Reliability and Quality Information for LMZ21700

Adam Garrison1

Other Parts Discussed in Thread: LMZ21700

I was hoping to get some reliability information on LMZ21700 650 mA SIMPLE SWITCHER. It would be great if you can provide some information on the following

Is there any reliability test information. Eg. shock, vibration, temp cycling, high temp dwell, low temp dwell etc
Any information on failure modes, failure mechanisms, key stress factors, failures associated with infant mortality, wearout and overstresses for the part.
Any DFMEA and PFMEA
Any concerns with reflowing the part? Can the inductor be misaligned or fall off during reflow J?
What is the solder material for inductor on the DFN?
Any product integration guidelines: e.g., assembly process cautions, Do’s and Don’ts etc

Any information you can provide would be a huge help!

Thanks,

Adam

over 8 years ago

0 Frank De Stasi over 8 years ago

TI__Guru 57555 points

I have attached two documents that might be helpful. Also, in the product folder under the tab "Quality..." there may be more information.

I will pass this along to the product engineer for this device and he may be able to give you more help.

7041.Nano Module SMT Summary.pptx snoa401r.pdf

0 Fitsum Keflezighi over 8 years ago

TI__Prodigy 70 points

Adam,

In addition to what Frank provided you, here are some additional reliability info:

- The device passed the following required reliability stress tests:

* High Temperature Operational Life

* bHAST( biased high temp/humidity stress test)

* Temperature Cycle

* Board Level Reliability(BLR)

- Temperature Cycle

- Drop Test

0 Adam Garrison1 over 8 years ago in reply to Fitsum Keflezighi

Intellectual 580 points

Any updates on the reliability test conditions and duration

Also,

Any concerns with reflowing the part? Can the inductor be misaligned or fall off during reflow J?
What is the solder material for inductor on the DFN?
Any product integration guidelines for Physio: e.g., assembly process cautions, Do’s and Don’ts etc

Thanks in advance!

Adam

0 Adam Garrison1 over 8 years ago in reply to Adam Garrison1

Intellectual 580 points

We had some follow-up questions that need answering. See above.

0 Fitsum Keflezighi over 8 years ago in reply to Adam Garrison1

TI__Prodigy 70 points

You need to request the reliability report through RSSL(Regional Sales Support Line), the report has all the conditions and durations.

0 Adam Garrison1 over 8 years ago in reply to Fitsum Keflezighi

Intellectual 580 points

Few last questions on this.

What is the solder joint material for the inductor. Is it SAC 305? I just want to make sure that solder joint for the inductor is compatible with our reflow profile.

Is the flux chemistry used to attach the inductor no clean or water wash flux? We will be using a water wash process with DI water.

Thank you very much for getting us all the information, we really appreciate your help and support

0 Fitsum Keflezighi over 8 years ago in reply to Adam Garrison1

TI__Prodigy 70 points

Adam, the solder paste is SAC305 and the flux is water washable.

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Reliability and Quality Information for LMZ21700