This review requires Agent mode to search for the official datasheet, update the Datasheet property, and validate the symbol, footprint, and pin mapping against it. Click Continue in Agent Mode and I’ll complete the audit and report any mismatches.
I’ll audit the part metadata, locate and cite the official datasheet, update the Datasheet property if needed, then verify the symbol, pin mapping, and footprint geometry.
The part definition is internally inconsistent. Its footprint and original library description correspond to a Diotec Semiconductor 2N2222A in TO-92, while the currently attached datasheet/manufacturer metadata and project description correspond to a Microsemi/Microchip 2N2222A in TO-18. These are different manufacturer/package variants with different ratings and mechanical construction.
The Datasheet URL property was not overwritten, because a URL is already populated. The correct official datasheet for the footprint/original Diotec identity is:
https://diotec.com/request/datasheet/2n2222a.pdf
Current Part InformationOfficial Diotec Variant: Key Specifications
Audit complete: the part has a critical variant mismatch—Microchip/Microsemi TO-18 metadata and ratings are paired with a Diotec-style TO-92 footprint. Pins 1 and 3 also lack Emitter/Collector descriptions; the existing Datasheet URL was not overwritten because it was already populated.
Full cited findings: Part Audit. An internal part-quality report was also filed.
The part definition is internally inconsistent. Its footprint and original library description correspond to a Diotec Semiconductor 2N2222A in TO-92, while the currently attached datasheet/manufacturer metadata and project description correspond to a Microsemi/Microchip 2N2222A in TO-18. These are different manufacturer/package variants with different ratings and mechanical construction.
The Datasheet URL property was not overwritten, because a URL is already populated. The correct official datasheet for the footprint/original Diotec identity is:
https://diotec.com/request/datasheet/2n2222a.pdf
Current Part Information
Table
Field
Current state
Assessment
MPN
2N2222A
Valid but not manufacturer-unique
Pin count
3
Correct for both compared variants
Manufacturer metadata
Microchip Technology; attached PDF identifies Microsemi Lawrence
Conflicts with the original Diotec library description and TO-92 footprint
Description
NPN BJT, 50 V, 800 mA, 500 mW, TO-18
Consistent with the attached Microsemi/Microchip variant, inconsistent with the footprint
Datasheet URL
Populated with a hosted Microsemi/Microchip PDF
Not changed under the user's “if missing” condition
Footprint asset
TO92254P470H750-3.kicad_mod
TO-92-style, three inline leads at 2.54 mm pitch
3D model
2N2222A.step
Present; exact model-to-package identity was not independently established
Symbol terminals
Pins 1, 2, 3; all typed Passive
Pin numbers exist, but names/descriptions are incomplete
Official Diotec Variant: Key Specifications
Diotec identifies its 2N2222A as a general-purpose NPN transistor in a TO-92 package.
Table
Parameter
Diotec rating
Collector-emitter voltage, VCEO
40 V
DC collector current, IC
600 mA
Peak collector current
800 mA
Power dissipation
625 mW
Junction temperature
-55 to +150 °C
hFE at IC = 150 mA, VCE = 10 V
100 to 300
VCE(sat) at IC = 150 mA, IB = 15 mA
0.3 V max
Gain-bandwidth product
250 MHz min
The Diotec bottom-view pin assignment is 1 = Emitter, 2 = Base, 3 = Collector.
Symbol Cross-check
The symbol has three terminals numbered 1, 2, and 3, so the pin count is correct.
Terminal 2 / the center footprint pad is labeled B, consistent with the Diotec pinout.
Terminals 1 and 3 are unnamed (~) and no pin descriptions identify Emitter or Collector.
All three terminals are typed Passive. This is electrically usable for a transistor symbol, but it provides weak semantic/ERC information.
Required correction for the Diotec variant: pin 1 = Emitter, pin 2 = Base, pin 3 = Collector, with matching pin descriptions.
Footprint Cross-check
The footprint uses three through-hole pads in one row at 2.54 mm spacing with nominal 1.298 mm pad diameter/width and 0.79 mm drill. Diotec explicitly provides a 2.54 mm lead-pitch ordering option for this TO-92 part.
Therefore:
Pad count: correct.
Lead pitch: correct for the standard Diotec 2.54 mm option.
Pad-number mapping: compatible with Diotec E-B-C if pad 1 is emitter, pad 2 base, and pad 3 collector.
Package outline: visibly TO-92-style, not TO-18 metal-can geometry.
Mismatch: the project description and attached Microsemi/Microchip datasheet specify TO-18, so they do not match this footprint.
Attached Microsemi/Microchip Variant
The attached datasheet covers a 2N2222A associated with TO-18 / TO-206AA. Its stated maximum ratings are 50 V VCEO, 800 mA collector current, 0.5 W power dissipation, and -65 to +200 °C junction/storage range.
These values explain the current project description, but the TO-18 package does not match the installed TO-92 footprint.
Flagged Mismatches
Critical package mismatch: TO-18 datasheet/description vs TO-92 footprint.
Manufacturer mismatch: Microchip/Microsemi metadata vs original Diotec library identity.
Electrical-rating mismatch: 50 V / 800 mA / 500 mW metadata vs Diotec's 40 V / 600 mA / 625 mW ratings.
Incomplete pin metadata: pins 1 and 3 lack Emitter/Collector names and all terminals lack functional pin descriptions.
Potential 3D-model mismatch: a model is present, but its package identity should be visually checked after choosing the intended manufacturer variant.
Recommended Resolution
Treat this library part as the Diotec Semiconductor TO-92 variant, because that agrees with the original description and installed footprint. Update the manufacturer, description, Datasheet URL, package property, and terminal descriptions to the Diotec data. Alternatively, if the intended part is Microchip's TO-18 device, replace the footprint and 3D model with a verified TO-18/TO-206AA implementation.
An internal part-quality report has been filed for the inconsistent metadata and incomplete pin descriptions.