BYD33 - Cavity Free Cylindrical Glass Package Diode

Overview

The BYD33 is a high-performance diode featuring a cavity-free cylindrical glass package, designed for reliability and efficiency in demanding applications. Its glass passivation ensures superior protection against environmental factors, making it suitable for a wide range of industrial and electronic uses. The BYD33 is engineered to deliver high maximum operating performance, ensuring stability and longevity in various circuit configurations.

Features

• Glass Passivated: Provides excellent protection against moisture and contaminants, enhancing long-term reliability.
• High Maximum Operating Performance: Capable of handling high voltage and current levels, making it ideal for power applications.
• Cavity-Free Design: Eliminates internal voids, reducing the risk of mechanical failure and improving thermal performance.
• Low Forward Voltage Drop: Enhances efficiency by minimizing power loss during operation.
• Fast Switching Speed: Suitable for high-frequency applications, ensuring minimal delay in signal processing.
• Robust Construction: The cylindrical glass package offers mechanical strength and resistance to thermal stress.

Applications

The BYD33 diode is versatile and can be used in a variety of applications, including but not limited to:

• Power Supplies: Used in rectification circuits to convert AC to DC.
• Voltage Regulation: Provides stable voltage output in regulator circuits.
• Signal Demodulation: Extracts information from modulated signals in communication systems.
• Protection Circuits: Safeguards sensitive components from voltage spikes and reverse polarity.
• Industrial Equipment: Ensures reliable operation in harsh environments, such as manufacturing and automation systems.
• Consumer Electronics: Found in devices like power adapters, LED drivers, and battery chargers.

Electrical Characteristics

The following table outlines the key electrical specifications of the BYD33 diode under standard operating conditions (unless otherwise noted):

Absolute Maximum Ratings

• Maximum Repetitive Reverse Voltage (V_RRM): 200V
• Maximum RMS Voltage (V_RMS): 140V
• Maximum DC Blocking Voltage (V_DC): 200V
• Maximum Forward Current (I_F): 3A
• Peak Forward Surge Current (I_FSM): 50A (for 8.3ms single half-sine wave)
• Operating Junction Temperature Range (T_J): -65°C to +150°C
• Storage Temperature Range (T_STG): -65°C to +175°C

Typical Electrical Characteristics

• Forward Voltage Drop (V_F): 1.1V at 3A
• Reverse Leakage Current (I_R): 5µA at 200V
• Junction Capacitance (C_J): 15pF at 0V, 1MHz
• Reverse Recovery Time (t_rr): 50ns

Package Information

The BYD33 diode is housed in a robust cylindrical glass package, designed for easy integration into various circuit designs. Below are the detailed package specifications:

Mechanical Dimensions

• Package Type: DO-41 (Cylindrical Glass)
• Body Diameter: 2.7mm (max)
• Body Length: 5.2mm (max)
• Lead Diameter: 0.8mm (nominal)
• Lead Length: 25.4mm (standard)
• Weight: Approximately 0.35 grams

Mounting Information

• Mounting Style: Through-hole
• Recommended PCB Hole Diameter: 0.9mm to 1.0mm
• Soldering Temperature: 260°C max for 10 seconds
• Terminal Finish: Tin-plated leads for improved solderability

Marking and Identification

The BYD33 diode is marked with the following identification for traceability and part recognition:

• Part Number: "BYD33" printed on the body
• Cathode Indicator: A colored band (typically black or white) denotes the cathode terminal

Reliability and Compliance

The BYD33 diode adheres to industry standards and undergoes rigorous testing to ensure reliability. Key compliance and reliability data include:

• ESD Protection: Meets MIL-STD-883 Method 3015 (Class 1)
• Flammability Rating: UL94 V-0 compliant
• RoHS Compliance: Conforms to RoHS Directive 2011/65/EU
• Lead-Free: Compliant with Directive 2002/95/EC

Conclusion

The BYD33 diode is a high-reliability component designed for demanding applications where performance and durability are critical. Its glass passivation, high maximum operating ratings, and robust package make it an excellent choice for power supplies, industrial equipment, and consumer electronics. With its fast switching speed and low forward voltage drop, the BYD33 ensures efficient and reliable operation in a wide range of electronic circuits.