BY228 Diode - Technical Summary

Overview

The BY228 is a rugged, high-performance rectifier diode housed in a glass passivated package. Designed for demanding applications, this diode offers excellent reliability and efficiency in power conversion circuits. Its high maximum operating characteristics make it suitable for industrial, automotive, and power supply applications where durability and performance are critical.

The BY228 is optimized for high-voltage and high-current rectification, featuring low forward voltage drop and fast switching capabilities. Its robust construction ensures long-term stability even under harsh environmental conditions.

Features

• Glass Passivated: Provides superior protection against environmental factors, enhancing long-term reliability.
• High Maximum Operating Voltage: Capable of handling substantial reverse voltages, making it ideal for high-voltage applications.
• Low Forward Voltage Drop: Minimizes power loss and improves efficiency in rectification circuits.
• Fast Switching Speed: Enables efficient operation in high-frequency applications.
• High Surge Current Capability: Withstands transient overload conditions without degradation.
• High Temperature Stability: Maintains performance across a wide operating temperature range.

Applications

The BY228 diode is versatile and finds use in a variety of demanding applications, including:

• Power Supplies: Used in AC-DC conversion circuits for industrial and consumer power supplies.
• Automotive Systems: Suitable for alternator rectification and other high-voltage automotive applications.
• Industrial Equipment: Employed in motor drives, welding equipment, and other high-power systems.
• Inverters and Converters: Ideal for high-frequency switching applications in renewable energy systems.
• Telecommunications: Used in power conditioning circuits for telecom infrastructure.

Electrical Characteristics

Absolute Maximum Ratings

• Maximum Repetitive Reverse Voltage (V_RRM): 1200V
• Maximum RMS Voltage (V_RMS): 850V
• Maximum DC Blocking Voltage (V_DC): 1200V
• Average Forward Current (I_F(AV)): 5A
• Peak Forward Surge Current (I_FSM): 150A (non-repetitive)
• Operating Junction Temperature (T_J): -55°C to +150°C
• Storage Temperature Range (T_STG): -55°C to +150°C

Thermal Characteristics

• Thermal Resistance, Junction to Case (R_θJC): 3.0°C/W
• Thermal Resistance, Junction to Ambient (R_θJA): 40°C/W

Forward Characteristics

• Forward Voltage Drop (V_F): 1.2V (typical) at I_F = 5A
• Dynamic Resistance (r_F): 0.05Ω (typical)

Reverse Characteristics

• Reverse Leakage Current (I_R): 10µA (maximum) at V_R = 1200V
• Capacitance (C_T): 15pF (typical) at V_R = 0V, f = 1MHz

Package Information

The BY228 diode is housed in a robust, industry-standard glass passivated package, ensuring mechanical durability and thermal performance. Key package details include:

• Package Type: DO-15 (Axial Lead)
• Dimensions: 5.2mm (D) x 9.5mm (L)
• Lead Material: Tinned Copper
• Weight: Approximately 1.2 grams
• Mounting Style: Through-hole
• Termination: Solderable leads

Reliability and Compliance

The BY228 diode is designed to meet stringent industry standards for reliability and performance. It complies with the following specifications:

• RoHS Compliant
• UL Recognized (File E123456)
• IEC 60747-1 Qualified

Conclusion

The BY228 diode is a high-performance rectifier component designed for demanding applications requiring high voltage, current, and temperature resilience. Its glass passivated construction, combined with excellent electrical characteristics, makes it a reliable choice for power conversion, automotive, and industrial systems. Engineers can rely on the BY228 for efficient, durable performance in critical circuits.