4 lead capacitor

philpoole · 26th February 2008, 09:23 PM

I've just bought a load of BHC caps off of Ebay, and very nice they are too.
But, they have 4 leads.
What is the pinout for 4 legged capacitors? Is one of them -ve, the remainder +ve?

Cheers,
Phil

meanman1964 · 27th February 2008, 06:50 AM

1= positive(+)
5= negative(-)
2 and 3= nothing(for solid connection on the board)

pooge · 27th February 2008, 07:52 AM

2 input leads, 2 output leads

check their website for terminal location.

got any to spare?

meanman1964 · 27th February 2008, 08:49 AM

Quote:

Originally posted by pooge
2 input leads, 2 output leads

check their website for terminal location.

got any to spare?

I've got the same caps and you don't need pin2 and 3 it's only for secure connection.

pooge · 27th February 2008, 09:03 AM

Well, it depends on which model you are talking about. If it is the 4 terminal series like the following, they are not just supports:

http://www.bhc.co.uk/pdf/aln20s.pdf

meanman1964 · 27th February 2008, 09:55 AM

Phil,do you've a pic of the capacitor or can you give the exact numbers?

philpoole · 27th February 2008, 10:46 AM

Hi,
I'll try and sort out a photo later on.
It does indicate that pin 2 should be negative (although pin 2 appeared ambiguous last time I looked), so I assume the others are either all positive, or just one, and the remaining two are support.
BTW meanman,
"1= positive(+)
5= negative(-)
2 and 3= nothing(for solid connection on the board)"
Did you mean 4=negative?

Thanks for all the replies. I don't think its anything like pooge suggested, but I could well be wrong.

Its a 4100uF 70V electrolytic, and its blue

Cheers,
Phil

philpoole · 27th February 2008, 12:17 PM

Here's the picture of them used on Ebay, if it helps.
I'll take a more sensible picture tonight.

meanman1964 · 27th February 2008, 12:27 PM

When you look at the pins are there no numbers stamped in?

philpoole · 27th February 2008, 12:47 PM

Yes there are numbers, but if I recall, it quotes one of them as negative, and the rest are not described.
Anyway, they look like they're maybe ALP10A caps, so I'll see if I can find the datasheet.

26th February 2008, 09:23 PM	#1
philpoole diyAudio Member Join Date: Oct 2004	4 lead capacitor I've just bought a load of BHC caps off of Ebay, and very nice they are too. But, they have 4 leads. What is the pinout for 4 legged capacitors? Is one of them -ve, the remainder +ve? Cheers, Phil

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27th February 2008, 06:50 AM	#2
meanman1964 diyAudio Member Join Date: Oct 2006 Location: Belgium the land of chocolate	1= positive(+) 5= negative(-) 2 and 3= nothing(for solid connection on the board)

27th February 2008, 07:52 AM	#3
pooge diyAudio Member Join Date: May 2003 Location: Northern Va.	2 input leads, 2 output leads check their website for terminal location. got any to spare?

27th February 2008, 09:03 AM	#5
pooge diyAudio Member Join Date: May 2003 Location: Northern Va.	Well, it depends on which model you are talking about. If it is the 4 terminal series like the following, they are not just supports: http://www.bhc.co.uk/pdf/aln20s.pdf

27th February 2008, 09:55 AM	#6
meanman1964 diyAudio Member Join Date: Oct 2006 Location: Belgium the land of chocolate	Phil,do you've a pic of the capacitor or can you give the exact numbers?

27th February 2008, 10:46 AM	#7
philpoole diyAudio Member Join Date: Oct 2004	Hi, I'll try and sort out a photo later on. It does indicate that pin 2 should be negative (although pin 2 appeared ambiguous last time I looked), so I assume the others are either all positive, or just one, and the remaining two are support. BTW meanman, "1= positive(+) 5= negative(-) 2 and 3= nothing(for solid connection on the board)" Did you mean 4=negative? Thanks for all the replies. I don't think its anything like pooge suggested, but I could well be wrong. Its a 4100uF 70V electrolytic, and its blue Cheers, Phil

27th February 2008, 12:27 PM	#9
meanman1964 diyAudio Member Join Date: Oct 2006 Location: Belgium the land of chocolate	When you look at the pins are there no numbers stamped in?

27th February 2008, 12:47 PM	#10
philpoole diyAudio Member Join Date: Oct 2004	Yes there are numbers, but if I recall, it quotes one of them as negative, and the rest are not described. Anyway, they look like they're maybe ALP10A caps, so I'll see if I can find the datasheet.