BY505 Diode Technical Summary

Overview

The BY505 is a rugged, high-performance rectifier diode encapsulated in a glass passivated package. Designed for demanding applications, this diode offers excellent reliability and electrical characteristics, making it suitable for industrial, automotive, and power supply applications. Its robust construction ensures high maximum operating capabilities, even under harsh environmental conditions.

Features

• Glass Passivated: Provides superior protection against environmental factors, enhancing long-term reliability.
• High Maximum Operating Temperature: Capable of functioning efficiently at elevated temperatures, ensuring stability in high-heat environments.
• Low Forward Voltage Drop: Minimizes power loss and improves efficiency in rectification applications.
• High Surge Current Capability: Withstands transient overload conditions, making it ideal for rugged applications.
• Fast Switching Speed: Suitable for high-frequency applications where rapid response is critical.
• High Reverse Voltage Rating: Ensures reliable operation in circuits with high voltage requirements.

Applications

The BY505 diode is versatile and finds use in a wide range of applications, including but not limited to:

• Power Supplies: Used in AC-DC converters, switch-mode power supplies (SMPS), and linear regulators.
• Industrial Equipment: Ideal for motor drives, welding machines, and heavy machinery due to its ruggedness.
• Automotive Systems: Suitable for alternator rectification, battery charging circuits, and other high-reliability automotive applications.
• Consumer Electronics: Employed in appliances, inverters, and other household electronic devices.
• Renewable Energy Systems: Used in solar inverters and wind turbine rectification circuits.

Electrical Characteristics

The following table summarizes the key electrical specifications of the BY505 diode under standard operating conditions (unless otherwise noted):

Absolute Maximum Ratings

• Maximum Repetitive Reverse Voltage (V_RRM): 1000V
• Maximum RMS Voltage (V_RMS): 700V
• Maximum DC Blocking Voltage (V_DC): 1000V
• Maximum Average Forward Current (I_F(AV)): 5A
• Peak Forward Surge Current (I_FSM): 50A (single half-sine wave, 60Hz)
• Operating Junction Temperature Range (T_J): -55°C to +150°C
• Storage Temperature Range (T_STG): -55°C to +150°C

Electrical Parameters

• Forward Voltage Drop (V_F): 1.1V (typical) at I_F = 5A, T_J = 25°C
• Reverse Leakage Current (I_R): 5µA (maximum) at V_R = 1000V, T_J = 25°C
• Junction Capacitance (C_J): 15pF (typical) at V_R = 4V, f = 1MHz
• Reverse Recovery Time (t_rr): 500ns (maximum) at I_F = 1A, I_RR = 1A, T_J = 25°C

Package Information

The BY505 diode is housed in a robust, industry-standard package designed for optimal thermal and electrical performance. The following details outline its mechanical characteristics:

Package Dimensions

• Package Type: DO-201AD (Axial Lead)
• Body Diameter: 5.3mm (max)
• Body Length: 8.0mm (max)
• Lead Diameter: 0.8mm (nominal)
• Lead Length: 25mm (standard)
• Weight: Approximately 1.2 grams

Mounting Information

• Mounting Style: Through-hole
• Recommended PCB Hole Diameter: 0.9mm to 1.0mm
• Soldering Temperature: 260°C (max) for 10 seconds

Thermal Characteristics

The BY505 diode is designed to dissipate heat efficiently, ensuring reliable operation under high-power conditions. Key thermal parameters include:

• Thermal Resistance, Junction to Ambient (R_θJA): 50°C/W (typical)
• Thermal Resistance, Junction to Lead (R_θJL): 25°C/W (typical)

Reliability and Compliance

The BY505 diode adheres to stringent quality and reliability standards, ensuring consistent performance in critical applications. It complies with the following industry standards:

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

Conclusion

The BY505 diode is a high-reliability, glass-passivated rectifier diode designed for demanding applications. Its combination of high voltage capability, low forward voltage drop, and rugged construction makes it an excellent choice for power supplies, industrial systems, automotive electronics, and renewable energy applications. With its robust package and compliance with industry standards, the BY505 ensures long-term performance and durability in even the harshest operating environments.