MDD26-14N1B Rectifier Diode Module

MDD26-14N1B Rectifier Module is a high-power rectifier diode module used in industrial electronic systems and power supplies.

This product is commonly used in industrial power supplies, three-phase rectifiers, PWM inverters, DC motor drive power supplies, and other power electronic equipment.

Specifications of MDD26-14N1B Rectifier

• Max Repetitive Peak Reverse Voltage (VRRM): 1400 V
• Average Rectified Current: 36 A
• Max Forward Voltage Drop: 1.38 V
• Max Surge Current: 650 A
• Max Operating Temperature: 150°C
• Diode Configuration: Dual diode (2 diodes in series)
• Package Type: TO-240AA, 3 pins
• Mounting Type: Chassis or heatsink mount

Key Advantages of MDD26-14N1B

• Safe Isolation: The base of the module is fully isolated from the internal electrical terminals (isolation up to 3000V AC). This allows mounting multiple modules on the same metal heatsink without short-circuit risks.
• Excellent Thermal Load Capacity: Thanks to the solid copper base structure, heat generated during rectification is dissipated rapidly, ensuring stable operation at high power.
• Industrial Standard Reliability: IXYS utilizes planar wafer technology to increase durability against sudden electrical surges, minimizing failure risks in production lines.
• Space-Optimized Design: Integrating 2 diodes into 1 block reduces PCB size and the number of wiring connection points.

Installation and Usage Notes

1. Heatsink is Mandatory: At currents above 10A, the module generates significant heat. You must mount the module on an aluminum or copper heatsink and apply a thin, even layer of thermal paste for optimal heat transfer.
2. Tightening Torque: When fastening the module to the heatsink and connecting the terminals, adhere to the torque specified in the technical documentation (typically 2.5 - 4 Nm). Over-tightening can crack the plastic housing, while under-tightening can cause arcing at contact points.
3. Overcurrent Protection: Always use an appropriate fast-acting fuse to protect the module from short circuits, as semiconductor components are highly sensitive to sudden current overloads.
4. Check Polarity: Before powering up, carefully check the pinout diagram (Anode/Cathode) printed on the module to avoid incorrect wiring that could cause circuit damage.

MDD26-14N1B Rectifier Module is a high-power rectifier diode module featuring high voltage tolerance, stable load current, and excellent thermal durability. With its compact dual-diode integrated design, it optimizes energy conversion efficiency and reduces installation space in industrial electrical systems.