MDC Rectifier Diode Module 40A–200A 1600V | Power Electronics
MDC Rectifier Diode Module 40A–200A 1600V | Power Electronics
MDC Rectifier Diode Module — 40A to 200A, 1600V
The MDC series rectifier diode module delivers reliable, high-efficiency AC-to-DC conversion across a wide range of current ratings — from 40A all the way up to 200A — with a maximum reverse voltage of 1600V. Built for demanding industrial and electronic power applications, these modules are engineered for stable performance in power supplies, motor drives, welding equipment, battery chargers, and more. Made in Mainland China.
Available Current Ratings
- MDC 40A / 1600V
- MDC 55A / 1600V
- MDC 70A / 1600V
- MDC 90A / 1600V
- MDC 110A / 1600V
- MDC 135A / 1600V
- MDC 160A / 1600V
- MDC 182A / 1600V
- MDC 200A / 1600V
Key Specifications
- Max Forward Current: Up to 200A
- Max Reverse Voltage: 1600V
- Module Type: Rectifier Diode
- Input Voltage: 220V AC compatible
- Condition: Brand New
- Country of Origin: Made in Mainland China
Important Selection Guidelines
The rated current printed on each power module represents the average on-state current value — not the continuous effective RMS operating value. Always apply an adequate safety margin when selecting a module for your application:
- Resistive Load: Apply a 2–2.5× margin — Actual Current (A) × 2 to 2.5 = Required Module Rating (A)
- Inductive Load: Apply a 6–7× margin — Actual Current (A) × 6 to 7 = Required Module Rating (A)
Heat Sink Requirements
When the device operates at actual working currents exceeding 5A, a properly rated heat sink must be installed to ensure thermal stability and long-term reliable operation. Please size your heat sink according to the module's power dissipation at your expected duty cycle.
Availability & Bulk Orders
Standard models across all current ratings are typically held in stock for immediate dispatch. For bulk or custom quantity orders, please contact our customer service team to confirm quantities and lead times before placing your order.
Typical Applications
- Industrial AC-to-DC power supplies
- Variable frequency drives (VFDs) and motor control
- Welding machines and battery chargers
- UPS systems and inverter circuits
- Electroplating and electrolysis equipment
- Automation and control panel power stages
For further technical reference on power electronics safety and electrical component standards, visit the U.S. Consumer Product Safety Commission (CPSC).
Frequently Asked Questions
Q: What does the current rating on an MDC rectifier diode module represent?
A: The current rating (e.g., 40A, 100A, 200A) represents the average on-state forward current, not the continuous RMS value during long-term operation. Always select a module with a sufficient safety margin above your actual application current — typically 2–2.5× for resistive loads and 6–7× for inductive loads.
Q: Do I need a heat sink with the MDC rectifier diode module?
A: Yes. Whenever the actual working current exceeds 5A, a compatible heat sink is required. Proper thermal management ensures stable operation and extends the service life of the module. Size your heat sink based on the module's power dissipation at your specific duty cycle and ambient temperature.
Q: Which MDC rectifier diode module current rating should I choose for my application?
A: First determine your circuit's actual operating current. For resistive loads, multiply that value by 2–2.5 to find the minimum module rating needed. For inductive loads (motors, transformers, solenoids), multiply by 6–7. This ensures the module operates safely within its rated limits under real-world conditions.
Q: Is the 1600V voltage rating the forward or reverse voltage?
A: The 1600V rating applies to both the maximum forward voltage handling and the maximum reverse blocking voltage (Peak Repetitive Reverse Voltage, VRRM). This high voltage rating makes the MDC series suitable for robust industrial power conversion circuits operating on 220V AC mains or higher.