LM2901: Lead Frame

Kengo.Y

Part Number: LM2901

Hi team,

My customer checked XRAY for LM2901PWR.
The lead frame was different depending on the device.
Is this a normal product?

Sincerely.
Kengo.

over 4 years ago

0 Joe Vanacore over 4 years ago

TI__Mastermind 20290 points

Hi Kengo,

Thank you for your question. I will look into this and provide you an update no later than the end of business Monday.

Best Regards,

Joe

Applications Engineer

Linear Amplifiers Business Unit | Comparators Product Line (CMPS)

All information in this correspondence and in any related correspondence is provided “as is” and “with all faults”, and is subject to TI’s Important Notice (http://www.ti.com/corp/docs/legal/important-notice.shtml)

+1 Paul Grohe over 4 years ago

TI__Guru 69756 points

Hello Kengo,

Yes, there can be different lead frames within the same product due to differing assembly sites. High volume devices such as this device are built at multiple sites or subcons.

However, in this case, these are actually slightly different lead plating (same die, though).

Note that the top picture has an underlined G4, and the bottom has an underlined G3. These are the lead finish codes. Please see the following page:

https://www.ti.com/support-quality/environmental-info/logo-product-labeling.html

The top is a LM2901PWRG4 (NiPdAu plating)

The bottom is a LM2901PWRG3 (tin (Sn) plating).

https://www.ti.com/product/LM2901#order-quality

The different plating use different lead frames.

https://www.ti.com/quality-reliability-packaging-download/report?opn=LM2901PWRG3

https://www.ti.com/quality-reliability-packaging-download/report?opn=LM2901PWRG4

Note that if they ordered the LM2901PWR (with no G letters), then they may receive either the G3 or G4 version - depending on what is available in stock.

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LM2901: Lead Frame