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.
On 02/04/2022 8:38 AM Reinier Gerritsen <r.gerritsen@...> wrote:
Solved this problem a few years ago. I protected my nanovna V2.2 with a
TVS diode: ESD101B102ELE6327XTMA1, a 5.5V TVS bi-directional diode from
Infineon, 0.1 pF capacitance.
Soldered directly at the input on the pcb. I did not see any difference
in return loss matching. You could introduce a series capacitor to
prevent DC connection related failures. I think (not for sure) that the
TX port does not have one, but the RX port does.
Had to replaced the input switches in 3 different nanovnaV2.2? units
failing in a timespan a few days. All units back to life now.
Reinier
