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SMBJ45A-E3/5B
Product Overview
The SMBJ45A-E3/5B belongs to the category of transient voltage suppressor diodes (TVS diodes) and is commonly used for surge protection in electronic circuits. These diodes are characterized by their ability to rapidly clamp transient voltages to a safe level, thereby protecting sensitive components from damage. The SMBJ45A-E3/5B is available in a compact package and is designed to provide efficient and reliable overvoltage protection in various applications.
Basic Information
- Category: Transient Voltage Suppressor Diode
- Use: Surge protection in electronic circuits
- Characteristics: Rapid clamping of transient voltages, compact package
- Package: DO-214AA (SMB), 2-Pin
- Essence: Protection of sensitive electronic components from overvoltage events
- Packaging/Quantity: Available in reels or bulk packaging, quantity varies based on supplier
Specifications
- Peak Pulse Power: 600W
- Breakdown Voltage: 45V
- Operating Voltage: 38.9V
- Reverse Standoff Voltage: 45V
- Clamping Voltage: 77.4V
- Peak Pulse Current: 15.4A
- Operating Temperature Range: -55°C to +150°C
Detailed Pin Configuration
The SMBJ45A-E3/5B features a simple 2-pin configuration, with one pin designated for the anode and the other for the cathode. The anode is typically marked with a band or notch on the diode body for easy identification.
Functional Features
- Transient Voltage Suppression: Effectively clamps transient voltages to protect downstream components.
- Fast Response Time: Rapidly responds to overvoltage events to minimize potential damage.
- Low Clamping Voltage: Provides efficient protection while limiting the voltage across the protected circuit.
Advantages and Disadvantages
Advantages
- Effective surge protection for sensitive electronic components
- Compact form factor for easy integration into circuit designs
- Fast response time ensures minimal disruption during overvoltage events
Disadvantages
- Limited to specific voltage and power handling capabilities
- May require additional circuitry for comprehensive overvoltage protection in complex systems
Working Principles
The SMBJ45A-E3/5B operates based on the principle of avalanche breakdown, where it rapidly conducts excess current when subjected to a transient voltage spike. This action effectively diverts the excessive energy away from the protected circuit, preventing damage to downstream components.
Detailed Application Field Plans
The SMBJ45A-E3/5B finds extensive use in various electronic systems, including: - Telecommunications Equipment: Protects sensitive communication modules from lightning-induced surges. - Industrial Control Systems: Safeguards control circuitry from voltage transients caused by inductive loads. - Consumer Electronics: Provides overvoltage protection for devices such as smartphones, tablets, and laptops.
Detailed and Complete Alternative Models
- P6KE45CA: Similar TVS diode with a peak power rating of 600W and a breakdown voltage of 45V.
- 1.5SMC45CA: TVS diode offering comparable surge protection capabilities with a peak pulse power of 1500W and a breakdown voltage of 45V.
- SMAJ45A: Lower power TVS diode suitable for applications with less stringent surge protection requirements.
In conclusion, the SMBJ45A-E3/5B transient voltage suppressor diode offers efficient surge protection in a compact package, making it an essential component in safeguarding electronic circuits from overvoltage events.
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