BY8400 Technical Summary

Overview

The BY8400 is a rugged, high-performance diode housed in a glass passivated package, designed for demanding applications requiring high reliability and durability. This component is engineered to deliver superior performance in high-voltage and high-temperature environments, making it suitable for industrial, automotive, and power supply applications. The BY8400's robust construction ensures long-term stability and resistance to harsh operating conditions.

Features

• Glass Passivated: Enhances reliability and protects against environmental factors such as moisture and contaminants.
• High Maximum Operating Voltage: Capable of handling elevated voltage levels, making it ideal for high-power applications.
• Low Forward Voltage Drop: Minimizes power loss and improves efficiency in circuit designs.
• Fast Switching Speed: Enables rapid response times, suitable for high-frequency applications.
• High Surge Current Capability: Withstands transient overloads without degradation.
• Wide Operating Temperature Range: Performs reliably in extreme temperature conditions.

Applications

The BY8400 is versatile and finds use in a variety of applications, including:

• Power Supplies: Used in rectification circuits for AC-DC conversion.
• Automotive Systems: Suitable for voltage regulation and protection in automotive electronics.
• Industrial Equipment: Deployed in motor drives, inverters, and other high-power industrial systems.
• Telecommunications: Provides surge protection and signal conditioning in communication devices.
• Consumer Electronics: Used in power management circuits for devices requiring high efficiency.

Electrical Characteristics

The following table outlines the key electrical specifications of the BY8400 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 Forward Surge Current (I_FSM): 50A (non-repetitive)
• Operating Junction Temperature Range (T_J): -55°C to +150°C

Typical Electrical Characteristics

• Forward Voltage Drop (V_F): 1.1V at 1A
• Reverse Leakage Current (I_R): 5µA at 1000V
• Reverse Recovery Time (t_rr): 500ns
• Junction Capacitance (C_J): 15pF at 4V, 1MHz

Package Information

The BY8400 is housed in a rugged glass package, designed to withstand mechanical stress and environmental challenges. The package dimensions and pin configuration are as follows:

Mechanical Specifications

• Package Type: Axial Lead Glass Passivated
• Body Diameter: 5.0mm ± 0.2mm
• Body Length: 8.0mm ± 0.5mm
• Lead Diameter: 0.8mm ± 0.05mm
• Lead Length: 25mm ± 2mm (standard)
• Weight: Approximately 0.5 grams

Mounting and Handling

The BY8400 is designed for through-hole mounting on printed circuit boards (PCBs). Care should be taken during assembly to avoid excessive mechanical stress on the leads, which could compromise the integrity of the glass package. Soldering should be performed within the recommended temperature profile to prevent thermal damage.

Reliability and Environmental Compliance

The BY8400 adheres to stringent quality and reliability standards, ensuring consistent performance in critical applications. Key compliance and reliability data include:

• MIL-STD-750: Compliant with military standards for environmental testing.
• RoHS Compliance: Meets Restriction of Hazardous Substances directives.
• ESD Protection: Robust against electrostatic discharge events.
• Flame Retardant: UL94 V-0 rated for flame resistance.

Conclusion

The BY8400 is a high-reliability diode designed for demanding applications where ruggedness, high voltage tolerance, and efficient performance are critical. Its glass passivated construction, combined with excellent electrical characteristics, makes it a preferred choice for engineers working in industrial, automotive, and power supply sectors. With its wide operating temperature range and compliance with international standards, the BY8400 delivers dependable performance in even the harshest environments.