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1SMA4749 R3G
Product Overview
The 1SMA4749 R3G belongs to the category of Zener diodes and is commonly used for voltage regulation and protection in electronic circuits. This diode exhibits characteristics such as a high surge capability, low leakage current, and a compact package design. It is typically available in a surface mount package and is often used in various electronic devices to maintain stable voltage levels.
Basic Information
- Category: Zener Diode
- Use: Voltage regulation and protection
- Characteristics: High surge capability, low leakage current
- Package: Surface mount
- Essence: Voltage stabilization and protection
- Packaging/Quantity: Typically supplied in reels or tubes containing multiple units
Specifications
- Voltage Range: 15V to 200V
- Power Dissipation: 1.5W
- Operating Temperature Range: -65°C to +150°C
- Zener Voltage Tolerance: ±5%
Detailed Pin Configuration
The 1SMA4749 R3G features a standard surface mount package with two pins. The pinout configuration is as follows: - Pin 1: Anode - Pin 2: Cathode
Functional Features
- Voltage Regulation: Maintains a constant voltage across its terminals.
- Overvoltage Protection: Safeguards sensitive components by diverting excess voltage.
- Compact Design: Suitable for space-constrained applications.
Advantages and Disadvantages
Advantages
- Reliable voltage regulation
- High surge capability
- Compact form factor
Disadvantages
- Limited power dissipation capacity
- Sensitive to temperature variations
Working Principles
The 1SMA4749 R3G operates based on the principle of the Zener effect, where it maintains a nearly constant voltage drop across its terminals when reverse-biased. This allows it to regulate the voltage within a circuit and protect connected components from overvoltage conditions.
Detailed Application Field Plans
The 1SMA4749 R3G finds extensive use in various electronic applications, including: - Power supplies - Voltage regulators - Overvoltage protection circuits - Automotive electronics - Industrial control systems
Detailed and Complete Alternative Models
Some alternative models to the 1SMA4749 R3G include: - 1N4749A - BZX85C15 - MMSZ5248B
In conclusion, the 1SMA4749 R3G Zener diode offers reliable voltage regulation and overvoltage protection in a compact surface mount package, making it suitable for a wide range of electronic applications.
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Énumérez 10 questions et réponses courantes liées à l'application de 1SMA4749 R3G dans les solutions techniques
What is 1SMA4749 R3G?
- 1SMA4749 R3G is a surface mount, high-power, transient voltage suppressor diode designed to protect sensitive electronics from voltage transients induced by lightning, inductive load switching, and electrostatic discharge.
What is the maximum peak pulse power of 1SMA4749 R3G?
- The maximum peak pulse power is 500 watts for a 10/1000μs waveform.
What is the breakdown voltage of 1SMA4749 R3G?
- The breakdown voltage is 15.3V at 1mA.
What are the typical applications for 1SMA4749 R3G?
- Typical applications include protecting telecommunications equipment, portable electronics, automotive systems, and industrial control systems from voltage transients.
What is the operating temperature range of 1SMA4749 R3G?
- The operating temperature range is -55°C to +150°C.
What is the package type of 1SMA4749 R3G?
- It is available in a DO-214AC (SMA) package.
What is the clamping voltage of 1SMA4749 R3G?
- The clamping voltage is 24.4V at 37.5A.
Is 1SMA4749 R3G RoHS compliant?
- Yes, it is RoHS compliant.
What are the key features of 1SMA4749 R3G?
- Key features include low clamping voltage, fast response time, and high surge capability.
What are the recommended PCB layout guidelines for 1SMA4749 R3G?
- Ensure short traces between the device and the protected circuit, use a ground plane for heat dissipation, and minimize the loop area of the input and output connections.