CSD19533Q5A: What happens when only two of the four pins of a MOSFET have pads on the PCB?

MinHo Song

Part Number: CSD19533Q5A

Tool/software:

The CSD19533Q5A has a 4-pin drain as shown in the image on the left below. However, what problems can occur if the PCB pad is designed with only 2 pins as shown in the Gerber image on the right below?

2 months ago

+1 John Wallace1 2 months ago

TI__Mastermind 32720 points

Hello MinHo,

Thanks for your interest in TI FETs. The recommended PCB footprint in the FET datasheet was evaluated and used in qualification of the CSD19533Q5A. I have forwarded this onto our SMT expert for his input. I will update you as soon as I have more information.

Best Regards,

John Wallace

TI FET Applications

0 John Wallace1 2 months ago in reply to John Wallace1

TI__Mastermind 32720 points

Hello MinHo,

Below is the feedback from our SMT expert.

Customer did not provide detail size for review.

If the solder did not move post reflow process.

I think this is workable.

Best Regards,

John

Power management

Power management forum

CSD19533Q5A: What happens when only two of the four pins of a MOSFET have pads on the PCB?