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Insulated BNC right-angle connector

S

Spehro Pefhany

Hi, all:-

Okay, there are a number of manufacturers of insulated (to the panel)
R/A BNC connectors that all appear to be compatible.

Eg. Amphenol 112419
http://www.amphenolconnex.com/media/downloads/3178/112419.pdf

(also Molex, TE Connectivity, etc.)

None of the drawings appears to indicate the electrical connectivity.

I can see the two pins at the back are the center and shell of the
BNC, but I don't see any information on the "Mounting Posts" or the
metal "Board Locks".

Are they insulated or are they connected to the BNC shell? Anyone know
for sure?

Thanks,

Best regards,
Spehro Pefhany
 
U

Uwe Hercksen

Spehro said:
Okay, there are a number of manufacturers of insulated (to the panel)
R/A BNC connectors that all appear to be compatible.

Eg. Amphenol 112419
http://www.amphenolconnex.com/media/downloads/3178/112419.pdf

(also Molex, TE Connectivity, etc.)

None of the drawings appears to indicate the electrical connectivity.

I can see the two pins at the back are the center and shell of the
BNC, but I don't see any information on the "Mounting Posts" or the
metal "Board Locks".

Are they insulated or are they connected to the BNC shell? Anyone know
for sure?
Click to expand...

Hallo,

I don't know for sure, but I measured such connectors, the mounting
posts were isolated to the shell and to each other. But I don't know if
this is true for all parts from all manufacturers.

Bye
 
S

Spehro Pefhany

Hallo,

I don't know for sure, but I measured such connectors, the mounting
posts were isolated to the shell and to each other. But I don't know if
this is true for all parts from all manufacturers.

Bye
Click to expand...

Hi, thanks, Uwe, that's a big help.

Best regards,


Best regards,
Spehro Pefhany
 
S

Spehro Pefhany

I've got a deja-vu feeling. I'm sure this was asked on this group in the
past year or two. Maybe search via GG?
Click to expand...

Hi, Glenn:-

If so, I can't find it. JL was looking for some that were
metal/grounded back in 2005 or so.

Thanks,


Best regards,
Spehro Pefhany
 
S

Spehro Pefhany

I just searched for it in GG too & could not find anything.



I grabbed an insulated RA BNC from my parts store & tested it.

Both mounting posts/pins are isolated from each other & from both the
signal & ground pin on the BNC.

ie they appear to just be pins pressed into holes in the plastic.



This is the exact part I have:

<http://www.newark.com/amphenol-rf/31-5431/rf-coaxial-bnc-bhd-jack-r-a-50/dp/73K1441>


Purchased here:
<http://australia.rs-online.com/web/p/bnc-connectors/2508698273/>



The only difference visually that I could see is that on my part the
mounting pins are solid pins, your pins appear to be the
split/captivating sheet metal style.
Click to expand...

Hi,

I'm actually probably going for a TE part with solid pins. Looks like
they're generally isolated. I'll order a few up for early next week,
but this is enough data points to provisionally assume they're
isolated.

Thanks!


Best regards,
Spehro Pefhany
 
P

Paul E Bennett

Spehro said:
Hi, all:-

Okay, there are a number of manufacturers of insulated (to the panel)
R/A BNC connectors that all appear to be compatible.

Eg. Amphenol 112419
http://www.amphenolconnex.com/media/downloads/3178/112419.pdf

(also Molex, TE Connectivity, etc.)

None of the drawings appears to indicate the electrical connectivity.

I can see the two pins at the back are the center and shell of the
BNC, but I don't see any information on the "Mounting Posts" or the
metal "Board Locks".

Are they insulated or are they connected to the BNC shell? Anyone know
for sure?

Thanks,

Best regards,
Spehro Pefhany
Click to expand...

Hi Spehro,

I had hit reply then went checking some data in my archive to provide an
authoritive answer and see you already have one. The three makes I have
dealt with all the mounting pins were isolated from the body and the body
could pass through a metal panel and remain isolated. Amphenol happened to
be one of thoise makes.

--
********************************************************************
Paul E. Bennett IEng MIET.....<email://[email protected]>
Forth based HIDECS Consultancy.............<http://www.hidecs.co.uk>
Mob: +44 (0)7811-639972
Tel: +44 (0)1235-510979
Going Forth Safely ..... EBA. www.electric-boat-association.org.uk..
********************************************************************
 
B

[email protected]

Hi, all:-



Okay, there are a number of manufacturers of insulated (to the panel)

R/A BNC connectors that all appear to be compatible.



Eg. Amphenol 112419

http://www.amphenolconnex.com/media/downloads/3178/112419.pdf



(also Molex, TE Connectivity, etc.)



None of the drawings appears to indicate the electrical connectivity.



I can see the two pins at the back are the center and shell of the

BNC, but I don't see any information on the "Mounting Posts" or the

metal "Board Locks".



Are they insulated or are they connected to the BNC shell? Anyone know

for sure?



Thanks,



Best regards,

Spehro Pefhany

--

"it's the network..." "The Journey is the reward"

[email protected] Info for manufacturers: http://www.trexon.com

Embedded software/hardware/analog Info for designers: http://www.speff.com
Click to expand...

