DM3730: Thermal considerations

Part Number: DM3730

Hello, Please find attached below a forum message I sent on May 14th.

Regarding case


We are using the specified device (DM3730CUSD100) in our application.

Looking at table 3-3 under the OPP130 col for 105C there is no information available, do you have any?

We might have a case where we use the industrial component with junction temperature exceeding 90C (Lets say 92-95C for short time periods - seconds), do you know if the possible damage to the life time of the device is addative? (Other way to ask it if the device only partially works at high junction temperature what are the risks?

Is table 3-3 valid for the extended temperature range or only for the industrial?

Should I worry about using the industrial devices for few seconds at ~95C?

Another question is what is the difference between the extended temp range and the industrial devices? Is it produced in the same line and the difference is tests only?

Thank you.

I got in return:

Hi Eli az,

There is no available additional information about DM3730 device POH life.
I can not guarantee stable work of an industrial temperature range device when the junction temperature exceeds 90 C.
The extended temp range device can works up to 105 C junction temperature vs 90 C for industrial.

Tsvetolin Shulev


And I sent back:


I am asking this question because of the difference in the reliability reports over time.

A few years ago in 2014 I got a reliability report with 3 fails of the industrial device with 0.5keV activation energy.

The reliability report of the extended temp range now is for 0.7keV.

This is why I want to know if there are different processes for both or if the upgrade to the extended temp range is transperent?


The point is that I want to know why the reliability reports changed and if there is significant changes in the manufacturing process between the extended range and industrial product. I need to know if the change between them will be transparent.



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