SHILLEHTEK Universal Power Supply Module
4.6Editor score
Affordable single unit price
3.3V and 5V output
Plug into breadboard rails
In this guide
Finding the right 12V breadboard power supply is crucial for electronics hobbyists and engineers. A good module ensures stable voltage delivery to your components without risking damage from surges or shorts during development.
We compared ten highly rated products based on input flexibility, output regulation, and ease of use. Each entry was reviewed for compatibility with standard breadboards and reliability under typical prototyping load conditions.
Every pick highlights specific strengths like dual-channel control or USB input options. Keep in mind that prices fluctuate frequently so verify current deals before making your final purchase decision online.
Top 3 Picks for Best 12V Breadboard Power Supply
2-Pack Breadboard Power Supply Module
4.5Editor score
Dual Type-C and DC input
Independent channel voltage switches
Short-circuit protection included
LM2596 Multi Channel Switching Power Supply
4.8Editor score
Adjustable voltage up to 40V
Multiple fixed output rails
High efficiency switching design
Top 10 Best 12V Breadboard Power Supply in 2026 Compared
The table below summarizes key specifications for each product. Use it to quickly identify which module matches your required voltage levels and input methods.
ProductsSpecificationsEditor scorePrice
Editor's Choice
2-Pack Breadboard Power Supply
Input: 6-12V or USB-C
Output: 3.3V and 5V
Current: 2A per channel max
Protection: Short and over-current
4.5Editor score
Editor's Choice
WWZMDiB Power Supply Module
Input: 6.5-12V or USB
Output: 3.3V or 5V
Current: under 700mA
Includes: 5 Pcs 9V connectors
4.2Editor score
Best Premium
HJ Garden Component Power Kit
Input: 6.5-12V or USB
Output: 3.3V or 5V
Current: 700mA max
Includes: Breadboard and adaptors
4.0Editor score
HiLetgo Power Supply Module
Input: 6.5-9V or USB
Output: 3.3V or 5V
Current: under 700mA
Pack: 5 pieces included
4.3Editor score
SHILLEHTEK Universal Module
Input: 6.5-12V or USB
Output: 3.3V or 5V
Current: Standard regulator limits
Compatible: MB102 boards
4.6Editor score
5 Pack Breadboard Power Module
Input: 6.5-12V or USB
Output: 3.3V or 5V
Current: under 700mA
Includes: 5 Pcs 9V connectors
4.5Editor score
DIY Breadboard Power Supply Kit
Input: Soldering kit required
Output: 3.3V 5V 12V
Current: Adjustable via potentiometer
Feature: Built-in voltage display
4.1Editor score
SunFounder BreadVolt Power Supply
Input: USB or DC jack
Output: 3.3V and 5V
Current: 1.5A and 1A
Includes: USB output port
4.5Editor score
LM2596 Switching Power Supply
Input: 5V to 40V DC
Output: 3.3V 5V 12V ADJ
Type: Multi channel switching
Voltage: Adjustable range support
4.8Editor score
Wefomey Universal Power Adapter
Input: AC 100-240V
Output: 3V to 24V
Current: Up to 3A max
Tip: Multiple DC adapters included
4.5Editor score
1. 2-Pack Breadboard Power Supply Module – Best Overall Control
2-Pack Breadboard Power Supply Module
Dual input methods supported
Independent side controls
2A output capability
LED status indicators
This module stands out for its dual input flexibility and independent channel control. It offers a reliable 2A output which exceeds standard regulator limits found in cheaper units. The inclusion of two units in a pack adds significant value for multi-station workspaces.
Pros
- Type-C and DC input options
- Two modules per pack value
- Independent voltage toggle switches
- Sits flush on breadboard
- Over-current protection included
Cons
- Requires specific DC adapter if not using USB-C
- LED brightness might be high in dark
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The ability to power one side at 3.3V and the other at 5V simultaneously is a major advantage for complex projects. The concave design ensures it does not interfere with component insertion. Built-in protection mechanisms guard your microcontrollers against accidental wiring mistakes.
While highly versatile, users should note that the LED indicators can be bright if working in a dim environment. The module requires a stable input source to maintain output regulation. However, these are minor trade-offs for the performance gains provided.
Anyone looking for a robust solution for Arduino or ESP32 projects will find this ideal. It handles higher current loads better than many competitors in this price range. We recommend it for makers who need reliable power distribution across multiple rails.
Independent Rail Control
Each side has its own switch allowing simultaneous different voltages without complex wiring.
