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Re: Is there a known ch0 input protection mod? #problem #nanovna


 

I missed the trigger voltage. The Infineon triggers at 6.1 volts and clamps at a lower voltage depending upon current. I'll look for an equivalent or order the Infineon.

Mike N2MS

On 02/04/2022 11:08 AM Jim Lux <jim@...> wrote:


On 2/4/22 7:59 AM, N2MS wrote:
I checked this Infineon diode on Mouser and it shows "Not recommended for new design:

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Has anyone used this Bourns part:

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It has low capacitance the the 0603 size with solderable ends may be easier to solder to the connector.

Mike N2MS
Very different parts.? The Infineon part triggers at a few volts. The
Bourns part triggers at 250V, and then clamps to 25V.

By the time the Bourns part triggers, your front end is dead.

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