MDQ Single-Phase Rectifier Bridge Diode Module 30A–500A 1600V
MDQ Single-Phase Rectifier Bridge Diode Module 30A–500A 1600V
MDQ Single-Phase Rectifier Bridge Diode Module — Up to 500A / 1600V
The MDQ series single-phase rectifier bridge module is a high-performance power electronics component engineered for demanding DC conversion applications. Available in a wide range of current ratings — 30A, 40A, 50A, 75A, 100A, 150A, 200A, 250A, 300A, and 500A — with a maximum forward/reverse voltage of 1600V, this module delivers reliable and efficient AC-to-DC rectification for industrial, commercial, and DIY power supply projects.
Compatible with 220V AC input and rated for 12V DC output configurations, the MDQ module integrates seamlessly into motor drives, battery chargers, welding equipment, UPS systems, and general-purpose power supplies. Its compact form factor and industry-standard mounting footprint make installation and heat sink configuration straightforward.
Made in Mainland China.
Key Specifications
- Type: Single-Phase Rectifier Bridge (Rectifier Diode Module)
- Model: MDQ100A1600V (and variants: 30A, 40A, 50A, 75A, 150A, 200A, 250A, 300A, 500A)
- Max. Forward Current: Up to 500A
- Max. Reverse Current: Up to 500A
- Max. Forward Voltage: 1600V
- Max. Reverse Voltage: 1600V
- Input Voltage: 220V AC
- Output: DC 12V compatible
- Condition: Brand New
- Customization: Available — contact customer service for bulk or custom orders
⚠️ Important Selection Guidelines
1. Current Rating Selection
The marked current of the module is the average on-state value, not the long-term effective operating value. Always leave sufficient margin based on your actual working environment:
- Resistive Load: Apply a 2–2.5× margin — Actual Current (A) × 2 to 2.5 = Module Nominal Current (A)
- Inductive Load: Apply a 6–7× margin — Actual Current (A) × 6 to 7 = Module Nominal Current (A)
2. Heat Sink Configuration
When the actual working current exceeds 5A, a suitable heat sink must be configured for safe and reliable operation. Failure to use an adequate heat sink may result in thermal damage to the module.
3. Stock & Bulk Orders
Standard models are in stock and available for immediate dispatch. For bulk orders, please contact customer service to confirm quantities and lead times before placing your order.
Why Choose the MDQ Rectifier Bridge Module?
- ✅ Wide current range selection — find the exact rating for your application
- ✅ High voltage rating (1600V) for demanding industrial environments
- ✅ Compact, industry-standard module format for easy PCB or panel integration
- ✅ Compatible with heat sink mounting for extended operational life
- ✅ Customization available for OEM or special-specification requirements
Typical Applications
- Industrial motor drives and variable frequency drives (VFDs)
- Battery chargers and UPS (Uninterruptible Power Supply) systems
- Welding machines and plasma cutters
- General-purpose AC-to-DC power supplies
- Electroplating and electrolysis equipment
- DC bus power conversion systems
For authoritative guidance on power electronics safety and electrical component standards, refer to OSHA's Electrical Safety Resources.
Frequently Asked Questions
Q: What current ratings are available for the MDQ single-phase rectifier bridge module?
A: The MDQ series is available in multiple current ratings including 30A, 40A, 50A, 75A, 100A, 150A, 200A, 250A, 300A, and 500A, all at a maximum voltage of 1600V. Choose the rating based on your application's load type and apply the appropriate derating margin.
Q: Do I need a heat sink with the MDQ rectifier bridge module?
A: Yes. When your actual operating current exceeds 5A, a compatible heat sink is required. Operating the module without adequate thermal management at higher currents can cause overheating and reduce the component's service life. Heat sinks compatible with the MDQ module footprint are available separately.
Q: How do I select the correct MDQ module current rating for my application?
A: For resistive loads, multiply your actual operating current by 2 to 2.5 to determine the required module nominal current. For inductive loads (motors, transformers, solenoids), multiply your actual operating current by 6 to 7. This derating ensures reliable long-term operation.
Q: Is the MDQ100A1600V rectifier module compatible with 220V AC input?
A: Yes. The MDQ series is designed for use with 220V AC single-phase input, converting it to DC output — suitable for 12V DC bus and other DC power supply configurations depending on your circuit design.
Q: Can I order the MDQ rectifier bridge module in bulk or with custom specifications?
A: Yes. Regular models are in stock and available for direct purchase. For bulk orders or custom specifications, please contact customer service in advance to confirm availability, lead times, and pricing.