[SOLVED] ESD protection diode

[rayhh27]

Hi,

I am intending on using an ESD protection diode for my GPS antenna, however when I search for ESD protection diode, I have come across 2 difference diode, which look like the attached images.
Can anyone tell me what is the difference in both ESD protection diode?
From reading in the internet I found out that for antenna line, the diode should have capacitance less than 0.5pF, is it even better if I use capacitance like 0.2pF or 0.5 pF will just work absolutely fine?

Thank you.

Best regards,

RH

 

[KlausST]

Hi.

One diode is unipolar, the other is bipolar.

If it says less than 0.5pF, then 0.5pF is the max limit. It is better to choose a diode with less capacitance.

Klaus