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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
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What should I pay attention to when TVS diodes (ESD protection diodes) do not work properly?

If the IC to be protected is destroyed by static electricity even in the presence of ESD protection devices, ESD protection performance is insufficient for this IC. Care should be exercised especially when the IC to be protected has low ESD immunity.

The following figure compares the first peak voltage at the input of the IC following the replacement of two different TVS diodes. Although being similar in functionality, these TVS diodes exhibit different clamp voltages. (DF2B5M5SL: 9.6 V typical at 4 A; competitor’s TVS diode: 13 V typical at 4 A). This figure indicates that the DF2B5M5SL provides more robust protection against ESD pulses. Note that even similar TVS diodes exhibit considerably different ESD protection performance.

It is important to select the optimum TVS diode according to the application requirements.

figure compares the first peak voltage at the input of the IC following the replacement of two different TVS diodes : 1
figure compares the first peak voltage at the input of the IC following the replacement of two different TVS diodes : 2
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