LM7321: LM7321 SOT-23 package RθJA test condition

Dong Ba

Part Number: LM7321

Hi Team,

Please help to provide the detailed RθJA test condition of LM7321 SOT-23 package (Air: still or moving, PCB:1s or 2s2p).

B.R.

Eric Ba

over 3 years ago

0 Ron Michallick over 3 years ago

TI__Guru**** 154306 points

Hello Eric,

Have you read the document linked in the thermal table notes?

https://www.ti.com/lit/pdf/spra953

On page 2, The package- and test-board system is placed in either a still air (RθJA) or moving air (RθJMA)
environment.

0 Dong Ba over 3 years ago in reply to Ron Michallick

TI__Intellectual 885 points

Hi Ron,

Thanks for the feedback.

Yes, I read this, how about the PCB test condition PCB:1s or 2s2p?

0 Ron Michallick over 3 years ago in reply to Dong Ba

TI__Guru**** 154306 points

Eric,

I do not have access to the EIA/JESD51 standard. My simple web search did reveal snippets of text that consistently said 2 signal layers and a power and ground layers. So it is my opinion that it is 2s2p which you probably suspected also.

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LM7321: LM7321 SOT-23 package RθJA test condition