SMD Device Marking Code

[davidge]

Does anyone know what is the device that has marking "LAC" on it? It is SOT23-5 package.

Thanks,
David

 

[OLIVE2222]

Hi,

looks to be a 2V5 LDO from Analog devices:

http://www.analog.com/static/imported-files/data_sheets_obsolete/35145977ADP3308.pdf

cheers,
Olivier

 

[(*steve*)]

My information suggests is could also be an RP171N591B (5.9V 150mA)

http://www.dz863.com/datasheet-8205207663-RP171N591B_150ma-10v-Input-Ldo-Regulator/

or even an XC6219A432MR, which is a 4.3V 240mA reg. It's also on an sot-25 package which appears to be similar...

Since they're all LDO regulators, you can probably get a good indication of which is the most likely from the input voltage. ...And from the way they are connected in the circuit.

 

[OLIVE2222]

Hi,


The RP171N591B as a 5 digits marking. LAC + 2 digit for the lot number
The XC6219A432MR as a 4 digits marking.1 L digit marking for the product serie + 2 digits for the voltage + 1 digit for the lot number.

cheers,
Olivier

 

[(*steve*)]

Your information sounds better than mine

What is your source?

 

[OLIVE2222]

HI Steve,

here we go!

for the RP171N591B
http://www.ricoh.com/LSI/product_power/mark/ME-RP171N.pdf

and for the XC6219A432MR
http://www.armdesigner.com/xsms/html37/uploadfile/20090716144707302.pdf page20

cheers,
Olivier

 

[(*steve*)]

No, what I meant was, what is your source for the cross-reference information between case markings and devices?

 

[OLIVE2222]

Steve,

misunderstanding on my side. In fact I just Google it. With LAC SOT23 query it's the second result. I find this is better than dedicated tools as it also drill inside datasheets and it's more up to date. But at the end you find more candidates than me !

Olivier

 

[(*steve*)]

I should add that to the sticky thread!

Thanks

 

[OLIVE2222]

Sure, it will help to promote this Californian start up company

 

[steve1418]

LAC - 芯片丝印反查 - 芯片丝印反查网

芯片丝印反查网

www.smdmark.com

The marking codes database cross reference search.

A searchable database of electronics SMD components marking codes - markingcodes.

markingcodes.com

some markingcodes book search