TPD4E02B04: Is this a good P2P for CDDFN10-0524P?

Darren (FAE)

Expert 5483 points

Part Number: TPD4E02B04
Other Parts Discussed in Thread: TPD4E05U06

Is this device the recommended P2P replacement for CDDFN10-0524P, or is there something else that might be better?

over 2 years ago

0 Matt Smith3 over 2 years ago

TI__Expert 8471 points

Hi Darren,

TPD4E02B04 has a lower Vrwm than CDDFN10-0524P, so it would not be able to protect the same type of signals. I would recommend TPD4E05U06. It is a 5.5 V unidirectional device with 4 channels in the same package as CDDFN10-0524P. Let me know if this works.

Regards,

Matt Smith

0 Darren (FAE) over 2 years ago in reply to Matt Smith3

TI__Expert 5483 points

Hi Matt,

The CDDFN10-0524P is being used in a USB3.x (5Gbps) project.

My understanding is TPD4E02B04 has lower Vrwm, but also has lower line capacitance = higher data rate signals (better future-proof capability, going from 5Gbps to 10Gbps)

Whereas TPD4E05U06 has higher Vrwm, but also has higher line capacitance = lower data rate signals (6Gbps, so still better than the needed 5Gbps, but not as future-proof)

So they both have pros and cons.

0 Matt Smith3 over 2 years ago in reply to Darren (FAE)

TI__Expert 8471 points

Hi Darren,

Your understanding is correct. For USB 3 applications, it also depends on what pins you are protecting. Some pins will only go up to 3.3 V and others will go up to 5 V. You want your Vrwm for the diode on that line to be as close to the normal operating voltage as possible. Please refer to our System Level ESD Protection Guide (pages 13-16) for more info on USB protection: https://www.ti.com/lit/sg/sszb130c/sszb130c.pdf?ts=1619448008583 Our ESD by Interface tab on our ti.com page also has good recommendations: https://www.ti.com/interface/circuit-protection/esd-protection-and-tvs-surge-diodes/esd-by-interface.html

Regards,

Matt Smith

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TPD4E02B04: Is this a good P2P for CDDFN10-0524P?