The BZX85C18RL is a 1.3 Watt Zener diode manufactured by NXP Semiconductors (formerly Freescale). It is designed to provide a stable reference voltage of approximately 18 volts for a wide range of electronic circuits. The diode is housed in a DO-41 package and is commonly used for voltage regulation, overvoltage protection, and clipping applications.

Applications

• Voltage Regulation: Used to maintain a stable voltage output in power supplies and voltage regulators.
• Overvoltage Protection: Protects sensitive electronic components from voltage spikes and transients.
• Clipping Circuits: Limits the voltage swing of a signal to prevent damage to downstream circuitry.
• Reference Voltage: Provides a stable reference voltage for comparators and other analog circuits.
• Transient Voltage Suppression: Suppresses voltage transients caused by inductive loads or switching operations.

Features

• Zener Voltage of 18V: Provides a stable voltage reference at approximately 18 volts.
• Power Dissipation of 1.3W: Can handle relatively high power dissipation compared to smaller signal diodes.
• DO-41 Package: Industry-standard package for through-hole mounting.
• Low Reverse Leakage Current: Minimizes current leakage in the reverse direction.
• Tight Voltage Tolerance: Provides accurate voltage regulation and reference.

Benefits

• Stable Voltage Reference: Ensures consistent and reliable voltage regulation in electronic circuits.
• Overvoltage Protection: Prevents damage to sensitive components from voltage transients.
• Simple Circuit Design: Easy to implement in a variety of circuit configurations.
• Cost-Effective Solution: Provides a reliable and affordable solution for voltage regulation and protection.
• Wide Operating Temperature Range: Suitable for use in a variety of environmental conditions.

Additional Details

The BZX85C18RL has a typical reverse leakage current in the microampere range. The forward voltage drop is typically around 0.7V. The diode's operating temperature range is typically from -65°C to +175°C. For detailed specifications, including exact voltage tolerance, reverse current characteristics, and thermal resistance, refer to the official datasheet provided by NXP Semiconductors.