

----- Original Message ----- 

From: "Jerome Decock" <jerome@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Tuesday, June 10, 2008 9:52 AM
Subject: [Homebrew_PCBs] Searching for this kind of pcb


> Hello,
>
> I am searching the name of this kind of pcb that they use for computer
> keyboards, it is flexible and transparent with brown/grey traces. I am
> searching a manufacturer for some proto (so small batch) and if somebody
> happens to have that, a design guide (like maximum Amps/Voltage according 
> to
> track size).

It's just called a 'flexible PCB', you will find several suppliers with 
Google. Development is expensive, and you need large quantities to get them 
at a reasonable price. They should be able to advise on current-carrying 
capacity; it's probably different from normal PCB material because of the 
different thermal characteristics of the substrate.

Leon
--
Leon Heller
Amateur radio call-sign  G1HSM
Yaesu FT-817ND transceiver
Suzuki SV1000S motorcycle
leon355@...
http://www.geocities.com/leon_heller

--- In Homebrew_PCBs@yahoogroups.com, "Jerome Decock" <jerome@...> wrote:
>
> Hello,
> 
> I am searching the name of this kind of pcb that they use for computer
> keyboards, it is flexible and transparent with brown/grey traces. I am
> searching a manufacturer for some proto (so small batch) and if somebody
> happens to have that, a design guide (like maximum Amps/Voltage
according to
> track size).
> 
> Thanks.


If you want to etch them yourself, perhaps LaserPCBs would be right
for the task: www.laserpcb.com

(Disclaimer: I am the owner of laserpcb.com)

I have some 5 mil thick SS clad (0.5oz) I got off ebay.  Once etched
it's pretty flexible (0.5" diam bends) and somewhat translucent, it
might be acceptable for your purposes, but it's not as flexible as
"flex" is.

Advanced circuits does flex protos, but not inexpensively:
http://www.4pcb.com/index.php?load=content&page_id=133

check
http://cgi.ebay.com/Copper-Clad-FR4-PCB-Laminate-Material-Thin-SS-or-DS_W0QQitemZ360059745362QQihZ023QQcategoryZ4660QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
this is 'thin' PCB, no necessarily flex.


--- On Tue, 6/10/08, Jerome Decock <jerome@...> wrote:

> I am searching the name of this kind of pcb that they use
> for computer
> keyboards, it is flexible and transparent with brown/grey
> traces. I am
> searching a manufacturer for some proto (so small batch)
> and if somebody
> happens to have that, a design guide (like maximum
> Amps/Voltage according to
> track size).
> 
> Thanks.
>