What factors should be considered when TVS is selected

In selectionTVSWhen, fitTVSTo protect the circuit, can ensure the stability and reliability of electronic equipment. Then in addition to the rated voltage, breakdown voltage, package form and temperature range to be considered by engineers, There are also important factors to consider:

1. Maximum peak pulse current:TVSIt should be able to withstand the maximum peak pulse current that may occur in the protected circuit. This value can be determined by calculating the maximum short-circuit current that can occur in the protected circuit.

2. Response time:TVSThe response time should be fast enough to respond in time and protect the protected circuit when an overvoltage occurs. Response times are generally in the nanosecond range.

3. Package type:TVSThe package type of the protected circuit should match the package type of the protected circuit for easy installation and layout.

4. Operating temperature range:TVSIt should be able to work properly within the operating temperature range of the protected circuit.

5. Reliability:TVSIt should have good reliability to ensure long-term stable protection effect.

In addition to the factors mentioned above, in the selectionTVSYou also need to consider the following factors:

1. Diode polarity:TVSIt usually has one-way conductivity and needs to be properly connected in the circuit to achieve a protective effect.

2. Thermal stability:TVSHeat will be generated in the overvoltage protection state, and its thermal stability needs to be considered to avoid overheating resulting in failure or fire risk.

3. Clamp voltage:TVSThe overvoltage can be clamped to a safe level, but the clamp voltage cannot be too low or too high. Too low may cause circuit damage, too high may causeTVSSelf damage.

4. Installation position:TVSThe installation position should be as close as possible to the power inlet of the protected circuit to achieve the protection of the entire circuit.

5. Cost:TVSPrices vary by brand, specification and performance, and need to be cost-effective when choosing.

To sum up, chooseTVSSeveral factors need to be considered, including rated voltage, breakdown voltage, maximum peak pulse current, response time, package type, operating temperature range, reliability, diode polarity, thermal stability, clamp voltage, installation location, and cost.

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