Trying to identify PCB material

[zdr]

Some time ago a bought somewhere a superb looking quality copper clad board, almost fully transparent and quite shiny and greyish, like a smoked glass. Problem is, I don't remember where and it was probably a random purchase. Any idea what that could be? I can post a photo later when I get home.

 

[zdr]

This is what I am talking about; on top is the usual, cheap, greenish one, bottom two are almost like shiny smoked glass...

 

[richie00boy]

I have got both types here in stock. The yellow one is coated with photoresist and the nice one is plain copper. I have never seen the nice type with photoresist though. One strange thing is both materials come from the same supplier with the same spec, apart from the photoresist of course.

 

[Steve Eddy]

I have got both types here in stock.

Wouldn't happen to know where to get the old, brown paper/phenolic copper clad board, would you?

se

 

[zdr]

Can you send me some photos, sizes and prices with shipping to Belgium please, for "nice" ones

zdravke(append google mail)

 

[richie00boy]

Wouldn't happen to know where to get the old, brown paper/phenolic copper clad board, would you?

se

Sorry not seen that for a while and doesn't it go all brittle after a decade or two? The closest I've seen to it is a paper composite copper clad board, which drills and cuts extremely nicely.

 

[Steve Eddy]

Sorry not seen that for a while and doesn't it go all brittle after a decade or two?

Can't say for sure other than I have some of it in some 40+ year old stuff I have here and it doesn't seem to be terribly brittle.

The closest I've seen to it is a paper composite copper clad board, which drills and cuts extremely nicely.

Know where I can find more details on that?

Thanks!

se

 

[richie00boy]

Know where I can find more details on that?

Thanks!

se

It's actually sold as an economy board. Very lightweight too.

 

[mjf]

hello.
i think conrad in germany has paper composit copper clad boards (hartpapier,hp-platine ,hp).
search for hartpapier - platinen or so..........
sorry it is only in german........datasheet:

http://www.produktinfo.conrad.com/datenblaetter/525000-549999/528382-da-01-de-Hartpapier_Platten.pdf

greetings

 

[Steve Eddy]

It's actually sold as an economy board. Very lightweight too.

Ah. Sounds like what Vector sells in pre-sensitized sheets. However they only offer it in 1/32" thickness. Too thin for my purposes.

Thanks!

se

 

[Steve Eddy]

hello.
i think conrad in germany has paper composit copper clad boards (hartpapier,hp-platine ,hp).
search for hartpapier - platinen or so..........
sorry it is only in german........datasheet:

Thanks!

se

 

[richie00boy]

Ah. Sounds like what Vector sells in pre-sensitized sheets. However they only offer it in 1/32" thickness. Too thin for my purposes.

Thanks!

se

The stuff I've had is 1.6mm like a normal PCB.

 

[zdr]

eBay seller identified my "nice" pcbs as "non-UV blocking laminate". I think that mine was covered with photo resist.

 

[Juergen Knoop]

hello.
i think conrad in germany has paper composit copper clad boards (hartpapier,hp-platine ,hp).
search for hartpapier - platinen or so..........
sorry it is only in german........datasheet:

http://www.produktinfo.conrad.com/datenblaetter/525000-549999/528382-da-01-de-Hartpapier_Platten.pdf

greetings

zdr's picture shows an ordinary glass-epoxy board, no phenol-paper!
The photoresist has no impact on the final colour, if removed with acetone.
regards

 

[mjf]

yes,the answer was adressed to steve eddy's question...........
hallo...........die antwort war für steve eddy gedacht...........
grüsse

 

[Juergen Knoop]

ok, my fault...
regards

 

[marce]

SE
I would look for manufacturers suppliers of CEM PCB's. Not used as much these days, as FR4 boards can be purchased for the same price, with much better proerties.
CEM-1 (CEM1)- composite for PCB's - Order Online

The two boards photographed will be FR4 based, this comes in different qualities and weave patterns, so bare boards will differ in apearance, from cheap and rough looking upwards.

 

[djQUAN]

eBay seller identified my "nice" pcbs as "non-UV blocking laminate". I think that mine was covered with photo resist.

same thing I noticed before that it has something to do with UV.

the greenish stuff glows brightly in UV light while the white stuff stays dark.



re. Paper Phenolic; it's available here in single sided boards. all single sided boards here use that. all double sided boards are in FR4. I couldn't get FR4 in single sided. if I need single sided FR4, I peel off the other side. such a waste.