Hi I'm looking for some help in estimating the lifetime of a triac for a customer.
I have thermal models and have performed lab tests to estimate junction temperatures and case temperatures.
I expect the Junction to reach 115C peak. The Case to be 100C during peak loads. Ambient temperature is 65C. So I expect thermal cycle deltas of 50C for every load case. The loads last 2 minutes and I want to be able to estimate for the customer how many loads they can expect to achieve over the life of the product.
The triac is: T1620T-8I
The only analysis I have seen is the following:
(PDF) A Coffin-Manson model to predict the TRIAC solder joints fatigue during power cycling (researchgate.net)
Can anyone at ST help me out?
