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SMD top code graphics and other symbols

Other than hyphen is it only letters and numbers only for the type code? If some extended graphics symbol then is it date code or makers code or something other than type designation.?

Faced with 4 symbols SO23 top code of 1F*1 , in a line no spaces, where * is like the ASCII 172 , NOT symbol , but inverted so the barb points up. From the schematic this is a BC847B which agrees with the 1F part in a general SMD code table. Looking at about 100 of the SMD code pages no reference to symbols other than hyphen

Reply to
N_Cook
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is

The next two characters should be Year and Month. I'd be curious how old the other components are, and when the unit was assembled. The Tintin hairdo you describe may refer to 2010, or some other year since the SMD codebooks were written. Or is it possible that the character was broken due to a problem during stamping?

Reply to
spamtrap1888

is

The next two characters should be Year and Month. I'd be curious how old the other components are, and when the unit was assembled. The Tintin hairdo you describe may refer to 2010, or some other year since the SMD codebooks were written. Or is it possible that the character was broken due to a problem during stamping?

++++++

Probably year 2001 from other datecodes Definitely that grcphics symbol as described, very clear under x30 mag and appropriate lighting. I have seen ( or ) , parenthesis symbol, on some other SMD but probably not posistion 1,2, or3

Reply to
N_Cook

Perhaps its logical TRUE symbol as it is inverted NOT

Reply to
N_Cook

Just to confirm , should it be marked by moveable type, it is not a 1 symbol tipped on its side, 2 straight lines at right angles

Reply to
N_Cook

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