Keszoox
5×7cm Universal Prototype PCB Board — Single-Sided, 2.54mm Pitch, Yellow FR4 (5-Pack)
5×7cm Universal Prototype PCB Board Single-Sided, 2.54mm Pitch, Yellow FR4 (5-Pack)
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5×7cm Universal Prototype PCB Board — Single-Sided, 2.54mm Pitch, Yellow FR4 (5-Pack)
This 5×7cm single-sided universal prototype PCB (perfboard) features a 2.54mm (0.1") hole pitch grid with tin-plated copper pads, providing a reliable soldering surface for through-hole components. The yellow FR4 fiberglass substrate offers good mechanical strength and heat resistance. Ideal for building permanent prototype circuits, Arduino shields, sensor breakout boards, and custom electronics projects without custom PCB fabrication.
Key Specifications
| Parameter | Value |
|---|---|
| Board Size | 5 × 7cm (50 × 70mm) |
| Hole Pitch | 2.54mm (0.1") — standard DIP/breadboard pitch |
| Hole Diameter | 1.0mm |
| Copper Layer | Single-sided (bottom copper pads) |
| Substrate Material | FR4 fiberglass |
| Board Thickness | 1.6mm |
| Copper Finish | Tin-plated (HASL) |
| Color | Yellow |
| Quantity | 5 pieces |
Single-Sided vs Double-Sided Prototype PCB
| Feature | Single-Sided (this listing) | Double-Sided |
|---|---|---|
| Copper layers | 1 (bottom only) | 2 (top + bottom) |
| Routing flexibility | Lower — jumper wires needed for crossings | Higher — top/bottom traces for complex routing |
| Best for | Simple circuits, learning, single-layer layouts | Complex circuits, Arduino shields, multi-signal boards |
| Cost | Lower | Higher |
Why Choose This Prototype PCB?
- 2.54mm standard pitch — fits all DIP ICs, Arduino headers, and standard through-hole components
- FR4 substrate — more durable and heat-resistant than paper phenolic (brown) perfboard
- Tin-plated pads — excellent solderability, no oxidation issues
- 5×7cm size — large enough for most small circuit builds, fits standard project enclosures
- 5-pack value — sufficient for multiple prototype iterations
Compatible With / Common Use Cases
- Arduino sensor shield: Solder DHT11, LDR, and LED circuits onto perfboard for permanent Arduino add-on
- NE555 timer circuit: Build astable or monostable 555 timer circuits on perfboard
- Op-amp amplifier: LM358 or TL072 audio amplifier circuit on perfboard
- Power supply circuit: 7805 or LM317 linear regulator circuit with filter capacitors
- Relay driver board: ULN2003 + relay circuit for Arduino output expansion
Frequently Asked Questions
Q: What is the difference between FR4 and paper phenolic (brown) perfboard?
A: FR4 (fiberglass) is stronger, more heat-resistant, and has better electrical insulation than paper phenolic. FR4 does not absorb moisture and withstands repeated soldering without delaminating. Paper phenolic is cheaper but brittle and can char when soldering. Always choose FR4 for reliable prototype builds.
Q: How many DIP-8 IC positions fit on a 5×7cm board?
A: A 5×7cm board has approximately 19×27 = 513 holes at 2.54mm pitch. A DIP-8 IC occupies 4×2 = 8 holes plus clearance, so approximately 6–8 DIP-8 ICs can fit depending on routing and component spacing.
Q: Can I use this board with SMD components?
A: This board is designed for through-hole components (2.54mm pitch). For SMD components, use an SMD adapter breakout board or a dedicated SMD prototype PCB with finer pitch pads. You can solder SMD components to the copper pads with care, but the pad size is not optimized for SMD.
Package Contents
- 5× 5×7cm Universal Prototype PCB Board (single-sided, yellow FR4)
