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Burr Brown ICs bad solderability

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#57315

Burr Brown ICs bad solderability | 18 November, 2008

Hi folks! TI told us that we are the only one with the following problem... We discovered a really bad wetting characteristic of some SMD ICs from BurrBrown. At the moment: XTR106 / INA118 / ADS7844. After the reflow process we found out that this particular IC do not contact properly with the solder and the pcb. Other IC from other firms on the same board do not have this problem. Please see the pictures. If you have similar difficulties, please post here to have some more arguments for a new report to TI. Thanks a lot. Best regards, Andy.

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#57326

Burr Brown ICs bad solderability | 18 November, 2008

We had very similar solderability problem with TI P/N SN74LVC2G34DCKR.

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#57339

Burr Brown ICs bad solderability | 19 November, 2008

TI was leadfree before ROHS. I saw TI solderability issues over 10 years ago. The leads have paladium and need higher reflow temperatures.

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#57349

Burr Brown ICs bad solderability | 20 November, 2008

I always thought that the use of palladium was specifically for conductive epoxies!?!

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#57415

Burr Brown ICs bad solderability | 25 November, 2008

We had the same issue with the INA121's a while back if im not mistaken... i believe the design was changed do to other reasons with that part and the prob went away.

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#57430

Burr Brown ICs bad solderability | 26 November, 2008

I don't know why they use it. I just know I read a TI white paper that said the problem wasn't their fault even though they knew that paladium made the parts hard to solder.

And once when I started a new job one of the guys said that the owner had had a part fall off the board into his hand when he picked the assembly up. I asked if it was a TI part, and it was.

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#57450

Burr Brown ICs bad solderability | 1 December, 2008

We have same problem with Burr Brown OPA277UA.

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#57458

Burr Brown ICs bad solderability | 1 December, 2008

Jandon, what is wrong with the picture you posted? Looks good to me? The first pix Wewilldoit posted were kinda scetchy except for the one with the bent up lead.

It's not the toe fillets people - it's the heel fillets you have to look at.

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