MDK Rectifier Diode Module 135A–200A 1600V Solar Anti-Backflow
MDK Rectifier Diode Module 135A–200A 1600V Solar Anti-Backflow
MDK High-Current Rectifier Diode Module — 135A / 160A / 182A / 200A, 1600V
The MDK series rectifier diode module is engineered for demanding photovoltaic (PV) solar systems, DC power circuits, and industrial power electronics. Available in 135A, 160A, 182A, and 200A ratings at up to 1600V, this module delivers robust anti-backflow (anti-reverse current) protection and freewheeling diode functionality — keeping your solar array, battery charging system, or DC power supply running safely and efficiently.
Key Features
- High Current Capacity: Available in 135A, 160A, 182A, and 200A on-state average current ratings to suit a wide range of applications.
- High Voltage Rating: Max forward and reverse voltage of 1600V, suitable for high-voltage DC solar and industrial circuits.
- Anti-Reverse / Anti-Backflow Protection: Prevents reverse current flow from batteries or loads back into the photovoltaic source, protecting your solar panels and charge controller.
- Freewheeling Diode Function: Suppresses inductive voltage spikes in motor drive and switching circuits, extending component lifespan.
- Customizable: Custom configurations are available — contact us with your specific requirements.
- Brand New Condition: Each unit is factory-fresh with no high-concern chemicals.
Specifications
| Model Series | MDK |
| Current Ratings | 135A, 160A, 182A, 200A (on-state average) |
| Max. Forward Voltage | 1600V |
| Max. Reverse Voltage | 1600V |
| Type | Rectifier Diode Module |
| Application Voltage | 220V AC input compatible |
| Condition | New |
| High-Concern Chemicals | None |
| Country of Origin | Made in China |
⚠️ Important Selection & Installation Notes
1. Current Rating Selection
The rated current is the on-state average value, not the continuous RMS operating value. Always apply adequate safety margins:
- Resistive loads: Actual current (A) × 2 to 2.5 = Required module nominal current (A)
- Inductive loads: Actual current (A) × 6 to 7 = Required module nominal current (A)
2. Heat Sink Configuration
When operating at actual working currents above 5A, a suitable heat sink must be installed to ensure safe thermal management and long-term reliability.
3. Stock & Bulk Orders
Standard models are available from stock and can ship immediately. For bulk or custom quantity orders, please contact our customer service team to confirm availability and lead times.
Typical Applications
- Photovoltaic (PV) solar panel anti-backflow protection
- DC battery charging circuit isolation
- Industrial motor drive freewheeling circuits
- High-power rectifier and power supply circuits
- DC bus protection in renewable energy systems
For general guidance on electrical safety standards for power electronics used in photovoltaic systems, refer to the U.S. Department of Energy — Solar Power Guide. For electrical component safety standards and compliance, visit CPSC.gov.
Frequently Asked Questions
Q: What is the difference between the 135A, 160A, 182A, and 200A MDK diode modules?
A: The key difference is the on-state average current rating. The 135A module handles lower-current applications, while the 200A module is suited for higher-power solar or industrial circuits. All variants share the same 1600V voltage rating. Choose your module based on your actual load current multiplied by the recommended safety margin (2–2.5× for resistive loads, 6–7× for inductive loads).
Q: Do I need a heat sink with these rectifier diode modules?
A: Yes. Any time the actual operating current exceeds 5A, a properly rated heat sink is required. Operating without a heat sink at higher currents will cause the module to overheat, reducing performance and lifespan. Select a heat sink appropriate for the current rating and your ambient operating temperature.
Q: Can this MDK diode module be used for solar panel anti-backflow protection?
A: Absolutely. The MDK rectifier diode module is specifically designed for photovoltaic (PV) DC circuits. Its anti-reverse and anti-backflow characteristics prevent current from flowing back from the battery or load into the solar panels, protecting your system components.
Q: Is customization available for the MDK diode module?
A: Yes, custom configurations are supported. Please contact our customer service team with your required specifications — including current rating, voltage requirements, and order quantity — and we will confirm availability and delivery timelines.