[TowerTalk] PL-259 Voltage Breakdown

Steve Katz stevek at jmr.com
Tue Dec 11 13:41:56 EST 2007

I've had PL-259s fail hipot (set to 3mA trip point) at way under 6 kV.
It depends on the air around them.  Air's a great dielectric when it's
dry (0% humidity) and a lousy one when it's wet (100% humidity).
Without a controlled environment, you can't define the BV of this kind
of part.

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Roger (K8RI)
Sent: Tuesday, December 11, 2007 10:33 AM
To: TOWERTALK at contesting.com
Subject: Re: [TowerTalk] PL-259 Voltage Breakdown

>Did you see this on Amphenol's website? I didn't search other mfgrs.

500 V breakdown, or working is unrealistic for a good connector. IIRC
is about what teflon is rated per mil. Even air, which you have between
conductors at the interface between connectors would be much higher than
V .

I've run as high as 6KV on them.  Hy-pot one and it'll probably be good
about 12KV, but I'd not want to run one that high.

Roger (K8RI)



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