The Ebyte BDD03 series is an ultra-wide input (4.2-100VDC) industrial-grade DC-DC buck power module delivering up to 97% conversion efficiency, engineered with tool-free spring terminals and standard 35mm DIN-rail mounting to provide robust, surge-protected DC power regulation for IoT gateways, wireless DTUs, edge controllers, and industrial automation instrumentation.
| Specification Parameter | Technical Value / Feature Description |
|---|---|
| Product Series | Ebyte BDD03 Industrial DC-DC Buck Converter |
| Input Voltage Range | 4.2VDC to 100VDC Wide Range Input |
| Peak Conversion Efficiency | Up to 97% (MAX) |
| Mounting Standard | Standard 35mm DIN-Rail Mounting |
| Wiring Interface | Push-in Spring Terminals (Tool-Free Quick Wiring) |
| Input Protection | Lightning / Surge Protection, Input Reverse Polarity Protection |
| Output Protection | Output Overvoltage Protection (OVP) |
Key Features
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Ultra-Wide 4.2-100VDC Input Envelope: Tolerates severe input voltage fluctuations from battery banks, solar arrays, or unregulated industrial power buses without hardware failure.
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Up to 97% Conversion Efficiency: High-efficiency buck power topology minimizes heat dissipation, enabling high-density, fanless control cabinet integration.
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Tool-Free Spring Terminal Interface: Push-in spring terminals drastically speed up field installation and prevent wire loosening caused by continuous industrial vibration.
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Comprehensive Triple Safeguard Suite: Built-in surge/lightning protection, input reverse polarity defense, and output overvoltage protection safeguard sensitive downstream IoT hardware.
Product Selection Guide
Selection Tip: Always verify system input voltage dynamics and total peak load current requirements. Ensure the target module's rated output current exceeds the combined continuous current consumption of your connected IoT devices and field sensors.
| Model SKU | Input Voltage | Output Voltage | Max Output Current | Max Output Power | Max Efficiency | Mounting Type |
|---|---|---|---|---|---|---|
| BDD03-48243A0 | 4.2 - 100 VDC | 24 VDC | 3 A | 72 W | 97% | 35mm DIN-Rail |
| BDD03-80052A0 | 4.2 - 100 VDC | 5 VDC | 2 A | 10 W | 97% | 35mm DIN-Rail |
| BDD03-80121A0 | 4.2 - 100 VDC | 12 VDC | 1 A | 12 W | 97% | 35mm DIN-Rail |
| BDD03-80241A0 | 4.2 - 100 VDC | 24 VDC | 1 A | 24 W | 97% | 35mm DIN-Rail |
| BDD03-4805123A0 | 4.2 - 100 VDC | 5 V / 12 VDC | 3 A | 36 W | 97% | 35mm DIN-Rail |
| BDD03-4805125A0 | 4.2 - 100 VDC | 5 V / 12 VDC | 5 A | 60 W | 97% | 35mm DIN-Rail |
Industrial Installation & Wiring
The BDD03 series features a compact enclosure engineered for standard 35mm DIN-rail mounting inside industrial control panels. Field wiring utilizes push-in spring terminals that allow direct, tool-free conductor insertion. To wire the module, push stripped wire leads directly into the terminal slots until clamped; press the release lever with a small pin to detach conductors during maintenance.
Practical Application Scenarios
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Powering Outdoor Solar-Powered LoRaWAN Base Stations
In remote environmental and smart agriculture deployments, 24V or 48V solar battery systems produce wide voltage fluctuations during charging cycles. The BDD03 series steps down variable 48V DC bus power directly to a stable 12V or 5V rail to supply continuous, low-ripple power to Ebyte outdoor LoRaWAN gateways and Sub-GHz RF transceivers, enduring harsh outdoor ambient thermal shifts.
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Industrial Automation Control Cabinets and PLC Power Distribution
Inside factory distribution panels, edge controllers share main DC buses with heavy inductive loads. Deploying the DIN-rail BDD03-48243A0 module allows system integrators to drop 48V or 72V DC bus lines down to 24V 3A to drive Ebyte Modbus RS485 serial servers, ethernet gateways, and distributed digital I/O modules, isolating control electronics from motor switching transients.
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Intelligent Highway and Streetlight Monitoring Cabinets
Smart transportation enclosures along highway corridors suffer from line surges and grid switching transients. Utilizing BDD03-80241A0's built-in lightning and surge protection, municipal engineers safely step down internal 48V/80V DC rails to 24V 1A or 12V 1A, powering Ebyte 4G/5G DTUs and lighting controllers reliably without risking port burnout over extended cabinet wiring.
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Railway Transit Signal Sensing and Wayside Telemetry Nodes
Rail side-track monitoring systems rely on wide-input DC power conversion from battery backups to run trackbed sensors and telemetry units. The BDD03 module's tool-free spring terminals resist constant mechanical vibration from passing trains, delivering a stable 5V or 12V supply to Ebyte SPI radio modules and GNSS positioning units for continuous asset location and condition tracking.
FAQ Section
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What is the advantage of push-in spring terminals over screw terminals in industrial cabinets?
Push-in spring terminals provide constant, self-adjusting clamping pressure on conductors, eliminating wire loosening caused by continuous thermal expansion or industrial mechanical vibration. They also reduce installation time by over 50% since no screwdrivers are required during cabinet assembly or field maintenance.
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How does the ultra-wide 4.2-100VDC input range benefit solar and battery-backed IoT deployments?
Off-grid solar arrays and industrial battery banks undergo significant voltage swings during charging cycles, cold starts, or sudden load shedding. The 4.2-100VDC operating envelope ensures that the BDD03 buck module remains fully operational without shutting down or experiencing overvoltage damage during transient charging spikes up to 100V.
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Does the BDD03 DC-DC converter require external heat sinks or forced air cooling?
No, the module achieves up to 97% peak conversion efficiency, minimizing internal thermal loss. Its compact housing and DIN-rail mounting structure allow full-load continuous operation in standard industrial control enclosures without requiring external heat sinks or cooling fans.
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What protective features safeguard downstream connected Ebyte IoT devices?
The BDD03 series incorporates comprehensive hardware protection, including input reverse polarity protection (preventing module burnout if power leads are accidentally swapped), input lightning and surge suppression, and output overvoltage protection (OVP) to guarantee steady voltage delivery to sensitive edge devices.
