Bungard COTHERM 2,2 W/MK 1X 35#M CU 100X160X1,5 061156E33 Manual De Usuario
Los códigos de productos
061156E33
Bungard Presensitized Base Material
Manual
page 3 / 4
Safety Regulations
When handling chemicals please always wear protective equipment such as gloves and eye
protection. Avoid contact of chemicals with skin, eyes and mucous membranes. Change polluted
clothing immediately. Keep chemicals out of reach of children. If developer solution was swallowed,
immediately consult a doctor recalling 1% lye.
You will receive our special developer in sealed bags with tear notch. Always solve the entire
contents of one bag in 1 liter of water. Never leave opened bags unattended.
The setup solution may be stored in a sealed, clearly marked container of glass, PE or PVC.
For handling precautions of etchant please contact the relevant supplier. Upon request we will send
you safety data sheets for all chemicals that you purchased from us.
protection. Avoid contact of chemicals with skin, eyes and mucous membranes. Change polluted
clothing immediately. Keep chemicals out of reach of children. If developer solution was swallowed,
immediately consult a doctor recalling 1% lye.
You will receive our special developer in sealed bags with tear notch. Always solve the entire
contents of one bag in 1 liter of water. Never leave opened bags unattended.
The setup solution may be stored in a sealed, clearly marked container of glass, PE or PVC.
For handling precautions of etchant please contact the relevant supplier. Upon request we will send
you safety data sheets for all chemicals that you purchased from us.
Disposal
With time and progressive saturation the developer solution loses effect. Spent solution impedes the
development process significantly.
Do not pour previously used developer back into fresh solution. You should therefore use only so
much developer as you need for the job, and replace the developer in the cuvette at the latest, if you
cannot see the pcb in the liquid any more.
The developer for the Bungard presensitized boards is not a photographic developer. It contains no
heavy or precious metals. Characteristic for this developer, as well as the comparable waste water
from dishwashers, is the content of lye.
The disposal policies differ from country to country. Please contact your local authorities for further
information. They are also obliged to provide information to you, who is approved for the disposal of
used etchant.
development process significantly.
Do not pour previously used developer back into fresh solution. You should therefore use only so
much developer as you need for the job, and replace the developer in the cuvette at the latest, if you
cannot see the pcb in the liquid any more.
The developer for the Bungard presensitized boards is not a photographic developer. It contains no
heavy or precious metals. Characteristic for this developer, as well as the comparable waste water
from dishwashers, is the content of lye.
The disposal policies differ from country to country. Please contact your local authorities for further
information. They are also obliged to provide information to you, who is approved for the disposal of
used etchant.
Trouble Shooting
Exposure
If you expose too short the photo resist cannot be fully developed. This can be seen in a reddish-
brown colour change of the exposed areas of the image, when it is put into the developer. These
residues can be very difficult to remove and make etching hard or impossible.
If you expose too much and your layout is not completely light proof, you will see interrupts on the
tracks or complete loss of fine lines. Nevertheless, it is better to expose rather too long than too
short.
If your layout is not completely light proof you can try to expose less and use stronger developer, e.g.
twice as concentrated as usual.
With some experience, you can even manage to get proper pcbs from photocopies on white paper.
If you make your layout with a laser printer, it is better to use tracing paper instead of polyester film.
The picture is less distorted and the toner will be more black.
A complete loss of images can occur, if the pcb was not exposed resist layer upon printed side of the
layout or insufficient contact between film and pcb.
If you expose too short the photo resist cannot be fully developed. This can be seen in a reddish-
brown colour change of the exposed areas of the image, when it is put into the developer. These
residues can be very difficult to remove and make etching hard or impossible.
If you expose too much and your layout is not completely light proof, you will see interrupts on the
tracks or complete loss of fine lines. Nevertheless, it is better to expose rather too long than too
short.
If your layout is not completely light proof you can try to expose less and use stronger developer, e.g.
twice as concentrated as usual.
With some experience, you can even manage to get proper pcbs from photocopies on white paper.
If you make your layout with a laser printer, it is better to use tracing paper instead of polyester film.
The picture is less distorted and the toner will be more black.
A complete loss of images can occur, if the pcb was not exposed resist layer upon printed side of the
layout or insufficient contact between film and pcb.
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
Tel.: +49 (0) 2292/5036, Fax: +49 (0) 2292/6175, E-mail: support@bungard.de