Modern Input Options
Support for USB-C makes it easy to use modern chargers without old barrel jacks.
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2. WWZMDiB Power Supply Module – Value Pack Choice
WWZMDiB Power Supply Module
Input 6.5-12V or USB
Output 3.3V or 5V
Current under 700mA
Includes 5 V connectors
This pack offers five modules at a budget-friendly price point making it great for classrooms or bulk projects. It supports standard breadboards and includes useful 9V connectors for battery operation. The design is straightforward with no complicated setup requirements.
Pros
- Five units for a low price
- Comes with battery connectors
- Simple plug-and-play design
- Compatible with 400 and 830 point boards
Cons
- Current limited to 700mA
- Less advanced protection features
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Each module provides fixed 3.3V or 5V output suitable for basic logic circuits. The low current limit is sufficient for small sensors and LEDs but not for high-drain motors. The included connectors add convenience for portable testing setups.
The main limitation is the current capacity which may restrict usage with power hungry boards. Additionally protection features are basic compared to premium models. Still it serves well for simple educational or prototype tasks.
This is a smart buy for those needing spares or multiple stations on a tight budget. It delivers reliable power for small electronics without breaking the bank. We suggest upgrading if you plan to drive significant loads.
Battery Compatibility
Includes 9V connectors so you can easily power projects with batteries.
Bulk Quantity
Getting five modules means you can outfit entire workspaces for minimal cost.
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3. HJ Garden Component Power Kit – Complete Starter Set
HJ Garden Component Power Kit
Includes power and breadboard
Input DC 6.5-12V
Output 3.3V or 5V
Includes jumper wires
This kit is perfect for beginners who need a full set without sourcing parts separately. It includes a breadboard power module jumper wires and a dedicated 12V adapter. The setup is ready to use right out of the box for immediate testing.
Pros
- All-in-one starter kit
- Includes power adapter
- Includes jumper cables
- Compatible with popular boards
Cons
- Kit quality varies slightly
- Power module standard limits
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The power module provides stable voltage for standard microcontrollers like Arduino and ESP32. The included breadboard is a standard 830-point type suitable for medium projects. The jumpers allow quick connections between components and power rails.
The power supply is limited to 700mA which is enough for logic but not heavy loads. Some users report minor inconsistencies in the breadboard clips though. Overall it provides convenience and reliability for entry-level electronics.
We recommend this for students or hobbyists starting their first project. It removes the hassle of checking compatibility between different parts. It is an efficient way to get started with prototyping.
Ready to Use
Everything needed for a basic project is included in one package.
Microcontroller Support
Designed specifically for common boards like Arduino UNO and STM32.
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4. HiLetgo Power Supply Module – Reliable Brand Option
HiLetgo Power Supply Module
Input DC or USB
Output 3.3V or 5V
Current under 700mA
Pack of five pieces
HiLetgo is a known name in electronics components offering consistent quality. This five pack provides ample spares for ongoing work. The design is simple and focuses on delivering stable 3.3V or 5V power.
Pros
- Trusted brand reputation
- Five pack available
- Simple voltage selection
- Fits standard breadboards
Cons
- Older design features
- Limited current output
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It accepts power from USB or a DC adapter giving flexibility in power sources. The pins align perfectly with MB102 style breadboards. It is a straightforward solution for basic voltage regulation.
The unit does not offer high current output so it is best for small circuits. Protection features are minimal compared to newer models. However it remains a solid choice for basic needs.
This is a good pick if you prefer established component brands. It offers reliable performance for low-power sensors and controllers. We suggest it for general maintenance and prototyping.
Established Brand
HiLetgo is widely recognized for consistent quality in hobbyist electronics.
Simple Design
Focuses on core functionality without extra features to complicate use.
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5. SHILLEHTEK Universal Power Supply Module – Most Affordable Unit
SHILLEHTEK Universal Power Supply Module
High rated user feedback
Lowest single unit price
3.3V and 5V output
Standard breadboard fit
This single module offers the lowest price among top rated options making it ideal for tight budgets. It maintains high user satisfaction with reliable performance. The design supports standard input methods and outputs.
Pros
- Excellent value per unit
- High customer rating
- Universal compatibility
- Compact design
Cons
- Single unit only
- No extra accessories
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It fits MB102 breadboards without requiring soldering or custom wiring. The unit provides stable voltage for common components like sensors and LEDs. It is a no-frills option that gets the job done effectively.
Since it is a single unit you may need to buy more for multiple projects. It lacks the extra connectors found in kit versions. Despite this it delivers consistent power for daily use.
