Community Translation - Thermal Data (THETA JB) for QFN and DFN Packages - KBA88214

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KoKi_1693136
Level 5
Level 5
Distributor - Marubun (Japan)
5 solutions authored 25 replies posted First solution authored

Hi,

I translated following one into Japanese.

Thermal Data (THETA JB) for QFN and DFN Packages - KBA88214

https://community.cypress.com/docs/DOC-9385

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タイトル:QFNパッケージとDFNパッケージの熱データ(ΘJB

質問:

QFNパッケージとDFNパッケージで使われる熱データ(ΘJB)は何でしょうか。

回答:

従来のΘJCは、QFNパッケージやDFNパッケージには役立ちません。なぜなら、熱の流れは、主に(90%以上)半田付けされたパドルからボードへの流れであり、パッケージの上面からではありません。ジャンクションからパッケージの底面までの熱抵抗の方が役立ちます。ボードの素材が銅の場合、ボードの熱抵抗は重要ではなくなります。

したがって、ΘJB = ΘJC Bottom となります。

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2 Replies
JennaJo
Moderator
Moderator
Moderator
1000 replies posted 750 replies posted 500 replies posted

Hello,

We receive your translation, it will be published to KBA to Community.

After upload, You will receive the points as the word of KBA.

Due to the current delay of processed work, Please bear with me for the delayed the response.

It could be delayed, but it will be processed soon.

Thanks for your contribution to CDC!

Will keep you update the status.

Thanks,

Jenna Jo

Jenna Jo
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MotooTanaka
Level 9
Level 9
Distributor - Marubun (Japan)
First comment on blog Beta tester First comment on KBA

Hi,

I reviewed this Japanese translation.

And I found no problem(s) with this.

Best Regards,

13-Oct-2020

Motoo Tanaka

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