Home made PCB:ferric chloride concentration - Electronic Circuits Projects Diagrams Free

darvaish · 14th March 2005, 05:32 AM

I want to use ferric chloriode as an etchent for a home made PCB
Can some one plz tell me what should be the concentration of the solution
i mean weight of ferric chloride in grams and the volume of water in liters

I have ferric chloride in powder form

Phasor · 14th March 2005, 08:37 AM

I find that the concentration is not absolutely critical - If it does not come with instructions, then I would say roughly 3 or 4 heaped tablespoons per litre. If you find it does not etch fast enough (assuming you have warmed the water), then add a bit more.

chemelec · 14th March 2005, 03:08 PM

It is also a Good Idea to add a Few Drops of Muriatic Acid (Hydrochloric Acid) to each ounce of the Ferric Chloride Solution.

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14th March 2005, 05:32 AM	#1
darvaish	Home made PCB:ferric chloride concentration I want to use ferric chloriode as an etchent for a home made PCB Can some one plz tell me what should be the concentration of the solution i mean weight of ferric chloride in grams and the volume of water in liters I have ferric chloride in powder form

14th March 2005, 08:37 AM	#2
Phasor	I find that the concentration is not absolutely critical - If it does not come with instructions, then I would say roughly 3 or 4 heaped tablespoons per litre. If you find it does not etch fast enough (assuming you have warmed the water), then add a bit more.

14th March 2005, 03:08 PM	#3
chemelec	It is also a Good Idea to add a Few Drops of Muriatic Acid (Hydrochloric Acid) to each ounce of the Ferric Chloride Solution. __________________ I No Longer accept Private Messages on here. All Emails to me Must Contain the Word \"Electronic\" in the \"Subject Line\" or they go Directly to my Junk Mail Folder. Email me at: chemelec@hotmail.com Website: http://www3.telus.net/chemelec