Fast Etchant Sodium Persulfate for PCB 600g
Brand: satkit
VAT included (Ex VAT: 8.00 €)
Fast Etchant Sodium Persulfate for PCB 600gr
This product is a fast etchant specially formulated for etching printed circuit boards (PCB) at home or in electronics workshops. Sodium persulfate is a solid that, when dissolved in water, creates a clear solution that allows copper to be etched quickly and efficiently in approximately 10 minutes.
Key features
- Single component: solid sodium persulfate.
- Effective copper etching with an approximate ratio of 1 part powder to 3 parts water.
- Fast etching speed, around 10 minutes per board.
- The solution can be reused several times until its effect is exhausted.
- Low level of liquid waste and relatively mild odour.
- Ideal for home-made printed circuit board production.
Instructions for use
- Dissolve the powder in water until saturated (example: 60 g of powder in 200 g of water) until a clear solution is obtained.
- Immerse the circuit board in the solution. The colour of the solution will gradually change to green, indicating that etching is in progress.
- In approximately 10 minutes, the copper will be etched away and the board will be clean.
- When etching is complete, the emerald colour of the solution will be clear and bright.
- For subsequent etches, add a little water and powder to restore saturation and continue the process.
Precautions and recommendations
- Corrosive product, the use of latex gloves is recommended when handling it.
- If the solution shows sludge or green sediment, this is a sign that it is damaged and should be replaced.
- If the solution does not turn emerald, it may be due to too few etches or too much damaged solution; in this case, repeat the process or prepare a new solution.
- Avoid contact with the aluminium base plate, as it should not be etched.
- Gently shake the tray during etching to help dissolution and the process.
- When finished, wash the board with plenty of water to remove residue.
Typical uses
This etchant is perfect for hobbyists, makers and technicians who carry out printed circuit board etching in workshops or at home. It allows fast, clean etching for electronics projects, prototypes and repairs.
Compatibility
Compatible with printed circuit boards containing copper. Not recommended for boards with an aluminium base or materials sensitive to the chemical corrosion of persulfate.
- Fast etchant for PCB etching with sodium persulfate.
- Easy-to-prepare solution with powder and water in a 1:3 ratio.
- Copper etching in approximately 10 minutes.
- Reusable solution until its effect is exhausted.
- Low level of liquid waste and mild odour.
- Ideal for home use and electronics workshops.
Customer Questions & Answers
What is the recommended exact ratio of sodium persulphate and water to prepare the etching solution?
The optimum ratio is 1 part sodium persulphate to 3 parts water (by mass). For example, for 200 g of water, add approximately 60 g of sodium persulphate. Dissolve until saturated; if no more powder dissolves, stop adding it.
Is this etchant compatible with all types of PCBs, and what are its limitations in terms of board thickness or size?
Sodium persulphate is suitable for etching copper on standard PCBs (FR4 or phenolic) with typical copper thicknesses between 18 and 35 µm. For thicker boards (>70 µm copper), the process will be slower and may require renewing the solution. It is not suitable for PCBs with special etch-resistant coatings.
What comparative advantages does sodium persulphate offer over ferric chloride in this type of application?
Compared with ferric chloride, sodium persulphate produces a cleaner solution, is less staining and is easier to clean from tools and surfaces. In addition, its initial solution is transparent, making it easier to monitor the etching process. However, its etching speed may be slightly lower, especially at low temperatures.
How do you use sodium persulfate for PCB etching?
Dissolve the powder in water until saturated (approximately 1 part powder to 3 parts water), immerse the circuit board and wait for the etching to complete in about 10 minutes.
Is the sodium persulfate solution reusable?
Yes, the solution can be reused several times until it loses its etching effect.
What precautions should I take when using this product?
It is corrosive, so latex gloves are recommended and contact with skin and eyes should be avoided. Also avoid letting the solution touch aluminium boards.
What should I do if the solution does not turn emerald during etching?
It may be due to too few etches or damaged solution. It is recommended to try a few more etches or prepare a new solution if sludge or sediment appears.
How long does etching with sodium persulfate take?
Etching is usually completed in approximately 10 minutes.