Skip to main content
Paolo Filipov
Paolo Filipov
Associate II
March 12, 2018
Question

Mistake in datasheet? (Schottky diode BAR42)

  • March 12, 2018
  • 9 replies
  • 8737 views
Posted on March 12, 2018 at 08:20

Hi everyone,

if You open AN926 Application note (pls see attached),

You will see a marking format for SOT package:

ZZZ W

Should not the year be marked? is not there a mistake in document?

I have a parts (pls see photo) from Arrow and their engineers can not answer this question.

0690X00000604Q8QAI.jpg

Best regards and thank You

Paolo Filipov.

    This topic has been closed for replies.

    9 replies

    Paolo Filipov
    Paolo FilipovAuthor
    Associate II
    March 13, 2018
    Posted on March 13, 2018 at 08:42

    Please someone help.

    Brian Kling
    Brian Kling
    Senior
    March 13, 2018
    Posted on March 13, 2018 at 09:57

    extracting77

    ‌ we are trying to identify an internal resource to help, stay tuned!

    T J
    T J
    Senior III
    March 13, 2018
    Posted on March 14, 2018 at 00:43

    I cant read the marking, what does it read ? D01 E7 ?

    E7 looks like 2015- week 7  manufacture date.

    Tesla DeLorean
    Tesla DeLorean
    Guru
    March 14, 2018
    Posted on March 14, 2018 at 01:13

    Would have taken a minute to crop and size the photo.

    0690X00000604TpQAI.jpg

    D81 E7

    Would suggest E (Week 9-10) 2017 or 2007, assume the former

    Tips, Buy me a coffee, or three.. PayPal Venmo (See Profile) Up vote any posts that you find helpful, it shows what's working..
    T J
    T J
    Senior III
    March 14, 2018
    Posted on March 14, 2018 at 01:20

    it is a very old document, factories shut down and new ones appear,

    the Laser cut TopMarks are different from every factory.

    I wouldn't worry about the markings too much, but be very concerned where you bought the part.

    I only use Arrow, Or Digikey, guaranteed to be original factory parts. not counterfeit

    however, at the bottom of that document...

    Contact information

    If you have any questions concerning matters raised in this document, please contact STMicroelectronics at the following address:

    https://community.st.com/external-link.jspa?url=http%3A%2F%2Fwww.st.com%2Fstonline%2Fdomains%2Fsupport%2Fcontact_support.htm

    Andrew Neil
    Andrew Neil
    Super User
    March 15, 2018
    Posted on March 15, 2018 at 16:39

    T J wrote:

    however, at the bottom of that document...

    Contact information

    If you have any questions concerning matters raised in this document, please contact STMicroelectronics at the following address:

    /external-link.jspa?url=http%3A%2F%2Fwww.st.com%2Fstonline%2Fdomains%2Fsupport%2Fcontact_support.htm

    Hmmm ... not useful:

    0690X00000609SxQAI.png

    Perhaps

    Kling.Brian

    ‌'s ''

    internal resource'' could also address that one ... ?

    A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
    Brian Kling
    Brian Kling
    Senior
    March 15, 2018
    Posted on March 15, 2018 at 17:22

    Actually the link provided is incorrect, should be this one: 

    http://www.st.com/content/st_com/en/support/online-support.html

    Where did you find this link? We are putting a redirect in place to the correct URL.

    Paolo Filipov
    Paolo FilipovAuthor
    Associate II
    March 14, 2018
    Posted on March 14, 2018 at 07:47

    Hi dear

    Turvey.Clive.002

    and dearT J,

    thank You a lot for your help.

    I think the same:

    it can be

    2015- week 7 and

    it can be

    (Week 9-10) 2017 or 2007

    But there should bea document where we can find the date codes. I think it's common information and most of

    manufacturers publish it.

    And there isthe document (attached in my 1st message), yes it's old (2008) but I can not find another one. Therefore I ask ST engineers to help me.

    Regards.

    Sisto Zànier
    Sisto Zànier
    Senior
    March 15, 2018
    Posted on March 15, 2018 at 16:12

    Look attached image:

    0690X00000604U4QAI.jpg

    maybe useful this codebook?

    ________________

    Attachments :

    smd-codebook.pdf : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HxtF&d=%2Fa%2F0X0000000b1t%2FwvqqpAuxSEB1vNE1_5tpr90RtdBZWFHj9BgG87O5EHc&asPdf=false
    Brian Kling
    Brian Kling
    Senior
    March 15, 2018
    Posted on March 15, 2018 at 16:48

    Update: our support team is reaching out directly to

    extracting77

    ‌ on this question.

    Douglas MILLER
    Douglas MILLER
    ST Employee
    March 21, 2018
    Posted on March 21, 2018 at 13:45

    Support incident created, have contacted customer and will work with them until resolved.

    Paolo Filipov
    Paolo FilipovAuthor
    Associate II
    May 29, 2018
    Posted on May 29, 2018 at 12:44

    Hi,

    Can anyone answer this question?

    E (Week 9-10) 2017 or 2007?
    Francesco CARIATI
    Francesco CARIATI
    Visitor II
    May 29, 2018
    Posted on May 29, 2018 at 15:47

    Hi Paolo,

    did you receive the reply from STfrom our Support Team?

    c.c.

    Miller.Douglas

    ‌

    Paolo Filipov
    Paolo FilipovAuthor
    Associate II
    May 30, 2018
    Posted on May 30, 2018 at 08:40

    Hi dear

    Cariati.Francesco

    ,

    I don't have full answer about the date code.

    It's not adifficult question.

    Terms & ConditionsAccessibility statement