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SMLJ40CA-QH
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SMLJ40CA-QH Encyclopedia Entry

Product Overview

The SMLJ40CA-QH belongs to the category of transient voltage suppressor diodes. These diodes are used to protect sensitive electronic components from voltage spikes and surges. The SMLJ40CA-QH is characterized by its high surge capability, low clamping voltage, and fast response time. It is typically packaged in a DO-214AB (SMC) package and is available in various packaging quantities.

Specifications

  • Part Number: SMLJ40CA-QH
  • Category: Transient Voltage Suppressor Diode
  • Clamping Voltage: 64.5V
  • Peak Pulse Current: 300A
  • Package: DO-214AB (SMC)
  • Packaging Quantity: Available in reels or bulk packaging

Detailed Pin Configuration

The SMLJ40CA-QH follows the standard pin configuration for diodes with two leads, anode, and cathode.

Functional Features

  • High surge capability
  • Fast response time
  • Low clamping voltage
  • Reliable overvoltage protection

Advantages and Disadvantages

Advantages

  • Effective protection against voltage spikes
  • Fast response time ensures minimal impact on the protected circuit
  • Wide operating temperature range

Disadvantages

  • Higher cost compared to traditional diodes
  • Requires careful consideration of placement and routing for optimal performance

Working Principles

When a voltage spike occurs, the SMLJ40CA-QH diode conducts and clamps the voltage to a safe level, protecting downstream components. This is achieved through the rapid transition of the diode into its low impedance state when subjected to a transient overvoltage condition.

Detailed Application Field Plans

The SMLJ40CA-QH is commonly used in applications such as: - Power supply units - Telecommunication equipment - Automotive electronics - Industrial control systems

Detailed and Complete Alternative Models

  • SMLJ5.0CA-QH: Clamping Voltage: 9.2V, Peak Pulse Current: 300A
  • SMLJ12CA-QH: Clamping Voltage: 19.9V, Peak Pulse Current: 300A
  • SMLJ24CA-QH: Clamping Voltage: 39.6V, Peak Pulse Current: 300A

In conclusion, the SMLJ40CA-QH transient voltage suppressor diode offers reliable overvoltage protection with its high surge capability, low clamping voltage, and fast response time. Its application spans across various industries, making it a crucial component in safeguarding sensitive electronic circuits.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av SMLJ40CA-QH i tekniska lösningar

  1. What is the maximum forward voltage of SMLJ40CA-QH?

    • The maximum forward voltage of SMLJ40CA-QH is 3.5V at 50A.

  2. What is the peak pulse power dissipation of SMLJ40CA-QH?

    • The peak pulse power dissipation of SMLJ40CA-QH is 3000W for a 10/1000μs waveform.

  3. What is the breakdown voltage of SMLJ40CA-QH?

    • The breakdown voltage of SMLJ40CA-QH is typically 44.2V.

  4. What is the operating temperature range of SMLJ40CA-QH?

    • The operating temperature range of SMLJ40CA-QH is -55°C to +150°C.

  5. What are the typical applications for SMLJ40CA-QH?

    • SMLJ40CA-QH is commonly used in surge protection for telecommunications equipment, automotive electronics, and industrial control systems.

  6. What is the reverse stand-off voltage of SMLJ40CA-QH?

    • The reverse stand-off voltage of SMLJ40CA-QH is 40V.

  7. Does SMLJ40CA-QH have a low leakage current?

    • Yes, SMLJ40CA-QH has a low leakage current of less than 1μA at its rated voltage.

  8. Is SMLJ40CA-QH RoHS compliant?

    • Yes, SMLJ40CA-QH is RoHS compliant, making it suitable for use in environmentally sensitive applications.

  9. What is the response time of SMLJ40CA-QH to transient voltage spikes?

    • SMLJ40CA-QH has a fast response time of less than 1.0 nanosecond.

  10. Can SMLJ40CA-QH be used for ESD protection?

    • Yes, SMLJ40CA-QH can be used for ESD (electrostatic discharge) protection in various electronic devices and systems.