LM317: baking condition below 125℃

Sho Ikeno

Prodigy 320 points

Part Number: LM317

Tool/software:

hi,

for LM317SX/NOPB, customer has some inventory and want to prebake but their equipment only supports up to 98℃.

datasheet states 125℃/48h but how long should they bake at 98℃? or is 125℃ a necessary requirement?

regard's,

Ikeno

2 months ago

0 Nick Butts 2 months ago

TI__Mastermind 47845 points

Hi Ikeno,

Can you point to the place in the datasheet that it says this? I don't believe there is a requirement for baking. How long have they had the devices in storage?

Regards,

Nick

0 Sho Ikeno 2 months ago in reply to Nick Butts

TI__Prodigy 320 points

the datasheet is was written in Japanese so added a translation. this condition may be out dated. could you check on this?

storage condition is 5℃～30℃/ below 10%RH,aluminum bag with desiccate placed in McDry shelf since 2023/Nov.

0 Nick Butts 2 months ago in reply to Sho Ikeno

TI__Mastermind 47845 points

Hi Ikeno,

Thanks for sharing. Since this is an MSL 3 device, it's probably a good idea to bake the devices. I've reached out to the packaging team for baking specifications. I'll get back to you when I hear back.

Regards,

Nick

0 Nick Butts 2 months ago in reply to Sho Ikeno

TI__Mastermind 47845 points

Hi Ikeno,

The packaging team sent me a copy of the document IPC/JEDEC J-STD-033D (linked to the download - it's free but must register to download), which in Section 4 there is Table 4-1 that has the bake times they are looking for.

Regards,

Nick

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LM317: baking condition below 125℃