Labeling PCB for assembly.

bobdude161 wrote:

I'm remaking a PCB design that needs to be assembled at the

manufacturer. I was given a on old PCB design on paper and have

recreated it in Eagle. Where I'm stuck at right now is not knowing

how to properly label the PCB so that the assembler can know where

each component goes. I'm afraid if it's not labeled correctly, diodes

will be assembled backwards or components will be soldered

incorrectly. This is the design so far.

 

>

http://i.imgur.com/BxBGY.png

It's a part for a 1960's Pontiac tachometer.

 

>

The current labeling is not too good for someone who's never seen

this board, but that's what the old design had.

 

>

I skipped the schematic part of the PCB designing, assuming that

since I already have the routing laid out I didn't need it. Is this

wrong?

It's fine to design a board only when it is as simple as yours. You do loose

ERC checking without a schematic but that does not matter here if it

replicates the original design.

You can have as much or little text on your board. Your text may be copper

or screen print, as you wish. Just put it on the appropriate layer.

What you need now is a picture that the assembler can use. Normally you

would have created packages in the library where the shape of the diodes etc

reveal their orientation.

Without these packages, which I suspect is your case, you need to draw  them

in one of the Documentation layers and provide that to the assembler along

the listings of what the parts are.

Alternatively if  you wish to have the board built by a PCB house, with

silkscreen printing (usually white ) to depict the components then draw

these in the tPlace layer

This layer can be included in the documantation to the asembler .

HTH

Warren

--

Viewed / responded via the newsgroup at

news.cadsoft.de

bobdude161 wrote:

I'm remaking a PCB design that needs to be assembled at the

manufacturer. I was given a on old PCB design on paper and have

recreated it in Eagle. Where I'm stuck at right now is not knowing

how to properly label the PCB so that the assembler can know where

each component goes. I'm afraid if it's not labeled correctly, diodes

will be assembled backwards or components will be soldered

incorrectly. This is the design so far.

 

>

http://i.imgur.com/BxBGY.png

It's a part for a 1960's Pontiac tachometer.

 

>

The current labeling is not too good for someone who's never seen

this board, but that's what the old design had.

 

>

I skipped the schematic part of the PCB designing, assuming that

since I already have the routing laid out I didn't need it. Is this

wrong?

It's fine to design a board only when it is as simple as yours. You do loose

ERC checking without a schematic but that does not matter here if it

replicates the original design.

You can have as much or little text on your board. Your text may be copper

or screen print, as you wish. Just put it on the appropriate layer.

What you need now is a picture that the assembler can use. Normally you

would have created packages in the library where the shape of the diodes etc

reveal their orientation.

Without these packages, which I suspect is your case, you need to draw  them

in one of the Documentation layers and provide that to the assembler along

the listings of what the parts are.

Alternatively if  you wish to have the board built by a PCB house, with

silkscreen printing (usually white ) to depict the components then draw

these in the tPlace layer

This layer can be included in the documantation to the asembler .

HTH

Warren

--

Viewed / responded via the newsgroup at

news.cadsoft.de