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Old 9th November 2004, 10:20 PM   #1
busman2 is offline busman2  United States
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Join Date: Nov 2004
Location: California
Default Help identifying capacitor

I want to replace some smd electrolytic capacitors in a preamp I own with smd film caps, but I can't identify this cap code. Anyone what can help please respond.

capacitor code on top.
470
6A
3F6

That is all that is on these caps. They are input caps for mic preamps. I want lower noise which the film caps will give. Please help if you can.
Thanks in advance.
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Old 9th November 2004, 11:37 PM   #2
johnnyx is offline johnnyx  United Kingdom
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Location: manchester
All you can know from a surface mount electrolytic is the capacitance, 470uF in this case. The other codes are specific to the manufacturer. The working voltage is only sometimes indicated. The voltage can be estimated by physical size, in comparison to others of known value. You could compare the other codes to known ones in a similar fashion.

Surface mount ceramic caps have no markings whatsoever, so it could be worse.

Hope this helps.
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Old 10th November 2004, 07:32 AM   #3
busman2 is offline busman2  United States
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Thanks that does help I was figuring that was the value for the first number also.
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Old 10th November 2004, 09:28 PM   #4
busman2 is offline busman2  United States
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Well I identified it its a panasonic the first # is the UF rating the second (6) is the voltage and the (A) is the physical size code.
the last (3F6) is the lot#

Feels good to now be able to move farther into my project.
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Old 11th November 2004, 05:03 PM   #5
johnnyx is offline johnnyx  United Kingdom
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You've done better than I do. Where did you get the info? I would find it useful.
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