I need to compile a complete mismatch list. The names match, but they have the N.C suffix for decoration, which is fine. However, there’s an issue with unspecified types versus the datasheet types. It looks like all 40 pins' descriptions and groups are missing, which complicates things. I must classify the pin type mismatches and list them to help the user. The extra symbol pin isn't listed in the datasheet; its dimensions are also off, which could be problematic.
Assessing pin layout issues
I see that the Pin1 marker is located at (-3.375, -3) in the EDA tool, and the pad is at (-2.95, -2.25), suggesting they share a corner. However, I need to clarify the courtyard and dimensions, ensuring there's no overlap with the pads. The exposed pad is marked as pin 41, but the datasheet doesn’t list its electrical type, which could be risky. Also, I'm missing essential metadata, and there seems to be confusion between the project description and the library. Overall, this setup isn't safe for production yet.
can you group together pins by their functions?
for example for Power, 3v3, gnd_1 gnd_2 etc
NOTE: If you group them, can you not add the same pin if you already added them in a group? You should know which pin function is common for its function.
Yes. I’ll assign every physical pin to exactly one broad functional group based on its primary datasheet function, keep Section equal to Pin Group, place Power first and Ground last, and avoid all duplicate group membership.
Grouped all 41 pins by their primary function with no duplicate membership; Section matches Pin Group, and pins 1–40 now include datasheet-based types and descriptions. The audit also found a production-critical exposed-pad paste mismatch, and I filed an internal part-quality report.
Power is oriented Top and ordered first. Ground is oriented Bottom and ordered last. Other groups are consistently placed Left or Right. Pins 1–40 now have datasheet-derived electrical types and concise descriptions. EP remains Unspecified because the datasheet pin table does not authoritatively state its electrical connection.
Symbol verification
41 terminals are present exactly once: pins 1–40 plus EP 41.
Pin numbers and names match the datasheet functionally.
No missing, swapped, or duplicated pin numbers were found.
Every terminal has one Pin Group and a matching Section.
Pins 1–40 now have Pin Type and Pin Description metadata.
TESTEN is documented as requiring connection to ground for normal operation.
Pins 20–22 are explicitly Not Connected.
SVDD and DVDD are correctly identified as power outputs, not supply inputs.
Metadata gaps
The following part-level metadata remains absent or incomplete:
Part Type
Package or Case Code
Mount
The part name uses an underscore (PN5321A3HN_C106,51) rather than the exact order-code slash, although the Manufacturer Part Number property is correct.
Footprint review
Correct features:
40 perimeter pads plus exposed pad 41
0.50 mm pitch and 10 pads per side
6 × 6 mm body outline
Correct pin numbering and pin-1 corner
Exposed center pad and STEP model
Mismatches against NXP SOT618-1 recommendations:
Perimeter pads are 0.30 × 0.85 mm; NXP recommends approximately 0.29 × 0.90 mm.
Exposed copper pad is 4.25 × 4.25 mm; NXP recommends a 4.10 × 4.10 mm PCB land.
Critical: exposed-pad solder paste is one full 4.25 × 4.25 mm opening. NXP recommends a segmented 3 × 3 array of 0.60 × 0.60 mm paste apertures, spanning 2.40 × 2.40 mm overall.
The full-area paste aperture can cause excessive solder, package float or tilt, voiding, bridging, and unreliable perimeter joints. The footprint is therefore not recommended for production as-is. An internal part-quality report was filed for this issue.
Overall verdict
The symbol pin mapping and newly added functional organization are sound. The part is suitable for schematic work with the EP connection independently reviewed, but the exposed-pad copper/paste implementation should be corrected and validated before PCB assembly release.