BZT52C4V7SQ-7-F

Diodes Inc BZT52C4V7SQ-7-F Overview

The Diodes Inc BZT52C4V7SQ-7-F is a Zener diode designed for voltage regulation and protection applications. This device provides precise voltage clamping to protect sensitive components in electronic circuits from over-voltage conditions. As part of the BZT52 series, the BZT52C4V7SQ-7-F offers high power dissipation, low dynamic resistance, and stable performance across a wide temperature range. It is an excellent choice for low-voltage protection, clamping applications, and voltage regulation in both consumer and industrial electronics.

### Core Features

* Zener Diode for Voltage Clamping: The BZT52C4V7SQ-7-F is a Zener diode with a Zener voltage of 4.7V, designed to regulate voltage levels and protect circuits from voltage spikes or surges. The diode allows current to flow normally, but once the voltage exceeds the specified Zener voltage, the diode clamps the voltage to a safe level, preventing damage to downstream components.
* Compact SOD-123 Package: The device comes in a SOD-123 package, which provides a small form factor while offering sufficient power dissipation capabilities. The compact package makes it suitable for space-constrained applications while maintaining high efficiency and reliability.
* Low Dynamic Resistance: The BZT52C4V7SQ-7-F offers a low dynamic resistance, which minimizes the voltage drop across the diode during operation, improving the overall voltage regulation and reducing power loss in the circuit.
* Stable Zener Voltage: The Zener voltage of 4.7V is stable across a wide range of operating conditions, providing reliable protection for circuits that require precision voltage clamping. This makes it ideal for applications where consistent and accurate voltage control is critical.
* High Power Dissipation: The device is designed to handle significant power dissipation, making it capable of absorbing energy from transient voltage spikes without failure. This ensures the protection of sensitive components even in demanding environments.

### Electrical Specifications

The BZT52C4V7SQ-7-F is designed to provide high performance in voltage regulation and transient protection applications.

* Zener Voltage (Vz): 4.7V ±5% at 5mA (typical). This means that the device will regulate voltage and clamp it at 4.7V with a tolerance of ±5%, ensuring accurate voltage control in the circuit.
* Reverse Leakage Current (Ir): Typically 0.25µA at 4.7V, and max 1µA at 4.7V. This low reverse leakage current indicates that the diode does not waste power when it is not clamping voltage, which contributes to its efficiency and long-term reliability.
* Test Current (Iz): The typical test current for the diode is 5mA, which is commonly used to determine the Zener voltage at the rated reverse voltage.
* Power Dissipation (Pd): The diode is rated for a maximum power dissipation of 500mW. This power rating ensures that the diode can handle voltage spikes and transients without overheating or being damaged, making it suitable for high-energy applications.
* Dynamic Resistance (rz): The typical dynamic resistance is 50Ω at a test current of 5mA. This low dynamic resistance results in minimal voltage drop across the diode, allowing for better voltage regulation.
* Capacitance (C): The typical junction capacitance is 4pF at 0V and 1MHz. This low capacitance ensures that the diode operates efficiently at high frequencies and does not introduce significant signal degradation in AC circuits.

### Thermal and Power Management

Efficient thermal management is crucial for components like Zener diodes, which are designed to dissipate power during operation, especially during voltage clamping.

* Operating Temperature Range: The BZT52C4V7SQ-7-F has an operating temperature range of -55°C to +150°C, which allows it to be used in both consumer-grade and industrial applications. This wide range ensures that the diode operates reliably in harsh environments, making it suitable for automotive, telecom, and industrial electronics.
* Storage Temperature Range: The diode can be safely stored within a temperature range of -55°C to +150°C, which protects it from damage during long-term storage or handling.
* Thermal Resistance: The thermal resistance of the device is optimized to allow for efficient heat dissipation, ensuring the diode can handle power surges without overheating. With the compact SOD-123 package, the BZT52C4V7SQ-7-F can efficiently dissipate heat to the surrounding environment.

### Package and Integration

The BZT52C4V7SQ-7-F comes in a SOD-123 package, which offers a compact form factor with high performance and reliability.

* Package Type: The SOD-123 package is a surface-mount package that is widely used for small signal devices. This package type is space-efficient, easy to integrate into surface-mount PCB designs, and ensures reliable electrical performance with minimal lead inductance.
* Package Dimensions: The package has small dimensions of 2.60mm x 1.30mm (L x W), making it suitable for modern, compact, and high-density circuit designs.
* Pin Configuration: The BZT52C4V7SQ-7-F has a 2-pin configuration for easy integration into the circuit. The pins are designed for surface-mount soldering, ensuring secure attachment to the PCB.

### Applications

The BZT52C4V7SQ-7-F is designed for use in a wide range of voltage regulation and over-voltage protection applications. Its stable Zener voltage, low power consumption, and small size make it an ideal choice for the following applications:

* Voltage Regulation: The diode can be used in voltage regulation circuits, where precise clamping of the voltage to a desired level is necessary, such as in power supply circuits, voltage reference circuits, and regulation of voltage-sensitive components.
* Transient Voltage Suppression: The device is well-suited for transient voltage suppression applications, where it can absorb spikes or surges in voltage to protect sensitive electronics such as microcontrollers, sensors, and communication devices.
* Consumer Electronics: The BZT52C4V7SQ-7-F is commonly used in consumer electronics such as television sets, audio systems, smartphones, and portable devices where it is necessary to protect against over-voltage conditions and ensure safe operation.
* Automotive Electronics: The diode is useful in automotive applications where voltage protection is required for ECUs (electronic control units), sensors, and other automotive electronics exposed to transient voltage conditions.
* Industrial Equipment: The diode is used in industrial control systems for protecting circuits from voltage spikes caused by equipment switching, lightning strikes, or other transient conditions.

### Key Specifications

* Zener Voltage (Vz): 4.7V ±5% at 5mA
* Reverse Leakage Current (Ir): 0.25µA (typical), 1µA (max) at 4.7V
* Power Dissipation (Pd): 500mW (max)
* Dynamic Resistance (rz): 50Ω (typical) at 5mA
* Capacitance (C): 4pF at 0V, 1MHz
* Operating Temperature Range: -55°C to +150°C
* Package Type: SOD-123
* Storage Temperature Range: -55°C to +150°C

### Conclusion

The Diodes Inc BZT52C4V7SQ-7-F is a highly reliable and compact Zener diode with precise voltage clamping and over-voltage protection capabilities. Its 4.7V Zener voltage, low dynamic resistance, and low leakage current make it an excellent choice for a wide range of applications, including voltage regulation, transient voltage suppression, and protecting sensitive electronic circuits. Its small SOD-123 package makes it ideal for use in space-constrained designs, and its wide operating temperature range ensures dependable performance in both consumer electronics and industrial systems.