We recommend this for anyone needing a spare module quickly without spending much. It is a great value for the money. It serves well for quick prototyping sessions.
Low Cost
Priced competitively to make prototyping accessible to more users.
High Ratings
Users consistently rate it highly for reliability and ease of use.
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6. 5 Pack Breadboard Power Module – Battery Ready Option
5 Pack Breadboard Power Module
Input DC or USB
Output 3.3V or 5V
Current under 700mA
Includes battery connectors
This set provides five modules and battery connectors ideal for portable projects. It simplifies power management by allowing quick battery installation. The design is user-friendly with clear status indicators.
Pros
- Five modules included
- Includes 9V battery clips
- Easy plug and play
- LED status indicator
Cons
- Basic current limits
- Fixed voltage output
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Each unit supports standard voltage outputs for most electronics. The battery clips enable field use without wall outlets. It is a practical choice for demonstrations or outdoor experiments.
The power is limited to basic ranges so it is not for high loads. Some users prefer adjustable units for broader testing. However it covers most hobbyist needs well.
We suggest this for teachers or students needing portable power solutions. It removes the need for additional wires or adapters. It works well for educational prototyping.
Portable Power
Battery connectors allow you to move projects anywhere easily.
Status Indicator
LED lights confirm when power is active for safety.
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7. DIY Breadboard Power Supply Kit – Advanced User Kit
DIY Breadboard Power Supply Kit
Includes soldering components
Fixed and adjustable outputs
Built-in voltage display
LM2596 core design
This kit lets you assemble your own power supply for maximum customization. It features an adjustable output option alongside fixed rails. The display provides real-time voltage feedback during use.
Pros
- Build your own module
- Includes digital display
- 12V output available
- High power potential
Cons
- Requires soldering skills
- More assembly time
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It is ideal for experienced makers who want to learn about power circuits. The LM2596 chip allows higher efficiency and current handling. You can dial in exact voltages for sensitive components.
Soldering is required which may be a barrier for beginners. The assembly takes time but results in a robust solution. It offers more flexibility than plug-in modules.
We recommend this for those wanting a permanent lab setup. It teaches valuable skills while delivering professional performance. It is excellent for labs and advanced projects.
Custom Build
Assembling the kit gives deeper insight into how power supplies work.
Adjustable Voltage
You can fine-tune output levels to match specific project needs.
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8. SunFounder BreadVolt Power Supply – High Current Option
SunFounder BreadVolt Power Supply
5V output 1.5A
3.3V output 1A
Includes USB port
Compact dimensions
This module delivers higher current than standard regulators supporting heavier loads. The dedicated USB port adds utility for powering external devices directly. It is designed to handle modern boards like Raspberry Pi Pico.
Pros
- Higher current than standard
- Dedicated USB output port
- Stable regulator design
- Compact and portable
Cons
- Price slightly higher
- No adjustable output
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It provides 1.5A at 5V which is rare for these form factors. The compact size saves space on dense breadboards. It includes a reliable switch for easy control.
It does not offer adjustable voltage which limits some advanced uses. The price is reasonable considering the performance specs. It is a great balance of power and size.
We suggest this for projects requiring more power than LEDs or small chips. It supports robotics and motor control well. It is a smart choice for demanding applications.
High Amperage
Supports 1.5A at 5V for motors or displays.
USB Output
Dedicated USB port allows powering other USB devices easily.
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9. LM2596 Switching Power Supply – Premium Flexible Output
LM2596 Switching Power Supply
Input 5V to 40V
Multiple voltage outputs
Adjustable voltage pin
Switching efficiency
This premium module offers extensive input and output flexibility for advanced users. It supports input voltages up to 40V enabling use with various sources. The design includes both fixed and adjustable rails.
Pros
- Very wide input range
- Multiple fixed output rails
- Adjustable voltage capability
- Efficient power usage
Cons
- Requires some setup knowledge
- Not always plug-and-play
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It allows you to create custom power distribution layouts with multiple channels. The switching design ensures efficiency reducing heat compared to linear regulators. It is highly rated by professionals.
It may require more wiring effort than standard breadboard modules. Some technical knowledge helps maximize its potential. Despite this it is the most versatile option.
We recommend this for labs or serious prototyping stations. It adapts to many different voltage needs without needing separate adapters. It is a top-tier choice for experts.
Wide Input
Accepts anything from 5V to 40V DC input.
Adjustable Output
You can adjust voltage levels precisely with a trimmer.
