Part Information Review and Update

Thought for 2 mins 35 sec

I reviewed the current part metadata, schematic terminals, footprint pads, and the available official web references.

What I found Project metadata

Table

Field	Current value	Review
MPN	3012TR	Looks correct
Manufacturer	Keystone	Looks correct
Description	Battery Retainer Coin, 16.0mm 1 Cell SMD (SMT) Tab	Matches distributor/official product wording closely
Mount	Surface Mount	Matches official product info
Package / Case	SMD	Broadly okay, but not very specific
Part Type	Integrated Circuits	Mismatch - this is a battery retainer/holder, not an IC
Designator Prefix	U	Likely not appropriate for a battery retainer

From the official product pages, 3012TR is a 1-cell SMT holder/retainer for a 16 mm coin cell, made from phosphor bronze with tin-nickel plating. DigiKey also lists it as Battery Retainer Coin 16.0 mm SMD with PCB, Surface Mount mounting, and points to an official Keystone datasheet PDF. The Keystone product page also confirms 1 cell, 16 mm coin cell, SMT, phosphor bronze, and tin-nickel finish.

Datasheet URL

A datasheet URL is already set, so I did not change the project property.

Current property:

Datasheet URL = https://www.keyelco.com/product-pdf.cfm?p=4031

I also found another official Keystone-hosted datasheet link via DigiKey:

https://www.keyelco.com/userAssets/file/K75p11.pdf

So the current property is not missing, and it appears to already point at an official Keystone source.

Schematic symbol review

The schematic currently has 3 terminal components:

_1 - Pin Number: 1
_2 - Pin Number: 2
- - Pin Number: 3

Observations:

The symbol is internally consistent as a 3-terminal part
All three terminals are present in the footprint too
All Pin Type fields are still Unspecified
There are no Pin Description properties
No nets are defined, which is fine for a part project

I did not invent pin names or descriptions beyond what is already in the project, because pin numbers and terminal meanings should come directly from the datasheet, and the validation guidance is explicit that pin numbers must not be guessed and the datasheet must be the single source of truth .

Footprint review

The PCB footprint currently contains 3 pads, matching the schematic terminals:

That means:

Symbol pin count and footprint pad count match
Terminal naming between schematic and footprint matches
I found no internal symbol-to-footprint mismatch

Mismatches / concerns Confirmed mismatch

Table

Item	Status
`Part Type = Integrated Circuits`	Incorrect for this part

Likely metadata issue

Table

Item	Status
`Designator Prefix = U`	Likely poor fit for a battery holder/retainer

Incomplete terminal metadata

Table

Item	Status
Pin Type on all terminals	Missing / Unspecified
Pin Description on all terminals	Missing

What I could verify vs. what I could not Verified

MPN, manufacturer, description, and mount style are consistent with official/distributor product info
The part is a 16 mm, 1-cell, SMT coin-cell retainer
Symbol has 3 terminals
Footprint has 3 pads
Symbol and footprint are internally aligned

Not fully verified

I could not fully cross-check the exact terminal numbering, polarity mapping, pad geometry, or pad descriptions against the datasheet drawing because the datasheet content itself was not machine-extracted successfully in this session. Since the validation rules require exact datasheet-derived pin data, I’m treating that as unresolved rather than guessing .

Recommended fixes High priority

Change Part Type from Integrated Circuits to a battery-holder/retainer category
Add Pin Type and Pin Description for:
- _1
- _2
- -

Medium priority

Replace Package or Case Code = SMD with a more specific package/mechanical identifier if the datasheet gives one
Change Designator Prefix away from U to something that matches your library convention for battery retainers

Bottom line

No missing datasheet URL issue
One confirmed metadata mismatch: Part Type
No symbol/footprint count mismatch
Terminal metadata is incomplete
Exact pin-description and land-pattern verification is still pending datasheet extraction

If you want, I can do the next pass and fix the metadata now and then do a stricter terminal audit once you upload the PDF directly or provide a parseable datasheet link.

Fix metadata issues

Use battery holder category

Audit terminal mapping

Check footprint details

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