PANASONIC-JC1A1BJ-TM-B-DC48V

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

:

S2EB-5V  

Date code

:

40113

– January  

13

th

2004.  

Factory code

: Blank – Japan  

factory (internal use only).  

US Part No

:

TK1-5V  

US Part No

:

AQV412EH  

Date code

:

431

– 31

st

week,  

2004.  

Factory code

: Blank – Japan  

factory (internal use only).  

Date code

:

70313

– the relay was  

made on March 13

th

2007.  

Factory code

:

B

– Japan factory  

(internal use only).  

Release date: 12/2007