how to understand datasheet Tvjmax=175 ?

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lily
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How to understand the maximum working junction temperature 175 in the specification? Is the maximum junction temperature of HTRB 175 passing 1000h in the reliability test? Or the maximum working junction temperature of overload during operation 175

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Anil_Y
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100 replies posted 50 solutions authored 10 likes received

Dear @lily ,

Good day!!

 

1) Is heat sink installed in HTRB test?

Ans: Yes.

For HTRB test conditions please refer our Product Qualification Report (PQR) of IKW40N120H3 which is attached.

As well as you can use below link also to download from Infineon product page.

Link: https://www.infineon.com/cms/en/product/power/igbt/igbt-discretes/ikw40n120h3/#document-group-myInfi...

For the HTRB test the max allowed junction temperature is approximated via the oven temperature and the  power loss (leakage current * stress voltage).

As it is a Quality related question, If you want further support I request you to create a case under the sales support track in the Mycases portal. Each track on the Mycases portal has a short description of the kind of questions supported by them. Kindly go through the description and submit your questions in the respective track. 

 

Best Regards,

Anil Kumar.

 

 

 

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Anil_Y
Moderator
Moderator
Moderator
100 replies posted 50 solutions authored 10 likes received

Dear @lily ,

Good day!!

Thanks for posting your query in Infineon community.

Tvjmax specified in datasheet is the maximum virtual junction temperature. This value is calculated with the help of thermal network not directly measured at the junction, so it is called virtual junction temperature. beyond this maximum junction temperature damage may occur to the device, so we have to keep junction temperature with in this Tvjmax value.

High Temperature Reverse Bias (HTRB) test is used for evaluating reliability of the power devices.

During an HTRB test, device samples are stressed at or slightly less than the maximum rated reverse breakdown voltage at an ambient temperature close to their maximum Tvjmax over a long time - typically 1,000 hours.

This test can be used to check junction integrity, crystal defects, and ionic contamination level, which can reveal weaknesses or degradation effects in the field depletion structures at the device edges and in the passivation.

 

Best Regards,

Anil Kumar.

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lily
Level 1
Level 1
5 sign-ins First reply posted First question asked

The tube of Infineon 1200V H3 undergoes HTRB at 150 ambient temperature, resulting in significant leakage and failure. Is there a heat sink installed? Why can't I pass 150 HTRB at a junction temperature below the nominal 175

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Anil_Y
Moderator
Moderator
Moderator
100 replies posted 50 solutions authored 10 likes received

Dear @lily ,

Good day!!

Could you please tell me the Infineon 1200V H3 tube part number.

 

Best Regards,

Anil Kumar.

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lily
Level 1
Level 1
5 sign-ins First reply posted First question asked

IKW40N120H3

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Anil_Y
Moderator
Moderator
Moderator
100 replies posted 50 solutions authored 10 likes received

Dear @lily ,

Good day!!

 

1) Is heat sink installed in HTRB test?

Ans: Yes.

For HTRB test conditions please refer our Product Qualification Report (PQR) of IKW40N120H3 which is attached.

As well as you can use below link also to download from Infineon product page.

Link: https://www.infineon.com/cms/en/product/power/igbt/igbt-discretes/ikw40n120h3/#document-group-myInfi...

For the HTRB test the max allowed junction temperature is approximated via the oven temperature and the  power loss (leakage current * stress voltage).

As it is a Quality related question, If you want further support I request you to create a case under the sales support track in the Mycases portal. Each track on the Mycases portal has a short description of the kind of questions supported by them. Kindly go through the description and submit your questions in the respective track. 

 

Best Regards,

Anil Kumar.

 

 

 

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lily
Level 1
Level 1
5 sign-ins First reply posted First question asked

Dear AK, 

Good day!!

Thank you very much for your answer.

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