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10. Wefomey Universal Power Adapter – High Power Source
Wefomey Universal Power Adapter
Input AC 100-240V
Output 3V to 24V
Max 3A current
Multiple DC tip included
This adapter is not a direct module but a powerful universal source. It supports 72W and multiple voltage settings. The included clips allow direct connection to breadboard rails.
Pros
- Adjustable voltage up to 24V
- High 3A current capacity
- Includes many connector tips
- LCD voltage display
Cons
- Not directly plug-in breadboard
- Uses alligator clips
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It provides massive current capacity for driving large arrays of devices. It is useful for powering whole projects from a central source. The LCD shows precise voltage settings.
It is not a compact module but a heavy duty supply. It requires clips or a barrel jack to interface. For high load systems it is ideal.
We suggest this for large projects needing significant power. It avoids the need for separate supplies for different parts. It is a versatile power station.
High Wattage
72W capacity allows powering substantial loads.
Universal Tips
Includes 12+ tips for various devices.
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Buying Guide – How to Choose the Best 12V Breadboard Power Supply
Selecting the right module depends on your specific power requirements and project complexity. Consider these factors to ensure stability and safety.
Voltage Output Options
Ensure the module provides the fixed voltages your components require. Most modules offer 3.3V and 5V which suit most logic chips. Some advanced models offer adjustable rails or higher voltages like 12V.
Check if you need dual independent outputs to run mixed voltage circuits simultaneously.
Current Capacity
Standard modules often limit output to around 700mA. If you are driving motors or displays you need higher current like 1.5A or 2A.
Select a unit that exceeds your total load to prevent voltage drops.
Input Methods
Look for units supporting USB-C or modern adapters for convenience. Some older models still rely on barrel jacks which may require specific bricks.
Dual input support gives flexibility if you are in the field.
Safety Protections
Modules with over-current or short-circuit protection save your components. This is critical when testing circuits where accidental shorts can happen.
Prioritize units with protection to avoid burning out sensitive ICs.
Form Factor
The module should sit flush without blocking rows. A concave design ensures you do not lose tie-points for components.
Compact sizes allow fitting more components on small boards.
Connector Compatibility
Verify the pins match your breadboard rail spacing. Standard MB102 spacing is common but variations exist.
Some kits include jumpers or battery clips which add value.
Price and Quantity
Buying in packs reduces cost per unit significantly. Consider if you need spares for multiple workstations.
Compare value based on features and quantity included.
Regulation Type
Switching regulators are more efficient for high loads while linear regulators are simpler. Ensure the regulator type fits your heat dissipation needs.
Switching modules are better for battery life in portable setups.
How to Use and Care for Your 12V Breadboard Power Supply
Plug the module directly into the power rails of your breadboard ensuring the pins align correctly. Do not force it as misalignment can damage the socket.
Connect your power source to the input jack or USB port. Verify polarity if using barrel jacks to avoid reverse voltage damage.
Turn on the switch and check the LED indicator. Monitor your components to ensure stable operation before leaving the circuit unattended.
Frequently Asked Questions
Can I use a 12V supply to power a 5V circuit?
Yes most modules accept 12V input and regulate it down to 5V internally. This is standard practice for these units to ensure clean power.
Do I need a separate regulator if I use this module?
No these modules include built-in regulators. You only need external regulators if you need voltages not provided by the unit.
What happens if I short the output?
Modules with protection will cut off current to prevent damage. However relying on protection for frequent shorts is not recommended.
Why does the module get warm?
Regulators convert excess voltage to heat. If it is warm under load this is normal but it should not be too hot to touch.
Can I power multiple breadboards from one module?
You can parallel power rails if the module supports enough current. Ensure your total draw does not exceed the unit's capacity.
Is USB power enough for Raspberry Pi?
For small Pi models like Pico USB is often sufficient. For full Pi boards you may need a dedicated power source or higher current module.
How do I choose between fixed and adjustable?
Choose fixed if your components need specific voltages. Choose adjustable if you experiment with varying requirements often.
Are these modules safe for kids?
Yes they are designed for educational use with low voltage outputs. Supervision is recommended when handling wiring and soldering.
Final Thoughts on Choosing the Best 12V Breadboard Power Supply
We highlighted the 2-Pack Power Supply as our top choice for its balance of features and versatility. The SHILLEHTEK module offers the best budget option while the LM2596 delivers premium flexibility.
Prioritize current capacity and safety features when selecting a module for your lab. These aspects ensure your projects remain safe and functional over time.
Prices and availability change regularly so check the current deals before buying. A small difference in price can mean better value with the right unit.