Vishay Semiconductor Diodes Division
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SMBJ45CA-M3/5B
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SMBJ45CA-M3/5B

Product Overview

The SMBJ45CA-M3/5B 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 overvoltage events, thereby protecting sensitive components from damage. The SMBJ45CA-M3/5B is available in a compact package and is designed to provide efficient and reliable surge protection for a wide range of applications.

Basic Information

  • Category: Transient Voltage Suppressor Diode
  • Use: Surge Protection
  • Characteristics: Rapid Clamping, High Efficiency
  • Package: SMB (DO-214AA)
  • Essence: Protecting Electronic Circuits from Transient Overvoltage Events
  • Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

  • Peak Pulse Power: 600 Watts
  • Breakdown Voltage: 45V
  • Operating Voltage: 38.9V
  • Reverse Standoff Voltage: 45V
  • Clamping Voltage: 77.4V
  • Peak Pulse Current: 15.4A
  • Capacitance: 150pF

Detailed Pin Configuration

The SMBJ45CA-M3/5B features a standard SMB package with two pins. Pin 1 is the anode, while pin 2 is the cathode.

Functional Features

  • Rapid clamping of transient overvoltage events
  • Low clamping voltage
  • High peak pulse power handling capability
  • Fast response time

Advantages and Disadvantages

Advantages

  • Efficient surge protection
  • Compact package size
  • High peak pulse power rating

Disadvantages

  • Limited breakdown voltage compared to higher voltage TVS diodes
  • Higher capacitance compared to some other TVS diodes

Working Principles

The SMBJ45CA-M3/5B operates based on the principle of avalanche breakdown. When a transient overvoltage event occurs, the diode rapidly conducts, diverting the excess energy away from the protected circuit. This action effectively limits the voltage across the circuit, preventing damage to sensitive components.

Detailed Application Field Plans

The SMBJ45CA-M3/5B is widely used in various electronic systems and equipment, including: - Power Supplies - Communication Systems - Industrial Control Systems - Automotive Electronics - Consumer Electronics

Detailed and Complete Alternative Models

  • SMBJ48CA-M3/5B: Similar characteristics with a slightly higher breakdown voltage of 48V
  • SMBJ40CA-M3/5B: Lower breakdown voltage of 40V, suitable for applications with lower operating voltages
  • SMBJ50CA-M3/5B: Higher breakdown voltage of 50V, offering increased protection for higher voltage circuits

In conclusion, the SMBJ45CA-M3/5B transient voltage suppressor diode offers efficient surge protection in a compact package, making it an ideal choice for a wide range of electronic applications.

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技術ソリューションにおける SMBJ45CA-M3/5B の適用に関連する 10 件の一般的な質問と回答をリストします。

  1. What is the SMBJ45CA-M3/5B?

    • The SMBJ45CA-M3/5B is a transient voltage suppressor diode designed to protect sensitive electronic components from voltage spikes and transients.

  2. What is the maximum working voltage of the SMBJ45CA-M3/5B?

    • The maximum working voltage of the SMBJ45CA-M3/5B is 45V.

  3. What is the peak pulse power of the SMBJ45CA-M3/5B?

    • The peak pulse power of the SMBJ45CA-M3/5B is 600W.

  4. How does the SMBJ45CA-M3/5B protect electronic circuits?

    • The SMBJ45CA-M3/5B clamps the voltage across the circuit when it exceeds the specified level, diverting excess current away from sensitive components.

  5. In what type of applications can the SMBJ45CA-M3/5B be used?

    • The SMBJ45CA-M3/5B is commonly used in applications such as power supplies, telecommunications equipment, and automotive electronics.

  6. What are the key features of the SMBJ45CA-M3/5B?

    • The SMBJ45CA-M3/5B features low clamping voltage, fast response time, and high surge capability, making it ideal for protecting sensitive electronics.

  7. What is the operating temperature range of the SMBJ45CA-M3/5B?

    • The SMBJ45CA-M3/5B has an operating temperature range of -55°C to 150°C.

  8. How should the SMBJ45CA-M3/5B be mounted in a circuit?

    • The SMBJ45CA-M3/5B should be mounted close to the protected components, with short leads to minimize inductance.

  9. Can the SMBJ45CA-M3/5B be used for ESD protection?

    • Yes, the SMBJ45CA-M3/5B can be used for electrostatic discharge (ESD) protection in various electronic devices.

  10. Are there any recommended layout considerations when using the SMBJ45CA-M3/5B?

    • It is recommended to provide a low impedance path to ground for the SMBJ45CA-M3/5B and to minimize the length of traces between the device and the protected circuitry.