400 Tie-Points Mini Breadboard High Quality Solderless Experiment Board Circuit Board

400 Tie-Points Mini Breadboard Product Overview

This 400 tie-points mini breadboard is a compact solderless experiment board for rapid electronic circuit prototyping and testing. Featuring standard 2.54mm pitch holes, it provides 400 reliable connection points, including two power rails (50 holes each) and 300 independent tie points. Components such as resistors, capacitors, ICs, and wires can be inserted without soldering, allowing quick circuit building and modification. The board comes with self-adhesive tape or mounting holes on the back. Available with or without a protective case. Ideal for student labs, maker DIY projects, and microcontroller peripheral circuit verification.

400 Tie-Points Mini Breadboard Core Features

Compact 400 Tie-Point Layout： 300 independent tie points + 100 power rail tie points (50 per side, red/blue marked), suitable for small to medium circuits

Solderless Contact Structure： High-quality phosphor bronze nickel-plated spring clips provide reliable contact for over 5000 insertions

Standard 2.54mm Pitch： Compatible with most electronic components, Dupont wires, and pin headers – works seamlessly with Arduino, Raspberry Pi, etc.

Red/Blue Power Rails： One red (+) and one blue (-) rail on each side for easy power and ground distribution

Mountable Base： Self-adhesive backing or pre-drilled mounting holes for secure attachment to workbenches or enclosures

Interlocking Design： Side grooves/tabs allow multiple breadboards to be joined (depending on model)

Color Identification： Red/blue lines clearly mark power rails; center color coding indicates connection patterns

Two Packaging Options： Available with protective case (dustproof, easy storage) or without case (simple anti-static bag)

400 Tie-Points Mini Breadboard Applications

Electronic Circuit Prototyping： Amplifiers, filters, oscillators – quick validation

Microcontroller Experiments： Peripheral circuit building for Arduino, STM32, ESP32

Sensor Testing & Debugging： Connect sensor modules for functional verification

Teaching & Competitions： Quick circuit demonstration with easy modification

Maker DIY Projects： Wearables, smart home gadgets, etc.

Component Testing： Test components, build temporary test circuits

400 Tie-Points Mini Breadboard Key Advantages

Compact and Portable, Saves Desk Space： ~85×55 – half the size of a full‑size breadboard, perfect for benchtop experiments and portable projects

Solderless Rapid Prototyping： Build and modify circuits without soldering – plug components in and out instantly

High Reliability Contacts： Phosphor bronze spring clips provide firm electrical connection, low contact resistance, thousands of insertions

Clearly Marked Power Rails： Red/blue lines simplify power and ground connections, reducing jumper clutter

Standard Pitch for Wide Compatibility： 2.54mm spacing works with DIP ICs, resistors, capacitors, LEDs, sensor modules, and most standard components

Expandable via Interlocking： Join multiple boards together for larger, more complex circuits

Multiple Mounting Options： Self-adhesive backing or mounting holes allow attachment to experimental plates or enclosures

Cost‑Effective, Ideal for Bulk Purchase： Low cost, reusable – a budget‑friendly tool for labs, schools, and hobbyists

Why Choose QIXINWEI

Years of experience in the electronics industry. Trusted by global customers.

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FAQ:

1. What is a 400 tie-point mini breadboard and what is it used for?
   A 400‑point mini breadboard is a small, solderless prototyping board that allows you to build and test electronic circuits quickly without soldering. It consists of a grid of spring‑loaded contact clips arranged in rows and columns. You simply insert component leads and jumper wires into the holes to create temporary electrical connections. It is widely used by students, hobbyists, and engineers for prototyping microcontroller circuits, sensor modules, LED experiments, and other low‑power electronic projects.

2. How are the internal connections arranged inside a 400‑point breadboard?
   A typical 400‑point breadboard has a central groove that separates two main component areas. Each column on either side of the groove consists of 5 vertically connected tie‑points (holes). Along the top and bottom edges, two long rows marked with red (+) and blue or black (−) lines are the power rails: each row is internally connected along its entire length. This arrangement allows you to place a DIP IC across the groove, connect power to the rails, and wire components without short circuits.

3. What is the typical size and weight of a 400‑point mini breadboard?
   Standard external dimensions are approximately 82 mm × 54 mm × 10 mm (3.2 in × 2.1 in × 0.4 in). Weight is usually around 35‑50 grams. The compact size makes it easy to fit several boards side by side or to attach them to a larger mounting plate. The underside often has a peel‑off adhesive backing for securing the board to a project base.

4. What wire sizes and component lead diameters does the breadboard accept?
   The spring contacts are designed for wire diameters of 0.3‑0.8 mm (AWG 28‑20). Standard single‑strand jumper wires (AWG 22‑24), resistor leads, capacitor leads, and IC pins fit perfectly. Using wire that is too thick can permanently deform the spring clips, causing poor connections. Always use solid‑core wire; stranded wire tends to splay and short to adjacent contacts unless you solder the tips.

5. What are the voltage and current limits for a breadboard circuit?
   These breadboards are designed for low‑voltage, low‑current electronics. A practical limit is about 30 V DC and 500 mA per contact, although most hobbyists stay well below these values. The metal spring clips have a small contact resistance (typically a few milliohms) that can cause heating at currents above 1 A. For high‑current or mains‑voltage circuits, a breadboard is not suitable and can be a fire risk.

6. Can I use this breadboard for high‑frequency or RF circuits?
   Not recommended. At frequencies above a few MHz, the stray capacitance between adjacent rows (typically 2‑5 pF) and the long, unshielded wiring cause signal degradation, crosstalk, and oscillations. Breadboards are best suited for DC and low‑speed digital circuits. For RF prototyping, use a copper‑clad board with proper grounding (dead‑bug or Manhattan style).

7. How can I power my circuit on a mini breadboard? Can I connect a battery or power supply directly?
   Yes. The most convenient way is to use a dedicated breadboard power supply module that plugs directly into the power rails and provides 3.3 V and/or 5 V from a USB or DC input. Alternatively, you can connect an external battery or bench power supply to the power‑rail strips using jumper wires. Always ensure the correct polarity—connecting power backwards can damage your components.

8. How do I keep my breadboard circuit neat and reliable for long‑term use?
   Use pre‑cut, color‑coded solid‑core wires of the shortest practical length. Route wires flat against the board and avoid crossing over components. Use red wires for power, black for ground, and other colors for signals. Press components and wires fully into the board to ensure good contact. For semi‑permanent prototypes, you can screw the breadboard onto a plywood base and add cable ties for strain relief.

9. My breadboard connections feel loose, and some circuits behave intermittently. How can I fix this?
   Over time, the spring clips can lose tension if thick leads or wires have been inserted, or if the board has been exposed to excessive heat. Unfortunately, individual clips cannot be repaired. Try inserting components and wires only into the unused areas of the board. To extend the life of your breadboard, never force oversized pins, avoid flexing the board while components are inserted, and keep the board clean and free of flux residue.

10. What are the most common uses for a 400‑point mini breadboard?
    It is used for building and testing Arduino and Raspberry Pi circuits, learning basic electronics, prototyping sensor and motor‑driver modules, creating small LED displays, and evaluating new ICs. Its small size makes it perfect for a single‑chip project or a dedicated test jig where a full‑size breadboard would be too large and messy.