How to identify this capacitor
David
longer has any contacts coming out of it so I need a new one but I have no
idea what the markings on it mean here is what it has:
102
330
6E
Can anyone help me find a replacement?
ånønÿmøu§
>102
this marking could mean: 0.001ufd
>330
this marking could mean: 33pfd or 330pfd
>6E
>
>Can anyone help me find a replacement?
>
Michael A. Terrell
>
> On Tue, 11 Mar 2003 06:50:04 GMT, "David" <a...@a.com> Gave us:
> but that seems odd. I have never seen voltage declared with a
> multiplier, but I suppose it could mean 33 Volts. If it was a ceramic
> cap, 33 sounds right. If it is an electrolytic, I suppose the high
> 330 volt could be correct, but it is very unlikely.
Have you EVER SEEN a 1000 pF electrolytic?
--
Michael A. Terrell
Central Florida
Gary Lecomte
I would be quite sure it is a .001 Disk Cap. The 330 is probably a batch code!
Take care....Gary
Michael A. Terrell
>
> On Tue, 11 Mar 2003 15:41:59 GMT, "Michael A. Terrell"
> <mike.t...@earthlink.net> Gave us:
>
>>DarkMatter wrote:
>>>
>>> On Tue, 11 Mar 2003 06:50:04 GMT, "David" <a...@a.com> Gave us:
>>>
>>>>I have a video card that had a capacitor knocked off it. The capcitor no
>>>>longer has any contacts coming out of it so I need a new one but I have no
>>>>idea what the markings on it mean here is what it has:
>>>>
>>>>102
>>>>330
>>>>6E
>>>>
>>>>Can anyone help me find a replacement?
>>>>
>>> It is a 1000 pF cap. or 0.001 uF at what appears to be 330 volts,
>>> but that seems odd. I have never seen voltage declared with a
>>> multiplier, but I suppose it could mean 33 Volts. If it was a ceramic
>>> cap, 33 sounds right.
I have used 6,000 volt ceramic caps
>>> If it is an electrolytic, I suppose the high
>>> 330 volt could be correct, but it is very unlikely.
>>
>> Have you EVER SEEN a 1000 pF electrolytic?
>
> Actually, no.
>
> Have you ever seen a voltage designated with a multiplier digit?
No, that was your idea, too. 330 VAC caps are made. They are used
for motor start/run electrolytic capacitors, and < 1µF for part of a
power line filter circuit using X or Y type caps.
From Goggle:
Searched the web for 330v capacitor.
Results 1 - 10 of about 368. Search took 0.13 seconds
The OP said it was for a video card so it should be a 1000 pF (.001
µF) ceramic 50 v, or possibly one of the plastic dielectric type
capacitors.
Michael A. Terrell
David, do you have a good digital camera or a flatbed scanner to take
a picture? Then you can post it to
news:alt.binaries.schematics.electronic by attaching it as a GIF, JPEG,
or other common image file. As they say, "A picture is worth a thousand
words"
The damaged capacitor is probably a common 1000 pF (.001 µF) 50 Volt
ceramic capacitor, but it wouldn't hurt to see what it looks like.
Edward Rosten
> David, do you have a good digital camera or a flatbed scanner to take
> a picture? Then you can post it to
> news:alt.binaries.schematics.electronic by attaching it as a GIF, JPEG,
> or other common image file. As they say, "A picture is worth a thousand
> words"
These days, posting a link to the picture on the web is probably a better bet.
Not all newsfeeds carry binary groups.
-Ed
David
metal kept reflecting the flash and it kept coming up black, hope this helps
identify it.
Joey
Maybe the 102 is 100volts and the 330 is 33microfarads
David
interpretations?! I posted some pictures up on www.megor.com if seeing the
capacitor helps...
"Joey" <res0...@verizon.net> wrote in message
news:9e6e1236.0303...@posting.google.com...
John Fields
>How do you people ever identify parts if there are so many different
>interpretations?! I posted some pictures up on www.megor.com if seeing the
>capacitor helps...
---
Well, it's clearly an electrolytic because of the black half-moon
indicating the negative terminal.
So...
102
330
6E
It could be 1000湩 at 33V and who knows what 6E means or 1000湩 at 6V
and who knows what 330 means, or 33湩 at 6V and who knows what 102
means or...
Not knowing what the circuit around it looks like, but since 5V is a
favorite for logic stuff and it's physically a pretty small cap, I
vote for 1000湩 at 6V.
But... even though the leads got knocked off, you can still see what's
left of them, no? If you can then we can run some tests and find out
what's what. Interested?
--
John Fields
Professional circuit designer
http://austininstruments.com
Lewin A.R.W. Edwards
> interpretations?! I posted some pictures up on www.megor.com if seeing the
By the way, the answer to THIS question is that surface-mount
components are frequently very hard to identify, because you're not
ever meant to have to identify them by eye. The manufacturer ships
them in a big reel. The reel is labeled fully. The reel is fed into a
pick-n-place machine and the parts are squished onto the board.
Many SMD passives aren't marked at all.
Matt Mets
news:avt67vg0beojjkg39...@4ax.com...
