The BZX85B18 is a silicon planar Zener diode manufactured by Vishay. It's designed to provide a stable reference voltage and overvoltage protection in a variety of electronic circuits. As part of the BZX85 series, this diode offers reliable performance and is suitable for applications requiring consistent voltage regulation.

Applications

• Voltage Regulation: Maintaining a stable voltage level in power supplies and other electronic devices.
• Overvoltage Protection: Protecting sensitive components from voltage spikes and surges.
• Transient Suppression: Absorbing voltage transients to prevent damage to circuit elements.
• Reference Voltage: Providing a stable voltage reference for measurement and control circuits.
• Clipping Circuits: Limiting the maximum voltage in a circuit.

Features

• Zener Voltage: 18V nominal Zener voltage.
• High Surge Current Capability: Designed to withstand high surge currents.
• Low Dynamic Resistance: Offers stable voltage regulation under varying current loads.
• Glass Passivated Junction: Provides enhanced reliability and stability.
• DO-41 Package: Comes in a standard axial-lead DO-41 package for easy installation.

Benefits

• Stable Voltage Output: Ensures a consistent voltage level, improving the performance of connected circuits.
• Reliable Protection: Safeguards sensitive components against overvoltage and transient events.
• Easy Integration: The DO-41 package allows for simple installation and integration into existing circuits.
• Long-Term Reliability: Glass passivated junction contributes to long-term stability and reliable operation.
• Cost-Effective Solution: Provides a reliable and affordable option for voltage regulation and protection needs.

Technical Specifications

• Zener Voltage (Vz): 18V ± 5%
• Zener Current (Iz): Refer to Vishay datasheet for specific values.
• Power Dissipation (Pd): 1.3 W
• Operating Temperature Range: -65°C to +175°C
• Forward Voltage (Vf): 1.0 V at If = 100 mA

The BZX85B18 from Vishay is a dependable Zener diode suitable for a wide range of voltage regulation and protection applications. It is essential to consult the official datasheet from Vishay for detailed specifications and application guidelines. Its robust design and stable performance make it a valuable component in various electronic systems.