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# module lead resistances RCC'EE'

Level 1
Level 1

Good evening!

What is the meaning of the so called lead resistances RCC'EE'  in the module data sheet?

Does resistance refer to this in the figure? Is it a bridge arm or half a bridge arm?

Thanks!

1 Solution

# Re: module lead resistances RCC'EE'

Moderator
Moderator

Dear @zhangxiaowen

The lead resistance of the module is a further contributor to voltage drop and thus power losses. The specified
value in the datasheet characterizes the lead resistance between the power terminals of one switch. According
to the equivalent circuit shown in below, the module lead resistance is defined as:

𝑅𝐶𝐶′+𝐸𝐸′ = 𝑅𝐶′𝐶′′ + 𝑅𝐶𝐶′′ + 𝑅𝐸𝐸′′ + 𝑅𝐸′′𝐸′

Also please refer to the attached application notes for more details

https://www.infineon.com/dgdl/Infineon-HybridPACK%20Automotive%20Power%20Modules-ApplicationNotes-v0...

Thanks & Best Regards,

Akhil Kumar.

5 Replies

# Re: module lead resistances RCC'EE'

Level 1
Level 1

and how is the resistance measured?

# Re: module lead resistances RCC'EE'

Moderator
Moderator

Dear @zhangxiaowen

Thanks for posting on the Infineon developer community.

Can you please let me know the part number you are testing for?

Thanks & Best Regards,

Akhil Kumar.

# Re: module lead resistances RCC'EE'

Level 1
Level 1

FS400R07A1E3，used as inverter.

THANKS!

# Re: module lead resistances RCC'EE'

Moderator
Moderator

Dear @zhangxiaowen

The lead resistance of the module is a further contributor to voltage drop and thus power losses. The specified
value in the datasheet characterizes the lead resistance between the power terminals of one switch. According
to the equivalent circuit shown in below, the module lead resistance is defined as:

𝑅𝐶𝐶′+𝐸𝐸′ = 𝑅𝐶′𝐶′′ + 𝑅𝐶𝐶′′ + 𝑅𝐸𝐸′′ + 𝑅𝐸′′𝐸′

Also please refer to the attached application notes for more details

https://www.infineon.com/dgdl/Infineon-HybridPACK%20Automotive%20Power%20Modules-ApplicationNotes-v0...

Thanks & Best Regards,

Akhil Kumar.

Level 1
Level 1

Thanks!!!