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IGBT Forum Discussions

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

My F3L15R12W2H3_b21 IGBT has stopped working. Now I can’t find any b21 but there is information on the B27 to find. What is the B21 difference with the B27, cause I want it replaced but not with even more damage.

thank you in advance for your reply

kind regards

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1 Solution

Dear @Flightation 

The F3L15R12W2H3_B27 can be used in your application. 

If B27 is available for order please go ahead and use both products' specifications are matching.

For your information the difference between B21 and B27 is 

The B21 is having lesser 3 level diode  current than  B27.

The B21 Diode is having below ratings.

Guru_Prasad_0-1674454825102.png

The B27 Diode is having below ratings.

 

Guru_Prasad_1-1674454913548.png

 

Note: You can use B27, I can only guess the risk is small. but the repaired inverter will surely have

different performance. usually customer need to qualify the new module.

Thank you

Guru

View solution in original post

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8 Replies
Guru_Prasad
Moderator
Moderator
Moderator
25 likes received 250 sign-ins 50 solutions authored

Hello @Flightation ,

Thank you for posting your question on the Infineon community page.

The B27 is also a discontinued part. 

mean while let me check and internally also what is the exact difference between B21 and B27.

Please let me know if you want other part so that i can suggest other also  

Thank you

Guru

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Dear @Flightation 

The F3L15R12W2H3_B27 can be used in your application. 

If B27 is available for order please go ahead and use both products' specifications are matching.

For your information the difference between B21 and B27 is 

The B21 is having lesser 3 level diode  current than  B27.

The B21 Diode is having below ratings.

Guru_Prasad_0-1674454825102.png

The B27 Diode is having below ratings.

 

Guru_Prasad_1-1674454913548.png

 

Note: You can use B27, I can only guess the risk is small. but the repaired inverter will surely have

different performance. usually customer need to qualify the new module.

Thank you

Guru

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Thank you @Guru_Prasad 

I will try to find a B27 module.

I also aksed via SMA but no information yet. SMA refers me to installers and installers want to sell a new one…

Could you please explain to me what you meant with: customer need to qualify the module?

Once again thank you for investigating and continuing helping me with finding a solution.

 

Kind regards,

Flightation

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Hello @Flightation 

In this case customer is SMA for Infineon. 

Thank you

Guru 

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

Thank you Guru for your reply.

If B27 fit’s then it would be possible to order online still.

But if you know a different IGBT module to fit in then that would be great also.

For some extra information: it is fitted inside a SMA Tripower 5000TL inverter which gives me a error code 6437 on the AC side. Allthough the problems started with an error code 3302 (yes there was enough sunshine to couple) on the DC side. So I am not sure if I also need to replace the module on the DC side as well: DF120R12W2H3_B27

This might be a discontinued item as well but I don’t like to throw away a complete system because of a simple module that has failed.

Thank you in advance for your time and effort!

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Guru_Prasad
Moderator
Moderator
Moderator
25 likes received 250 sign-ins 50 solutions authored

Hello @Flightation 

Please contact to SMA only because we are not aware of error code 6437 and the failure happened on field also. please contact to them only.

They will help you with right solutions.

Thank you

Guru

 

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

Hello Guru,

Why the sudden change from being helpfull to ending the topic? I only gave some additional information and ‘boom’ go to SMA. Going to SMA will not change the fact the IGBT module has to be replaced. And since it is a Infineon module the best person to give me an alternative is someone working at Infineon. So I don’t understand this sudden move.

Now I am being forced in buying a new product and discard this one, there goes our environment friendly approach.

kind regards

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Guru_Prasad
Moderator
Moderator
Moderator
25 likes received 250 sign-ins 50 solutions authored

Hello @Flightation 

I agree with your point.  the device selection I am working on it. 

I was saying about  SMA Tripower 5000TL inverter which gives me a error code 6437 on the AC side.

Thank you

Guru

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