You can look at the drawings here http://www.digikey.com/product-highlights/us/en/amphenol-bnc-isolated-pcb-receptacles/3749

They explicitly label the back pins G and S and the body pins are unlabeled, meaning they're only for mechanical support and are not connected to anything.
 
A

Adrian Tuddenham

Spehro Pefhany said:
Hi, all:-

Okay, there are a number of manufacturers of insulated (to the panel)
R/A BNC connectors that all appear to be compatible.

Eg. Amphenol 112419
http://www.amphenolconnex.com/media/downloads/3178/112419.pdf

(also Molex, TE Connectivity, etc.)

None of the drawings appears to indicate the electrical connectivity.

I can see the two pins at the back are the center and shell of the
BNC, but I don't see any information on the "Mounting Posts" or the
metal "Board Locks".

Are they insulated or are they connected to the BNC shell? Anyone know
for sure?
Click to expand...

Use a Paxolin panel and put a big tag-washer under each connector nut?
 
S

Spehro Pefhany

On Fri, 18 Oct 2013 07:03:54 -0700 (PDT),
You can look at the drawings here http://www.digikey.com/product-highlights/us/en/amphenol-bnc-isolated-pcb-receptacles/3749

They explicitly label the back pins G and S and the body pins are unlabeled, meaning they're only for mechanical support and are not connected to anything.
Click to expand...

I think so, but that's not all that convincing in itself. If you look
at this drawing of a non-isolated version:

http://drawings.amphenolrf.com/Customer_Outline/C031-5640-1010.pdf

They don't label the body pins either, but it's an all-metal
construction so they're no doubt grounded.

See photo (bottom view):
http://sigma.octopart.com/8535373/image/Amphenol-31-5640-1010.jpg


The connector guys tend to do the same thing with things like barrel
connectors. It's supposed to be obvious or something which terminals
go to what part of the switch/connector.
 
S

Spehro Pefhany

Hi, all:-

Okay, there are a number of manufacturers of insulated (to the panel)
R/A BNC connectors that all appear to be compatible.

Eg. Amphenol 112419
http://www.amphenolconnex.com/media/downloads/3178/112419.pdf

(also Molex, TE Connectivity, etc.)

None of the drawings appears to indicate the electrical connectivity.

I can see the two pins at the back are the center and shell of the
BNC, but I don't see any information on the "Mounting Posts" or the
metal "Board Locks".

Are they insulated or are they connected to the BNC shell? Anyone know
for sure?
Click to expand...

Use a Paxolin panel and put a big tag-washer under each connector nut?[/QUOTE]

The thread is plastic, so the panel isn't the issue. It's the mounting
pins.
 
B

[email protected]

[email protected] schrieb:






Hello,



but in datasheets of ICs we find pins labeled with NC (not connected)

and DNC (do not connect!), a better statement than just unlabeled pins.



Bye
Click to expand...

Maybe but they don't have accompanying notes like "Fork Pin holds connectors rigidly to P.C. Board for high temperature and mass production assembly"
 
B

[email protected]

I think so, but that's not all that convincing in itself. If you look

at this drawing of a non-isolated version:



http://drawings.amphenolrf.com/Customer_Outline/C031-5640-1010.pdf



They don't label the body pins either, but it's an all-metal

construction so they're no doubt grounded.



See photo (bottom view):

http://sigma.octopart.com/8535373/image/Amphenol-31-5640-1010.jpg





The connector guys tend to do the same thing with things like barrel

connectors. It's supposed to be obvious or something which terminals

go to what part of the switch/connector.
Click to expand...

Right, they don't seem to care about the connection there. One thing is clear and that is if you expect to maintain the connector return loss specification out to the rated frequency, then your board has to terminate the G/S connection with the characteristic impedance in lumped component, stripline, microstrip or whatever you're using. If it's a new layout, just use isolated solder pads for the shell pins on the isolated connectors.
 
M

Martin Riddle

Hi, all:-

Okay, there are a number of manufacturers of insulated (to the panel)
R/A BNC connectors that all appear to be compatible.

Eg. Amphenol 112419
http://www.amphenolconnex.com/media/downloads/3178/112419.pdf

(also Molex, TE Connectivity, etc.)

None of the drawings appears to indicate the electrical connectivity.

I can see the two pins at the back are the center and shell of the
BNC, but I don't see any information on the "Mounting Posts" or the
metal "Board Locks".

Are they insulated or are they connected to the BNC shell? Anyone know
for sure?

Thanks,

Best regards,
Spehro Pefhany
Click to expand...

We use a version of this, not sure if its the same one. It does have
pins, not the splayed pins in detail A.
I will check on monday if they are isolated.

Cheers
 
N

Nico Coesel

Spehro Pefhany said:
Hi, all:-

Okay, there are a number of manufacturers of insulated (to the panel)
R/A BNC connectors that all appear to be compatible.

Eg. Amphenol 112419
http://www.amphenolconnex.com/media/downloads/3178/112419.pdf

(also Molex, TE Connectivity, etc.)

None of the drawings appears to indicate the electrical connectivity.

I can see the two pins at the back are the center and shell of the
BNC, but I don't see any information on the "Mounting Posts" or the
metal "Board Locks".

Are they insulated or are they connected to the BNC shell? Anyone know
for sure?
Click to expand...

The ones I've used & seen so far are all insulated.
 
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