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Three gold-plated quarter-size proto PCBs with white silkscreen and thru-plated holes

Adafruit

Adafruit Perma-Proto Quarter Breadboard PCB Pack of 3

SKU CH-ERJ7-SQB0Q

Pack of three quarter-sized proto boards with gold-plated, thru-plated 1.2 mm holes and no solder mask for easy trace cutting

  • TypeEngineering Development Tools
  • Pack of 3 boards keeps spares ready
  • Gold-plated pads resist oxidation for reliable joints
  • Thru-plated holes add mechanical strength for heavy leads
  • 2 mm drill size accepts large component leads
  • No solder mask allows easy trace cutting for modifications

Quarter-Sized Proto Board Pack

This pack contains three quarter-sized Perma-Proto PCBs that replicate the layout of a small solderless breadboard including power rails. The white silkscreen on top mirrors familiar breadboard markings to simplify transferring a prototype. Gold-plated, through-plated holes resist oxidation and provide mechanical strength for repeated soldering.

For Permanent Prototypes Not High-Density Layouts

These boards suit makers and engineers who want a durable, breadboard-mapped platform for one-off circuits or small-batch builds. The solder-mask-free design allows traces to be cut easily for modifications. Builders needing surface-mount footprints, tighter pitch or pre-routed buses should look elsewhere.

1.2 mm Through-Plated Hole Diameter

Every hole is drilled to 1.2 mm and plated through the board, accepting larger component leads while preventing pad lift during rework. The gold finish eliminates the oxidation common on bare copper perfboard. This hole size is the key specification that determines which parts will fit.

Highlights

  • Pack of 3 boards keeps spares ready
  • Gold-plated pads resist oxidation for reliable joints
  • Thru-plated holes add mechanical strength for heavy leads
  • 2 mm drill size accepts large component leads
  • No solder mask allows easy trace cutting for modifications

Specifications

TypeEngineering Development Tools

Questions about this item

How often will I need to replace the thru-plated holes?

The holes are thru-plated for mechanical strength and will not require replacement under normal use.

What limits how many traces I can cut on the board?

You can cut traces wherever the solder mask is absent, so the practical limit is the physical space between adjacent pads.

Does the board generate heat or noise during continuous operation?

It is a passive PCB with no active components, so it produces no heat or noise of its own.

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