PC1A-24V Datasheet, PDF (1/1 Pages) Panasonic Semiconductor – How to read the date code on a relay

How to read the date code on a relay
Introduction:
Date code / lot number is the number to identify when the component is being manufactured. It is for the factories
production quality control and tracing purposes.
Date code:
There are 3 different date code format on our relays:
1) Three digit code: The first digit represents the year and the remaining two digits represent the week number in a
calendar year, e.g. 451 means week 51 of year 2004.
2) Four digit code: The first two digits represent the year and the remaining two digits represent the week number in
a calendar year, e.g. 0451 means week 51 of year 2004.
3) Five digits code: The first digit represents the year. The second two digits represent the month and the remaining
two digits represent the day, e.g. 41201 means Dec. 1, 2004
Factory code:
A letter following the date code identifies factory location.
Examples:
US Part No: TK1-5V
Date code: 70313 – the relay was
made on March 13^th 2007.
Factory code: B – Japan factory
(internal use only).
US Part No: AQV412EH
Date code: 431 – 31^st week,
2004.
Factory code: Blank – Japan
factory (internal use only).
US Part No: S2EB-5V
Date code: 40113 – January
13^th 2004.
Factory code: Blank – Japan
factory (internal use only).
Release date: 12/2007