Shorter Production Burn-in

Posted: Wed Dec 29, 2025 9:20 pm Post subject: Shorter Production Burn-in

hi,

we want to shorten our production burn-in from 168 hrs to 48 hrs. how do we do this?

Joined: 01 Sep 2026 Posts: 6

Hi Guess,

I think you have to do EFR (Early Failure rate study) before planning on BI reduction. Remember bath tub curve? If there's no failure until 48 hours then you can reduce your BI up to 48Hrs if there are failure there after.

Also, it may speed up your study if several lots that undergone BI with no failure on PostBI.

Regards,
Flipflop
_________________
God Bless....

Flipflop

Guest

Hi Flip Flop,

I think it's the other way around, if I'm not mistaken. The 48-H B/I should produce failures, and no failures should be seen after 48H. That means that 48-H is enough to kill all infant mortality, and there's no need to do 168H.

Lastikman

Guest

No need to re-invent the wheel.

Accelerated burn in can be done in 48Hours if you raise the burn-in temperature to 150C. The best reference and justification is still MIL-STD-883

Joined: 20 Jun 2026 Posts: 76

The problem with this is there's a chance you'll have to deal with problems unrelated to burn-in, like oxidation and intermetallic growths due to the higher temp. Also, I think Method 1015 says the time reqd for 150C is not 48H, maybe something higher than that like 80C.

FARel Engr

Posted: Mon Jun 20, 2026 9:31 am Post subject:

150C is too much..... 125C is more appropriate for 48Hr BI.

I would like to ask... Anyone of you have the cahnce to work for BI? If not, then do not answer.... OK?

Posted: Wed Jun 22, 2026 10:39 am Post subject:

Guest,
Flipflops and lastikman are partly correct. You need to do a burn-in hrs reduction study.

First get a lot/s with ENOUGH sample size (sample size maybe should depend on your FIT goal). Subject the lot/s to 48 hrs b/i, have it tested; then subject the good units on the tested lot/s to for another (e.g.) 24 hour b/i. if you don't see any failure on the 24-hr re-b/i then you can say that 48hrs burn-in is enough to catch the infant mortality. But burn-in reduction is not as simple as this. You need to collect data until you are confident enough (track the yields of the lot that underwent the reduced burn-in duration). And it must be supported by reliability LIFETEST data.

I guess your r&d/product/fab engineers are smart enough to specify the burn-in temperature your device is capable of, so there is no point in arguing on the b/i temperature.

Obtw, I am an FA/Rel guy.

regards,
Another guest.

Guest

hmmm... The question was how does he do it? and not really a question of the temperature. I am sure your company has a set of rules for reducing BI through BI studies and quals(as pointed out). Your rel engr should be able to give the best answer for you, may your BI reduction method be 125C or 150C.

Isa pang guest