Bungard FR4 Photo Resist PCB - 120306Z33

This high quality double-sided epoxy printed circuit board from Bungard features copper cladding a...

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Rapid Online - Rapid Electronics Ltd.Bungard 120306Z33 FR4 Photo Resist PCB Double Sided 160mm x 100mm ...
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Product Information

Full details

The Bungard FR4 Photo Resist PCB (120306Z33) is an ideal solution for engineers, students, and hobbyists looking to create professional-grade, double-sided printed circuit boards for prototypes or limited production runs. This board offers high mechanical stability and precision through its photo-resist coating, though users should note that the light-sensitive nature of the material requires careful storage and handling away from UV exposure to prevent premature exposure.

All features

Model Part Number120306Z33
BrandBungard

Extended Product Information

FAQs

What are the dimensions of this board?

This board measures 160mm x 100mm with a thickness of 1.5mm.

Does this board have through-hole plating?

No, this is a standard copper-clad laminate without pre-plated through-holes.

What is the thickness of the copper cladding?

The copper cladding thickness is 35µm.

Do I need to remove the blue film before using?

Yes, peel back the protective blue light-shielding film only immediately before you are ready to expose the board to UV light.

Is this material compatible with CNC milling?

Yes, the FR4 material is standard for CNC milling, though the board comes pre-coated with photo resist intended for chemical etching.

Troubleshooting

Photo resist does not wash off after exposure

Check your UV light intensity or increase the exposure time, as the resist may be under-exposed.

Circuit traces appear washed out or incomplete

Ensure the transparency mask is in perfect contact with the board during exposure to prevent light bleeding.

Copper etching is uneven

Ensure the etching solution is agitated sufficiently during the process to maintain consistent chemical contact.

Pros and Cons

Pros

  • Meets international IPC 4101 A standards
  • High-quality, dust-free coating for clean etching
  • Professional grade FR4 material
  • Convenient 160mm x 100mm Eurocard sizing

Cons

  • Light-sensitive coating requires darkroom storage
  • Requires chemical etching process
  • Positive resist technique has a learning curve

Setup, Compatibility & Care

To ensure optimal results, follow these handling protocols:

  1. Storage: Always keep the boards stored in the provided light-tight packaging. Exposure to ambient light will degrade the photo resist over time.
  2. Preparation: Clean the working environment to prevent dust from settling on the board surface before exposure.
  3. Exposure: Place your circuit mask tightly against the resist-coated side and expose it to a UV light source according to your specific lamp's specifications.
  4. Development: Immerse the board in an appropriate developer solution until the circuit pattern is clearly visible.
  5. Etching: Use an etching agent like ferric chloride or sodium persulfate to remove the unwanted copper, then rinse thoroughly with water.

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