> On 15 Mar 2003 09:16:26 -0800, la...@larwe.com (Lewin A.R.W. Edwards)
> Gave us:
> there is space to do so. That would mean anything at 0805 or bigger.
> They ARE meant to be identifiable OUTSIDE their tape and reel
> packaging.
>
> That is a ludicrous statement you made.
>
We use 0603 SMC caps for some boards we are making, and they dont
come marked... supposidly they dont come marked in the 0805 versions
either unless you pay more for them. Not sure if this is normal or not, but
that is my experiance...
> They are more cryptically marked, but most are marked nonetheless.
>
> This particular cap is marked in a non standard way. That means
> that the manufacturer has a coding table on their web site that allows
> the engineer or technician to identify their components.
>
> Even small chip capacitors have markings on them. There is usually
> a letter followed by a number for multiplication.
>
> An "A4" is a 104, which is a 0.1 uF cap. A close inspection of the
> cap will show those codings.
>
> Your statement proves you to be merely guessing.
>
> " because you're not ever meant to have to identify them by eye"
>
> Yeah right! Sure. Get a clue.
It seems logical to me that you arent supposed to be able to identify the
parts that fall off of commercial parts; not being able to tell what part
values
are makes it harder to reverse engineer things. Besides, what video card
manufacturer wants you to be playing with their boards?
Peter Bennett
<DarkM...@thebarattheendoftheuniverse.org> wrote:
>On 15 Mar 2003 09:16:26 -0800, la...@larwe.com (Lewin A.R.W. Edwards)
>Gave us:
>
> Yer an idiot. Nearly all surface mount components are marked when
>there is space to do so. That would mean anything at 0805 or bigger.
>They ARE meant to be identifiable OUTSIDE their tape and reel
>packaging.
>
In my experience, when I first dealt with surface mount, 1206 size
ceramic capacitors were unmarked, but 1206 resistors were marked with
a three or four digit code similar to the colour code (but with digits
instead of colour bands).
More recently, capacitors have been marked with a "cryptic" two
character alpha-numeric code. (It's not really cryptic, if you have
the secret decoder ring :-) )
--
Peter Bennett, VE7CEI
new newsgroup users info : http://vancouver-webpages.com/nnq
GPS and NMEA info: http://vancouver-webpages.com/peter
Vancouver Power Squadron: http://vancouver-webpages.com/van-ps
David
> character alpha-numeric code. (It's not really cryptic, if you have
> the secret decoder ring :-) )
I bought a crackerjack box, but the toy was a whistle...
Lewin A.R.W. Edwards
> > >components are frequently very hard to identify, because you're not
> > >ever meant to have to identify them by eye. The manufacturer ships
> >
Yer a loudmouthed fool whose postings don't make it onto google, yer
parrot-shouldered cabin boy o' a rum-soaked pirate. SMD inductors and
chip capacitors are rarely marked at all, unless there is maybe some
UV-fluorescent legend on them. Tantalums, yes. Electros, yes.
Transistors and diodes, usually marked - but the markings can be
non-unique and it may not be possible to guaranteeably identify a
transistor or a very small transistor-sized package.
I repeat my assertion that hand-rework and hand-assembly was not a
consideration with these components.
I also repeat my assertion that you're a loudmouthed fool. *plonk*
~^Johnny^~
>I posted two pictures at www.megor.com, the pictures are not very good, the
>metal kept reflecting the flash and it kept coming up black, hope this helps
>identify it.
>"Michael A. Terrell" <mike.t...@earthlink.net> wrote in message
>news:3E6EA798...@earthlink.net...
>> David wrote:
>> >
>> > I have a video card that had a capacitor knocked off it. The capcitor
>no
>> > longer has any contacts coming out of it so I need a new one but I have
>no
>> > idea what the markings on it mean here is what it has:
>> >
>> > 102
>> > 330
>> > 6E
>> >
>> > Can anyone help me find a replacement?
>>
330uf, 50v surface mount aluminum electrolytic (no leads on a
surface mount device!)
You should be able to verify the capacitance with a cheap DMM - most
modern $40.00 DMMs have built-in capacitor meters and transistor
checkers these days.
The "6E" I wouldn't worry about too much, although, in cases where a
letter is used for working voltage, "E" either means 2.5 volts or 50
volts - and I doubt a cap this size is 2.5 volts, unless it is around
a farad or more in capacitance.
Many of these caps are designed to take quite a high ripple current,
and can run quite hot in-circuit, due to the high current and the
moderately high ESR of these caps. If you need to replace it, be
sure to find one with the highest current rating you can find. On
Video cards and modems, they may be bypassing a lot of RF.
I came up with 330 uf for two reasons:
I) Most values are literal, when less than 100 uf, then
consist of two digits and a multiplier for values of 100uf
and up E.g.: 68 = 68uf ; 33 = 33uf ; 330 = 330 uf
It makes since, really: for 4.7uf, "47" takes less
space than "4R7"
II) The physical size is similar to other caps I have seen on various
ISA and PCI cards, and that's about the right density for
330uf at 50v
--
-john
~~~~~~
"Smith did such an impressive job you expected Twain
to give her the hook at any moment"
-Larry Pynn, Vancouver Sun.
http://www.bobbi-smith.com/
~~~~~~