Fixing Missing Footprint Error
0:44
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Inspecting component info.
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Using Schematic Tool.
Running multiple web searches.
Searching for a component.
Finished searching for a component.
Found 9 results.
Found 10 results.
Found 10 results.
Looking for "Package name and package pin count for EM4305" in 4205-4305-DS-01.pdf
Looking for "Package mechanical dimensions for EMDFN-02 package" in 4205-4305-DS-01.pdf
Looking for "Pin configuration or pad connection names for EM4305 package" in 4205-4305-DS-01.pdf
Looking for "EM4305 direct antenna connection and resonant capacitor details" in 4205-4305-DS-01.pdf
Here’s what I found for U8:
What U8 currently says in your project
| Item | Value |
|---|---|
| Part | EM4305 |
| Manufacturer | EM Microelectronic |
| MPN | EM4305 |
| Package property | EM4205_EM4305_EMDFN02 |
| Package code | EMDFN-02 |
| Footprint property | EM4205_EM4305_EMDFN02 |
From the official datasheet for EM4305:
Table
| Datasheet item | Value |
|---|---|
| Package name | EMDFN02 |
| Package style | 2 leads Plastic Package |
| Body size | 2.20 mm x 1.78 mm |
| Thickness | 0.76 mm |
| Tolerance note | All dimensions in mm |
Pin / pad mapping found in the datasheet
| Pad name | Datasheet description |
|---|---|
| Coil 2 | Coil connection 2 |
| Test | Test purpose, NC, active pad |
| V test 1 | Test purpose, NC, active pad |
| V test 2 | Test purpose, NC, active pad |
| Coil 1 | Coil connection 1 |
The likely root problem is not just missing geometry. The part definition behind U8 appears incomplete.
The library entry for EM4305 is showing 0 terminals, which strongly suggests the part project does not have a valid symbol/terminal-to-footprint setup yet. That would absolutely cause a Missing Footprints-type failure even if a text property says “Footprint”.
What to fix in the part project
For the part project of EM4305, make sure it has:
Table
| Required fix | What to check |
|---|---|
| Footprint asset | A real footprint object exists, not just a footprint property string |
| Terminals | The part has actual terminals defined |
| Terminal mapping | Each terminal is mapped to the correct footprint pad |
| Package choice | Confirm whether you want the 2-lead EMDFN02 package or a bumped-die style implementation |
In the part project, verify these exact terminal mappings first:
Table
| Logical terminal | Map to footprint pad |
|---|---|
| Coil 1 | Coil 1 |
| Coil 2 | Coil 2 |
And if you include the test pads in the footprint, keep them as NC / non-user terminals unless your exact package variant requires otherwise.
If you want, I can now give you a click-by-click checklist for rebuilding the footprint and remapping the terminals for U8.
3 days
Clean up U8's terminals so Coil 1 and Coil 2 map correctly, and leave test pads as NC.
3 days
0:16
Chat History
Project
Evaluating project actions.
Checking if I can make the changes for you.
I can take care of that for U8: clean up its terminal properties so Coil 1 and Coil 2 are the functional terminals, and leave the test pads as NC.
If you want, apply the change and I’ll handle that specific update.
3 days
Applying changes...
0:21
3 days
Applying changes...
0:15
3 days
Applying changes...
0:19
3 days
Ready.
U8
Reviews
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Compact wearable smart cat collar PCB focused on ultra-low power, miniaturized size, curved-edge waterproof-friendly mechanical fit, GNSS tracking, motion sensing, RFID compatibility, Li-ion charging, and robust mass-production readiness.
Properties
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Arrow | $5.76–$6.84 |
Digi-Key | $6.17–$7.20 |
LCSC | $10.38–$10.48 |
Mouser | $8.36–$8.56 |
TME | $3.68–$3.80 |
Verical | $2.18–$14.15 |
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