Alternator Diodes

25A 1000V Alternator Diode – Industrial Grade Rectifier Diode

This high-performance 25 Amp, 1000 Volt alternator diode is designed for use in industrial brushless AC generators. It is commonly used in rotating rectifier assemblies found in alternators from Mecc Alte, Stamford, Leroy-Somer, and other OEMs.

Built for reliability and long life, this diode is ideal for converting AC to DC within the exciter system, supplying stable field current to the rotor winding. Its rugged construction and high-voltage tolerance make it suitable for demanding environments, including standby power systems, telecom, mobile, and prime power generators.

Key Features:

• High Current Capacity: Rated at 25 Amps continuous forward current
• High Voltage Tolerance: Supports up to 1000 Volts reverse voltage
• Fast Recovery Time: Enhances performance and reduces power loss
• Stud Mount Design: Provides excellent thermal transfer and easy installation
• Industrial Grade: Suitable for continuous duty in high-vibration and high-temperature generator environments

Typical Applications:

• Rotating rectifier assemblies in brushless alternators
• Replacement diode kits for Mecc Alte, Stamford, Leroy-Somer, and similar generators
• Diesel generator sets for commercial, mobile, and standby use

Technical Specifications:

• Forward Current (IF): 25 A continuous
• Peak Reverse Voltage (VRRM): 1000 V
• Surge Current (IFSM): Typically 300–400 A (varies by part number)
• Mounting Type: Axial