BZD27C91PHRQG Encyclopedia Entry

Product Overview

The BZD27C91PHRQG belongs to the category of semiconductor devices and is specifically a Zener diode. It is commonly used for voltage regulation and protection in electronic circuits. The characteristics of this product include its ability to maintain a constant voltage across its terminals when it is operated in its breakdown region. The package of the BZD27C91PHRQG is typically a small, surface-mount package, making it suitable for compact electronic designs. Its essence lies in its capability to provide stable voltage references in various applications. The packaging/quantity of the BZD27C91PHRQG usually comes in reels or tubes, with quantities varying based on manufacturer specifications.

Specifications

• Voltage: 91V
• Power Dissipation: 500mW
• Zener Voltage Tolerance: ±5%
• Operating Temperature Range: -65°C to +150°C
• Package Type: SOD-123

Detailed Pin Configuration

The BZD27C91PHRQG typically has two pins, with the cathode connected to the ground and the anode connected to the input voltage.

Functional Features

• Voltage Regulation: The BZD27C91PHRQG provides stable voltage regulation, ensuring that the output voltage remains constant within a specified range.
• Overvoltage Protection: It acts as a protective device by diverting excessive current when the voltage exceeds the specified level.

Advantages and Disadvantages

Advantages

• Precise voltage regulation
• Compact size
• Suitable for surface-mount applications

Disadvantages

• Limited power dissipation capability
• Vulnerable to thermal runaway under certain conditions

Working Principles

The BZD27C91PHRQG operates based on the principle of the Zener effect, where it maintains a nearly constant voltage drop across its terminals when it is reverse-biased and operated in its breakdown region.

Detailed Application Field Plans

The BZD27C91PHRQG finds extensive use in various electronic circuits requiring stable voltage references and overvoltage protection. Some specific application fields include: - Voltage regulators in power supplies - Overvoltage protection in automotive electronics - Signal conditioning circuits in instrumentation

Detailed and Complete Alternative Models

Some alternative models to the BZD27C91PHRQG include: - BZX84C91: Similar voltage rating Zener diode - 1N4731A: Comparable Zener diode with slightly different package type - MM3Z91VT1G: Surface-mount Zener diode with similar characteristics

In conclusion, the BZD27C91PHRQG serves as a crucial component in electronic circuits, providing stable voltage regulation and overvoltage protection in a compact form factor. Its specifications, functional features, advantages, and disadvantages make it suitable for a wide range of applications, while alternative models offer flexibility in design choices.