MB102 Breadboard Power Supply Module (3.3V/5V Dual Channel)

When prototyping custom circuits, juggling external battery packs, bare wires, and bulky bench supplies can quickly turn your workspace into a mess of tangled connections. The MB102 Breadboard Power Supply Module neatly solves this problem by plugging directly into the power rails of any standard 400-point or 830-point breadboard. By connecting a standard 6.5-Volt to 12-Volt DC wall adapter to the built-in barrel jack, this tiny module instantly steps the higher voltage down to perfectly stable logic levels, distributing power exactly where you need it without wasting any of your valuable prototyping space.

What makes the MB102 incredibly versatile is its independent dual-channel design. Using the small onboard jumper caps, you can independently set the top and bottom power rails of your breadboard to receive either 5 Volts, 3.3 Volts, or 0 Volts (Off). This means you can easily power a standard 5-Volt microcontroller on one side of your board while safely running a delicate 3.3-Volt Wi-Fi module on the other. Featuring an integrated push-button power switch and a dedicated power indicator LED, it is the absolute standard prototyping companion for beginners and seasoned engineers alike.

Key Features & Functional Advantages

• Direct Breadboard Integration: Specially designed with downward-facing header pins that snap perfectly into the positive and negative power rails of standard MB102-style breadboards.

• Dual Independent Channels: Allows you to select 5 Volts on one rail and 3.3 Volts on the other simultaneously, which is perfect for modern mixed-voltage electronic projects.

• Push-Button Power Switch: Features a built-in latching ON/OFF switch, saving you the constant hassle of unplugging your main power adapter to turn off your circuit.

• Multiple Power Inputs: Readily accepts 6.5 Volts to 12 Volts through a standard 5.5x2.1mm DC barrel jack, or it can be powered directly via the onboard USB Type-A port.

• Extra Output Headers: Includes dedicated upward-facing header pins that provide 3.3 Volts, 5 Volts, and Ground, allowing you to easily power external sensors or displays that are not mounted on the breadboard itself.

Perfect For

• Microcontroller Prototyping: Providing reliable, separated power rails for building custom logic circuits from scratch.

• Educational Labs: The absolute standard tool for students learning circuit design, eliminating the need for expensive benchtop power supplies at every desk.

• Mixed-Logic Circuits: Safely interfacing older 5-Volt logic chips with modern 3.3-Volt sensors without risking overvoltage damage.

• Quick Bench Testing: Effortlessly testing individual LEDs, small motors, and integrated circuits before soldering them onto a permanent printed circuit board.

Technical Specifications

• Compatible Breadboards: Standard 830-point and 400-point (MB102 spacing)

• Input Voltage (DC Jack): 6.5 Volts to 12.0 Volts DC

• Input Voltage (USB): 5.0 Volts DC

• Selectable Output Voltages: 3.3 Volts and 5.0 Volts DC (Configurable independently per rail)

• Maximum Output Current: ~700 milliamps total

• Onboard Regulators: Dual AMS1117 linear voltage regulators

• Dimensions: 5.3 cm x 3.5 cm

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Please note, a delivery fee of €4.99 applies for orders under €50. For those in remote areas, be aware that our couriers may apply an extra surcharge. This additional fee helps cover the costs of transporting your items to harder-to-reach locations.