7 × 9 cm Preboard (Prototype PCB Board)

The 7 × 9 cm Preboard (Prototype PCB Board) is a universal solderable prototyping board designed for building, testing, and developing electronic circuits without the need to manufacture a custom printed circuit board (PCB). It provides a convenient platform for assembling electronic components such as resistors, capacitors, transistors, integrated circuits (ICs), connectors, LEDs, switches, sensors, and wires into permanent or semi-permanent circuits.

Measuring 7 cm × 9 cm, this prototype board offers ample space for medium-sized electronic projects while remaining compact enough for easy integration into enclosures and experimental setups. The board features a grid of evenly spaced through-hole copper pads that accommodate standard electronic components with a 2.54 mm (0.1 inch) pin spacing, making it fully compatible with most through-hole components used in electronics.

The board is manufactured from durable fiberglass (FR4) or high-quality phenolic material, depending on the model, ensuring good mechanical strength, electrical insulation, and reliable long-term performance. Each hole is surrounded by an individual copper pad, allowing components to be soldered securely and interconnected using solder bridges or jumper wires. This design gives users complete flexibility to create custom circuit layouts without the expense of fabricating a dedicated PCB.

The 7 × 9 cm Prototype PCB Board is widely used by students, hobbyists, electronics engineers, and repair technicians for developing prototypes, testing new circuit designs, educational laboratory experiments, and assembling low-volume electronic projects. It is an excellent choice for building Arduino shields, robotics controllers, sensor interface circuits, power supply modules, amplifier circuits, communication devices, automation systems, and embedded electronics.

Unlike solderless breadboards, prototype PCB boards provide a much stronger and more permanent assembly, making them ideal for projects that require durability and long-term operation. The board can easily be modified, repaired, or expanded by adding or removing components, allowing users to refine their circuit designs efficiently.

Whether you are creating a custom electronic project, learning circuit design, or developing a prototype before manufacturing a dedicated PCB, the 7 × 9 cm Preboard offers a practical, economical, and reliable solution for a wide variety of electronic applications.

Working Principle

The prototype PCB serves as a solderable platform for constructing electronic circuits.

• Electronic components are inserted through the holes.

• Component leads are soldered to the copper pads.

• Electrical connections are created using solder bridges or jumper wires.

• The completed circuit operates like a standard printed circuit board.

• Components can be modified or replaced whenever necessary.

Key Features

• Standard board size: 7 cm × 9 cm

• Universal prototype PCB design

• Evenly spaced through-hole layout

• Standard 2.54 mm (0.1 inch) hole spacing

• Durable fiberglass (FR4) or phenolic construction

• Copper pads for secure soldering

• Easy component placement

• Suitable for permanent circuit assembly

• Lightweight and compact design

• Easy to cut and customize if required

• Compatible with standard through-hole electronic components

• Reliable mechanical strength and electrical insulation

• Easy modification and repair

Applications

The 7 × 9 cm Prototype PCB Board is widely used in:

• Arduino projects

• Raspberry Pi interface circuits

• ESP32 and ESP8266 projects

• Robotics

• Embedded systems

• DIY electronics projects

• Electronic prototyping

• Educational electronics laboratories

• Sensor interface circuits

• Power supply modules

• Amplifier circuits

• Communication circuits

• Automation systems

• Electronic repair and modifications

• Industrial control prototypes

• Hobby electronics

Specifications

• Product Type: Prototype PCB Board (Preboard)

• Board Size: 7 cm × 9 cm

• Hole Spacing: 2.54 mm (0.1 inch)

• Mounting Type: Through-hole

• Material: FR4 Fiberglass or Phenolic

• Pad Type: Individual Copper Pads

• Reusable: Yes

• Suitable For: Standard Through-hole Components