TO252, 3 lines:
ST CHN K922 LD33B
What is it?
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******************************************************************On Fri, 15 Aug 2008 01:35:50 -0400, Sergey Kubushin put finger to keyboard and composed:
Just a WAG, but could it be a low dropout 3.3V regulator?
- Franc Zabkar
-- Please remove one \'i\' from my address when replying by email.
It might be anything at all... I _HATE_ that practice of cryptic marking. I can understand that e.g. SOT-23 doesn't have enough space to put the full part number but TO252 is big enough to host a small poem.
-- ****************************************************************** * KSI@home KOI8 Net < > The impossible we do immediately. * * Las Vegas NV, USA < > Miracles require 24-hour notice. * ****************************************************************** ** Posted from http://www.teranews.com **
On Fri, 15 Aug 2008 13:12:04 -0400, Sergey Kubushin put finger to keyboard and composed:
So this part is not out of some equipment that you are repairing?
I believe it could be an LD1117BDT33TR LDO 3.3V regulator:
Maybe 13 characters is a little too much for one stanza. ;-)
Some evidence in regard to the marking ...
Analog Marking Information LD33 MIC5206-3.3BM5 150mA Low-Noise LDO Regulator Fixed output
ST LD33
+3.3V voltage regulatorLD1117V33(MARKING:LD33V)
Search for LD33B and you will see ...
ld33b Description Mfr Date Code Qty Country LD33B -- ST MICRO LOT: K922 300 US
- Franc Zabkar
-- Please remove one \'i\' from my address when replying by email.
No. I simply got several tubes of those as a part of a big lot.
Yep, it is possible...
Eh, this is a biggest mystery :) They are selling a part exactly like mine and there is no part No. either...
Thank you anyways, I'll try to burn one... However it doesn't look exactly right to me because TO252 LD1117 parts from ST have "D" for package code, not "B"...
-- ****************************************************************** * KSI@home KOI8 Net < > The impossible we do immediately. * * Las Vegas NV, USA < > Miracles require 24-hour notice. * ****************************************************************** ** Posted from http://www.teranews.com **
On Fri, 15 Aug 2008 20:14:28 -0400, Sergey Kubushin put finger to keyboard and composed:
See page 3 of the datasheet. Then search for LD33A, LD33B, and LD33D at usbid.com.
The part number pattern seems pretty convincing to me.
- Franc Zabkar
-- Please remove one \'i\' from my address when replying by email.
ly
,Sorry to thread hijack - we've made some changes to the DatasheetArchive to allow fulltext searching of all datasheets. It enables engineers to find a part number from a basic spec and manufacturer name.
Let me know what you think of this feature. Its new, looking for some feedback.
Chris
On Sat, 16 Aug 2008 02:41:24 -0700 (PDT), snipped-for-privacy@datasheetarchive.com put finger to keyboard and composed:
First let me thank you for a valuable resource. However, I really miss your old wildcard search. Nowadays you can only search for "part*" whereas before you could search for anything containing "part". This severely hampers searches for ST MOSFETs, for example. These devices usually drop the ST prefix which now makes them impossible to find in your database.
One other gripe is that there is no contact information on your web site which explains why you've come here for feedback. Thirdly, I would like some way of contributing my own datasheets to your database, or at least inform you of their existence. And how about a "most wanted" feature so that users could help each other?
- Franc Zabkar
-- Please remove one \'i\' from my address when replying by email.
Thanks Franc
The full widcard search was removed only whilst we see how the new indexing engine copes. part* requires far less processor power than
*part*. We have indexed millions of documents so this slows the server down significantly.I've enabled it on the first keyword now so you can dow *part* (only in the first search search keyword though). This feature will be slow because of the volume of data it searches.
Anyhow, thanks for the feedback. I'm looking into the other points you raised. I can easily add a contact us page to start with.
Regards
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