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Old 10-11-2021, 02:20 PM   #1
AleXis6
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Default Manufacturing Date of Electrolytic capcitor

Guys. could you help me please to decode some codes of main capacitor's producers.
I would like to know the manufacturing date.

Based on the information from capacitors I have - it seems easy to decode manufacturing date for Rubycon, Nichicon.

If I understood correctly:
1. Nichicons marks date of production as (see the attached pictures) H2116
I don't understand the meaning of first letter - may be it is code of factory.
21 -year
16 week
I bought this capacitor recently.


another one-



2. Rubycon - 3M2021,
I do not have idea for 3M
20 -Year
21- week
I bought this capacitor in the middle of 2021


3. Panasonic
I bought this capacitor recently from a wholesaller.
the code is 0612TN
I hope it was in 2020 June





4. I have no idea for Hitachi
I bought this capacitor recently from a wholesaller.



sinilar 15 years old capacitor HITACHI HP3 has code 53 A6
so maybe August 2020 for new one and March 2005 for old.
5. Nippon - is to difficult

even with this manual below it is not clear. 0 -is a Year - it might be 2000, 2010, 2020 ?
but it was in December :-)
I do not remember the date of purchace, so the optimistic mfg date - December 2020

Last edited by AleXis6; 10-11-2021 at 02:43 PM..
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Old 10-11-2021, 02:27 PM   #2
RJARRRPCGP
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Default Re: Manufacturing Date of Electrolytic capcitor

The AICtech caps, look like 1982, in American date format. We, over here, have been used to using WWYY instead of the internationally-known YYWW order.
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Last edited by RJARRRPCGP; 10-11-2021 at 02:29 PM..
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Old 01-14-2022, 12:53 PM   #3
AleXis6
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Default Re: Manufacturing Date of Electrolytic capcitor

Somebosy at this forum advised me to buy capacitors from digikey.
It is very far from me but I did an order and now can not understand is Digikey sold me >8 yers old capacitors? or May be Nichicon changed the date coding?
these 2 series have codes B1339 and B1343.
It seems them from 2013 like from Aliexpress :-) several others Nichicons also not very fresh (2018, 2019), but all ordered Rubycon from 2021.



Last edited by AleXis6; 01-14-2022 at 12:57 PM..
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