Dave,



Typical non-operating burn-in is -40C to +85C, but make sure this doesn't exceed your component storage temperature ranges.  If you can get a 10-15 degree/minute rate of change great, if not the larger chambers can do 5 deg/minute.  You can start with 10 cycles and track the lots to see if it produces failures sooner.



Jim Carlson

Quality Manager, Gov’t Product Service Center 

KeyW, a wholly owned subsidiary of Jacobs 

7763 Old Telegraph Rd, Building 1 | Severn, MD 21144

Direct: 443.274.1524 | Main: 443.274.1500

Cell: 443.438.0556

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www.jacobs.com



-----Original Message-----

From: TechNet <[log in to unmask]> On Behalf Of Dave Schaefer

Sent: Monday, September 09, 2019 3:43 PM

To: [log in to unmask]

Subject: Re: [TN] Burn In Specification for Mositure Sensitive Leds



James,



Thanks for the quick reply.



The components in question are from a single manufacturer and are MSL6 devices. They are properly stored and processed by the CM; have verified the appropriate pre-bake and reflow profile are being used. The majority of the failures we have seen are instant hard failures after bare board assembly but we have seen a few creep through into final assemblies. At this point I believe all components consumed are from a single lot from the manufacturer. I have reached out to the manufacturer in an attempt to determine how they assure component quality prior to shipment but they have not shared any information of value.



Thanks,

Dave