12V (8-23V) to 3.3V 3A 10W Waterproof DC-DC Buck Converter Module - IP68 Sealed

Product Description

This miniature waterproof DC-DC step-down (buck) converter power supply module delivers reliable 3.3V power from 8V to 23V (nominally 12V) DC input sources. Featuring IP68-rated epoxy-sealed housing and flying lead connections, this compact converter is ideal for automotive, marine, outdoor electronics, and any application requiring weatherproof power conversion.

Key Features

• IP68 Waterproof Protection: Fully epoxy-sealed plastic housing protects against complete dust ingress and continuous water immersion
• Wide Input Voltage Range: Operates on any DC voltage from 8V to 23V (optimized for 12V systems)
• Stable 3.3V Output: Regulated output with ±1% voltage regulation
• High Current Capacity: Delivers up to 3A continuous current (10W maximum power)
• Comprehensive Protection: Over-current, over-heating, short-circuit, and reverse polarity protection with auto-recovery
• High Efficiency: Typically 95% conversion efficiency minimizes heat and power loss
• Ultra-Compact Design: Only 46 x 27 x 14mm (1.81" x 1.04" x 0.55") and weighs just 36g
• Flying Lead Connections: 13.5cm (5.3") pre-attached input and output wires for easy installation
• Non-Isolated Design: Lightweight and cost-effective for common ground applications
• Wide Temperature Range: Operates reliably from -40°C to +80°C

Applications

• Automotive Electronics: Power 3.3V sensors, displays, and microcontrollers from 12V car batteries
• Marine Equipment: Reliable power conversion in wet environments
• Solar Systems: Step down voltage from solar panels or batteries
• Outdoor IoT Devices: Weather-resistant power supply for remote sensors
• LED Lighting: Drive 3.3V LED strips from 12V sources
• Robotics Projects: Stable power for microcontrollers and sensors
• Industrial Control: Reliable voltage regulation in harsh conditions

Technical Specifications

Installation Guide

Wiring Instructions

Input Connections:

• Red wire: Positive (+) 8-23V DC input
• Black wire: Negative (-) ground input

Output Connections:

• Yellow wire: Positive (+) 3.3V DC output
• Black wire: Negative (-) ground output

Installation Steps

1. Verify Input Voltage: Ensure your power source provides 8-23V DC
2. Check Polarity: Confirm correct positive and negative connections (reverse polarity protection is included but proper wiring is recommended)
3. Connect Input: Attach input wires to your power source
4. Connect Output: Attach output wires to your 3.3V device or circuit
5. Secure Module: Mount using the integrated mounting tabs
6. Test: Verify 3.3V output with a multimeter before connecting sensitive equipment

Important Operating Notes

Power Supply Requirements

⚠️ Critical: Your input DC power supply must be capable of providing the maximum power drawn by your load.

Example Calculation:

• If your load draws 3A at 3.3V = 10W output power
• At 12V input with 95% efficiency, input current required ≈ 0.88A
• Your 12V supply must provide at least 0.88A continuously

Voltage Foldback Behavior: If the input supply cannot provide sufficient power, the converter will automatically reduce output voltage to match available power.

Example: If your load requires 3A at 3.3V (10W), but your 12V input supply can only provide 0.5A (6W), the converter will fold back output voltage to approximately 2V (6W ÷ 3A = 2V).

Best Practices

• Use appropriate wire gauge for current requirements (18 AWG or larger recommended)
• Ensure adequate ventilation around the module for optimal thermal performance
• Keep wire runs as short as practical to minimize voltage drop
• Add input and output capacitors for noise-sensitive applications
• Test with a multimeter before connecting expensive or sensitive equipment

Package Contents

• 1x DC-DC Waterproof Buck Converter Module (8-23V to 3.3V, 3A) with flying lead wires (13.5cm input and output)
  

Why Choose This Converter?

IP68 Waterproof Rating: Unlike standard IP67 converters that resist temporary immersion, this IP68-rated module can withstand continuous submersion, making it ideal for the most demanding wet environments.

Compact & Lightweight: At just 36 grams and smaller than a matchbox, this converter fits into tight spaces where larger modules won't work.

Comprehensive Protection: Multiple protection circuits with auto-recovery mean your system stays running even after fault conditions, reducing downtime and maintenance.

Proven Reliability: Wide operating temperature range (-40°C to +80°C) ensures consistent performance in extreme conditions from arctic cold to desert heat.

Easy Integration: Flying lead design eliminates the need for connectors or terminal blocks - just solder or crimp to your circuit.

Safety & Compliance

⚠️ Important Safety Information:

• This is a DC-only device. Never connect to AC power sources.
• Verify polarity before applying power.
• Do not exceed 3A continuous output current or 10W power rating.
• Ensure input power supply can provide required power.
• Install in location with adequate ventilation.
• Not suitable for safety-critical applications without additional safeguards.

Envistia P/N: F23J3.3V3A1S