Transparent TM-400 Solderless Breadboard with 400 Tie Points for Electronic Circuits

400-Point Prototyping Board with 4 Power Rails for Arduino, ESP32, Raspberry Pi Pico and STEM Projects

The TM-400 Breadboard is a practical solution for quickly building, testing and developing electronic circuits without soldering. With 400 connection points, compact dimensions and a transparent housing, it is suitable for electronics beginners, engineers, students, educators and DIY enthusiasts working with Arduino and other development platforms.

The central working area provides 300 connection points, arranged in 30 rows and 10 columns, divided into two symmetrical groups – A to E and F to J. A central channel separates the two sections and allows direct insertion and connection of integrated circuits in standard DIP packages. This makes it easy to build electronic circuits using resistors, capacitors, diodes, transistors and other components.

For power distribution, the breadboard features two external power sections positioned at the top and bottom, providing a total of 100 additional connection points. Each section contains two independent power rails, marked with a red line (+) and a blue line (-). This simplifies the distribution of positive and negative supply voltages throughout the circuit.

One of the distinctive features of the TM-400 is its transparent ABS housing, which allows you to see the internal metal contact strips and connecting bus structures. The contacts are made of spring-loaded phosphor bronze with a nickel-plated finish, providing reliable electrical connections and allowing repeated insertion and removal of jumper wires.

The integrated side interlocking connectors allow multiple TM-400 breadboards to be mechanically connected, making it possible to expand the working area for larger projects.

The bottom surface features double-sided self-adhesive foam backing, allowing secure attachment to work surfaces, robot chassis, development platforms and electronic enclosures.

Key Features:

• 400 total connection points for solderless prototyping.

• 300 central connection points for circuit development.

• 100 connection points in the power distribution sections.

• Four independent power rails marked with + and -.

• Transparent ABS housing for visibility of the internal contact structure.

• Nickel-plated phosphor bronze spring contacts.

• Central channel for DIP integrated circuits.

• Interlocking design for connecting multiple TM-400 breadboards.

• Self-adhesive backing for convenient and secure mounting.

• Reusable design without soldering.

Suitable Applications:

• Arduino, ESP32 and Raspberry Pi Pico projects.

• Electronic circuit prototyping and testing.

• Connecting sensors, LEDs, buttons and other components.

• STEM education and electronics learning kits.

• School and university laboratory experiments.

• Experiments with integrated circuits, resistors, capacitors and transistors.

• Analogue and digital electronics development.

• Robotics and automated DIY projects.

Technical Specifications:

• Model: TM-400

• Type: Solderless Breadboard

• Total Connection Points: 400

• Central Working Area: 300 points

• Central Area Configuration: 30 rows × 10 columns

• Terminal Layout: 2 groups of 5 columns (A–E and F–J)

• Central Channel: For DIP integrated circuits

• Power Distribution Points: 100

• Power Sections: 2

• Independent Power Rails: 4

• Power Rail Markings: Red (+) and Blue (-)

• Housing Material: Transparent ABS Plastic

• Contact Material: Phosphor Bronze

• Contact Finish: Nickel Plated

• Compatible Wire Size: 20–29 AWG (specified compatibility range)

• Maximum Operating Voltage: 36V DC

• Maximum Rated Current: 2A

• Dimensions: 82 × 55 × 8.5mm

• Mounting Base: Double-Sided Adhesive Foam Tape

• Side Connectors: Yes, for connecting multiple breadboards

Note: This breadboard is designed for low-voltage electronic circuits. It is not suitable for 220V AC mains voltage, high-power loads or currents exceeding the specified 2A rating. Always check the electrical continuity of the power rails, as individual sections may be electrically separated. Actual operating limits also depend on the jumper wires and quality of the contact connections.