Comments on: Constant Temperature Accelerated Life Testing using the Arrhenius Relationship

By: Svebor Tomasović

Svebor Tomasović — Mon, 03 Oct 2016 07:36:32 +0000

In case I make 30-day burn-in test of may DUT (communication converters) on the temperature of 80°C and 30-day temp. cycling test from -20°C to 80°C (temp. change rate is relatively slow – 3°C/min) do I then need to derive some average acceleration factor (like mean value between acceleration factor for bur-in and acceleration factor for temperature cycling?

By: DES

DES — Wed, 06 Apr 2016 13:56:39 +0000

In reply to AK. You are correct.

By: AK

AK — Wed, 06 Apr 2016 12:27:33 +0000

In reply to yk. The objective of HALT is to accelerate the life of a product and therefore you test the product at extreme test values. So one should have the test temperatures much greater than normal values.

By: yk

yk — Thu, 18 Dec 2014 09:39:02 +0000

Can I use Arrhenius Relationship to determine Accelerated factor, Af when test temperature is lower than use temperature?

By: DES

DES — Wed, 18 Jun 2014 17:47:59 +0000

In reply to kishore. Typically we assume Ea to be constant. It is not easy to find values for Ea. We typically do a Google Search. Thanks for the reply.

By: kishore

kishore — Tue, 17 Jun 2014 02:02:18 +0000

Thanks for your information. I was very usfull.

How can i get Ea value for copper and polyimide
materials?

Is Ea value will change based on my T2 temperature for same material?