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TSD05C: 8V VRMS

Shoo Saga
Intellectual 2741 points
Part Number: TSD05C

Tool/software:

Hi team,

Customer use TSD05C in 8V VRMS condition. When they are using in that condition, the device works clamping correctly.

1. Is it ok for the device applied 8V constantly? even if the breakdown voltage is 7Vmin. The leakage current is not concern for the customer.

2.  that condition doesn't affect the device lifetime?

Regards,

Shoo

  • 0
    Guru 317390 points

    8 V RMS is ±11.3 V peak-to-peak.

    A TVS diode is designed only for short, transient voltages; this is why only peak pulse power/current limits are specified.

    What is the actual leakage current? Figures 5-1/5-2 show a typical current of about 5 A, with a power dissipation of 40 W; the resulting junction temperature would be about 27000 °C.

  • 0
    TI__Mastermind 18360 points

    Hi Shoo,

    As Clemens mentioned TVS diodes are designed for short transient voltages in the nS-uS range. This could definitely damage the diode depending on the current flow, as it will continously conduct and overheat until it eventually fails. 

    What is the purpose of TSD05C in your application? Are you trying to clamp the 8V condition to avoid damage to an IC downstream?

    Or do you want the diode for ESD/Surge protection and ideally it would not clamp during the 8V condition? 

    If you need to clamp a DC overvoltage, I would recommend a Zener diode like BZX84C8V2 or SZMM5Z8V2-Q1.

    Regards,

    Sebastian