How to name SOT-353 Package

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   Hello,
I'm relatively new to this software, and I'm having trouble determining what category a SOT-353 falls into. The closest match I can find listed is a SOT-23, but SOT-353's are smaller than SOT-23's. Has anyone else encountered this issue?

For reference, this is the package I'm talking about: https://www.nxp.com/docs/en/package-information/SOT353.pdf

Thanks

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adevries Members Profile Send Private Message Find Members Posts Add to Buddy List Active User Joined: 06 Dec 2019 Status: Offline Points: 16	Post Options Post Reply Quote adevries Report Post Thanks(0) Quote Reply Topic: How to name SOT-353 Package Posted: 06 Dec 2019 at 5:27pm
	Hello, I'm relatively new to this software, and I'm having trouble determining what category a SOT-353 falls into. The closest match I can find listed is a SOT-23, but SOT-353's are smaller than SOT-23's. Has anyone else encountered this issue? For reference, this is the package I'm talking about: https://www.nxp.com/docs/en/package-information/SOT353.pdf Thanks



Tom H Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5718	Post Options Post Reply Quote Tom H Report Post Thanks(1) Quote Reply Posted: 06 Dec 2019 at 5:44pm
	The SOT-353 is a 0.65 mm pitch SOT23-5 type package. However, if you want to use the mfr. recommended pattern, you need to use the FP Designer module. You would normally start in the SOT23 calculator and set all the pads to the same value 0.60 X 0.60 then move the footprint to FP Designer to create a new 0.60 X 0.40 pad stack and replace pin 2. Also, edit the pad stacks to make the Paste Mask 0.50 X 0.50 on pins 1, 3, 4, 5. Takes about 4 minutes to make the mfr. pattern.
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