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SMDJ78A - Product Overview and Specifications
Introduction
The SMDJ78A is a diode belonging to the category of transient voltage suppressors (TVS). It is designed to protect sensitive electronics from voltage transients induced by lightning, electrostatic discharge (ESD), and other transient voltage events. This entry provides an overview of the SMDJ78A, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.
Basic Information Overview
- Category: Transient Voltage Suppressor Diode
- Use: Protection against voltage transients induced by lightning, ESD, and other transient voltage events
- Characteristics: Fast response time, low clamping voltage, high surge current capability
- Package: Surface Mount
- Essence: Protecting sensitive electronics from voltage transients
- Packaging/Quantity: Typically available in reels or tubes containing multiple units
Specifications
- Part Number: SMDJ78A
- Peak Pulse Power: 3000W
- Breakdown Voltage: 78V
- Operating Temperature Range: -55°C to +150°C
- Reverse Standoff Voltage: 66.3V
- Maximum Clamping Voltage: 106V
- Peak Pulse Current: 50A
Detailed Pin Configuration
The SMDJ78A typically follows a standard surface mount diode package with two terminals for connection. The pin configuration is as follows: - Pin 1: Anode - Pin 2: Cathode
Functional Features
- Fast response time to transient voltage events
- Low clamping voltage to protect downstream components
- High surge current capability for robust protection
Advantages and Disadvantages
Advantages
- Effective protection against voltage transients
- Fast response time
- Low clamping voltage
- High surge current capability
Disadvantages
- Higher cost compared to traditional diodes
- Surface mount package may require specialized soldering techniques
Working Principles
The SMDJ78A operates by diverting excess transient voltage away from sensitive electronics, thereby limiting the voltage that reaches the protected components. When a transient event occurs, the diode rapidly conducts, providing a low impedance path for the excess energy to be safely dissipated.
Detailed Application Field Plans
The SMDJ78A finds extensive use in various applications, including: - Telecommunication equipment - Industrial control systems - Automotive electronics - Power supplies - Consumer electronics
Detailed and Complete Alternative Models
- Alternative Model 1: SMDJ5.0A
- Breakdown Voltage: 5V
- Peak Pulse Power: 3000W
- Package: Surface Mount
- Alternative Model 2: SMDJ15A
- Breakdown Voltage: 15V
- Peak Pulse Power: 3000W
- Package: Surface Mount
- Alternative Model 3: SMDJ30A
- Breakdown Voltage: 30V
- Peak Pulse Power: 3000W
- Package: Surface Mount
In conclusion, the SMDJ78A transient voltage suppressor diode offers effective protection against voltage transients and finds widespread use across various industries.
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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SMDJ78A v technických řešeních
What is the maximum voltage rating of SMDJ78A?
- The maximum voltage rating of SMDJ78A is 78V.
What is the peak pulse power dissipation of SMDJ78A?
- The peak pulse power dissipation of SMDJ78A is 3000W.
What is the typical clamping voltage of SMDJ78A?
- The typical clamping voltage of SMDJ78A is 100V at 10A.
What are the typical applications for SMDJ78A?
- SMDJ78A is commonly used in surge protection for sensitive electronics, such as telecommunications equipment, industrial control systems, and automotive electronics.
What is the operating temperature range of SMDJ78A?
- The operating temperature range of SMDJ78A is -55°C to +150°C.
Does SMDJ78A have a low leakage current?
- Yes, SMDJ78A has a low leakage current, making it suitable for use in high-speed data line protection.
Is SMDJ78A RoHS compliant?
- Yes, SMDJ78A is RoHS compliant, meeting environmental standards.
Can SMDJ78A be used for ESD protection?
- Yes, SMDJ78A can be used for electrostatic discharge (ESD) protection in various electronic devices and systems.
What package type does SMDJ78A come in?
- SMDJ78A is available in a surface mount DO-214AB package.
Are there any recommended layout considerations when using SMDJ78A?
- It is recommended to minimize the length and area of the PCB traces connected to SMDJ78A and to provide adequate thermal relief for efficient heat dissipation.