Help identifying capacitor

busman2 · 9th November 2004, 09:20 PM

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.

johnnyx · 9th November 2004, 10:37 PM

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.

busman2 · 10th November 2004, 06:32 AM

Thanks that does help I was figuring that was the value for the first number also.

busman2 · 10th November 2004, 08:28 PM

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.

johnnyx · 11th November 2004, 04:03 PM

You've done better than I do. Where did you get the info? I would find it useful.

9th November 2004, 09:20 PM	#1
busman2 diyAudio Member Join Date: Nov 2004 Location: California	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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9th November 2004, 10:37 PM	#2
johnnyx diyAudio Member Join Date: Jan 2004 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.

10th November 2004, 06:32 AM	#3
busman2 diyAudio Member Join Date: Nov 2004 Location: California	Thanks that does help I was figuring that was the value for the first number also.

10th November 2004, 08:28 PM	#4
busman2 diyAudio Member Join Date: Nov 2004 Location: California	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.

11th November 2004, 04:03 PM	#5
johnnyx diyAudio Member Join Date: Jan 2004 Location: manchester	You've done better than I do. Where did you get the info? I would find it useful.

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