CD74HC4051: PCN problem

Grace Chong

Part Number: CD74HC4051

Hi TI team,

PCN# 20240411005.1 was released for CD74HC4051M96.

I have serveral questions reagrding this change notice,could you please help to check them out?

1.CD74HC4051M96 should belong to group 3 in this change. The changes are adding new assembly materials for exisitng assembly site(FMX), but not adding FMX as an additional assembly site. Is this understanding corret?

2.Does wire in assembly material mean bonding wire in the PCN?

3.Please briefly explain the difference between mold compound and mount compound.

Thank you.

7 months ago

0 Rami Mooti1 7 months ago

TI__Mastermind 28178 points

Hey Grace,

1. Can you explain what group 3 is here?

2. Yes that is what is meant

3. The mount compound is the adhesive material used to stick the device to the leads while the mold compound is used for the actual mold enclosure (the black part of the IC that you actually see)

Thanks,
Rami

0 Grace Chong 6 months ago in reply to Rami Mooti1

Prodigy 55 points

Dear Rami,

Please refer to the attached image for the definition of group 3 in this PCN. I would like to clarify that this chnage only indicates the addition of new assembly materials for an exisitng assembly site(FMX).

0 Alex Vish 6 months ago in reply to Grace Chong

TI__Genius 10552 points

Hi Grace,

Please allow until tomorrow for a response due to local storms affective many TI employees.

Regards,

Alex

0 Rami Mooti1 6 months ago in reply to Grace Chong

TI__Mastermind 28178 points

Hey Grace,

The CD74HC4051M96 is in group 3 meaning that the site will change to FMX and the mount compound, mold compound and wire diameter (typical value) will change according to the value in the PCN you highlighted above.

Thanks,
Rami

0 Grace Chong 6 months ago in reply to Rami Mooti1

Prodigy 55 points

Dear Rami,

FMX(TI AGUASCALIENTES) is already an exsiting ASSY for CD74HC4051M96 before this PCN was released, we have records of shipping this device that was made in FMX before. So could you explain how the site will change to FMX?

0 Rami Mooti1 6 months ago in reply to Grace Chong

TI__Mastermind 28178 points

Hey Grace,

I'm going to look into this for clarification then I will take this offline and email you.

Thanks,
Rami

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CD74HC4051: PCN problem