+80, -20 - this is used with electrolytic capacitors where the minimum value is the major issue.
#CAPACITOR CODE CHART .011 TO .047 CODE#
The code used is actually the same as that used with resistors as it utilises the EIA scheme: EIA Tolerance Capacitor Marking Code. (I know the PCB came from '90, then the year is 1997). Tolerance codes: Some capacitors have a tolerance code. The capacitor Matsuo 553 with date code "M" was Letter could be marked with a cross bar above it. Read as an upper-case letter, for example, v for V, the lower-case If there is a possibility that a single lower-case letter could be N.B.: The letters "O","o", "I" and "i" are omitted to avoid ambiguity.įor the same reason, IEC-60062 stated that: IEC-60062: Table 12 – One-character code – 4-year cycle This coding standard is defined according to Japanese Industrial Standard JISĥ101, table 12 (as stated in the datasheet linked by davidcary) and in the Corresponding International Standards IEC 60384-1:2008 that refers, for the coding method, to IEC-60062, section 6.3.1 – Four-year cycle (small components, SM and THM only). The Jaro date code looks like it might be exactly the same as the Matsuo date code. (Since you had it in your hands June 2016 we can rule out any later years). The capacitor you have with date code "M" was apparently manufactured in December in one of the years 1997, 2001, 2005, 2009, or 2013. The 12 lowercase letters n through z (minus "o") represent the 12 months Jan through December for one of the years 2000, 2004, 2008, 2012, 2016, 2020.
The 12 lowercase letters a through m (minus "i") represent the 12 months Jan through December for one of the years 1999, 2003, 2007, 2011, 2015, 2019. The 12 uppercase letters N through Z (minus "O") represent the 12 months Jan through December for one of the years 1998, 2002, 2006, 2010, 2014, 2018. The 12 uppercase letters A through M (minus "I") represent the 12 months Jan through December for one of the years 1997, 2001, 2005, 2009, 2013, 2017. Matsuo Tantalum Solid Electrolytic Capacitors datasheet. The Matsuo date code is explained in more detail in their other datasheets,