Feed through capacitors...

ATUs, PSUs, Rotators, Test Equipment, components, etc
Post Reply
User avatar
VK2XV
Frequent Poster
Posts: 150
Joined: Sat Mar 02, 2013 11:50 am

Feed through capacitors...

Post by VK2XV »

Looking for feed through caps (bulkhead) about 1000pF.

They seem to be fairly expensive at around $6 - $12 ea on eBay (plus postage).

Farnell/Element14 have them for about $9 for Qty 10 (plus $12 postage).

Any cheaper sources ?
Steve VK2XV/VK2ZTO
North Richmond, NSW QF56ik
http://www.joataman.net
You are truly knowledgeable when you know what you don't know...
ZL2WHO
Frequent Poster
Posts: 199
Joined: Mon Dec 28, 2009 6:10 am
Location: Palmerston North En Zed
Contact:

Re: Feed through capacitors...

Post by ZL2WHO »

I have some tucked away in the workshop, If your not after big Qtys. id be happy to send you some.

Mark.
User avatar
VK2XV
Frequent Poster
Posts: 150
Joined: Sat Mar 02, 2013 11:50 am

Re: Feed through capacitors...

Post by VK2XV »

ZL2WHO wrote:I have some tucked away in the workshop, If your not after big Qtys. id be happy to send you some.
Thanks Mark. I need just one ASAP and so I have bitten the bullet and ordered a couple from EL14 (delivered tomorrow).

But thanks for the offer.

Still curious to know if there is a cheaper source somewhere...
Steve VK2XV/VK2ZTO
North Richmond, NSW QF56ik
http://www.joataman.net
You are truly knowledgeable when you know what you don't know...
VK4TI
Forum Diehard
Posts: 708
Joined: Wed Dec 19, 2012 6:25 am

Re: Feed through capacitors...

Post by VK4TI »

""
Still curious to know if there is a cheaper source somewhere..
.""


I got mine from a solar shop that went broke ages ago , very cheap then
VK2JDH

Re: Feed through capacitors...

Post by VK2JDH »

VK2XV wrote:Looking for feed through caps (bulkhead) about 1000pF.

They seem to be fairly expensive at around $6 - $12 ea on eBay (plus postage).

Farnell/Element14 have them for about $9 for Qty 10 (plus $12 postage).

Any cheaper sources ?
Rocky have some, but not at the value are wanting.

https://www.rockby.com.au/SearchresSql_ ... chkey=feed
User avatar
VK2XV
Frequent Poster
Posts: 150
Joined: Sat Mar 02, 2013 11:50 am

Re: Feed through capacitors...

Post by VK2XV »

Thanks all.

This is the type of FT cap I am interested in...
42415385.jpg
42415385.jpg (3.11 KiB) Viewed 1946 times
I see these used for power supply feed pins for RF preamplifiers and the like.

Given the price of those little ceramic feedthrough caps maybe $8 or so is about it for this type...
Steve VK2XV/VK2ZTO
North Richmond, NSW QF56ik
http://www.joataman.net
You are truly knowledgeable when you know what you don't know...
ZL2WHO
Frequent Poster
Posts: 199
Joined: Mon Dec 28, 2009 6:10 am
Location: Palmerston North En Zed
Contact:

Re: Feed through capacitors...

Post by ZL2WHO »

10x for about $9... Cheap as Chups mate. Seller also has others listed.
eBay item number:
Copy and paste into ebay search. 281423864069
User avatar
VK2XV
Frequent Poster
Posts: 150
Joined: Sat Mar 02, 2013 11:50 am

Re: Feed through capacitors...

Post by VK2XV »

ZL2WHO wrote:10x for about $9...
Thanks Mark - I grabbed a 10x lot. Doesn't look like they come with nuts - hopefully I can squirrel out ones that fit...
Steve VK2XV/VK2ZTO
North Richmond, NSW QF56ik
http://www.joataman.net
You are truly knowledgeable when you know what you don't know...
User avatar
VK3ALB
Forum Diehard
Posts: 1211
Joined: Sat Dec 22, 2007 3:56 am
Location: Geelong

Re: Feed through capacitors...

Post by VK3ALB »

VK2XV wrote: Thanks Mark - I grabbed a 10x lot. Doesn't look like they come with nuts - hopefully I can squirrel out ones that fit...
You could always solder them to the shield
Lou - VK3ALB

Being right doesn't excuse bad behaviour
User avatar
VK2XV
Frequent Poster
Posts: 150
Joined: Sat Mar 02, 2013 11:50 am

Re: Feed through capacitors...

Post by VK2XV »

VK3ALB wrote:You could always solder them to the shield
Could do for internal stuff - but I want to use them as power feeds into an aluminium die-cast box.
Steve VK2XV/VK2ZTO
North Richmond, NSW QF56ik
http://www.joataman.net
You are truly knowledgeable when you know what you don't know...
VK3BJM

Re: Feed through capacitors...

Post by VK3BJM »

Steve,

I've just checked one that I have - it has a 1/4 inch 28 TPI thread, which is a common UNF thread size. Any decent tool or bolt shop should have - or be able to get for you - a tap at that size. Then you can tap the die-cast box and screw them in, good and proper. You'll need a 5.5 mm drill bit for the hole to be tapped - even Bunnings will have these... :P

And to remove any uncertainty, take it into the decent tool or bolt shop and get them to confirm the thread size (if you don't happen to have a thread gauge yourself, of course).

73,
Barry
VK3BJM
VK2JDH

Re: Feed through capacitors...

Post by VK2JDH »

VK3BJM wrote: And to remove any uncertainty, take it into the decent tool or bolt shop and get them to confirm the thread size (if you don't happen to have a thread gauge yourself, of course).

73,
Barry
VK3BJM
Bunnings have male and female thread gauges in their bolt isle
User avatar
VK2XV
Frequent Poster
Posts: 150
Joined: Sat Mar 02, 2013 11:50 am

Re: Feed through capacitors...

Post by VK2XV »

Thanks - I have a tap and die set. I'll see what's what when they arrive.
Steve VK2XV/VK2ZTO
North Richmond, NSW QF56ik
http://www.joataman.net
You are truly knowledgeable when you know what you don't know...
Post Reply