MCP6031T-E from Microchip, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	VOUT	output	Analog output of the op amp. Low-impedance voltage source, rail-to-rail output swing (typ. within ~10 mV of VSS/VDD with RL = 50 kOhm to VDD/2).
2	VSS	power_in	Negative power supply pin. Typically tied to ground in single-supply operation. VDD - VSS must be 1.8 V to 5.5 V (absolute max 7.0 V).
3	VIN+	input	Non-inverting analog input. High-impedance CMOS input with low bias current (typ. +/-1 pA at 25 C). Common-mode range extends 0.3 V beyond both supply rails.
4	VIN-	input	Inverting analog input. High-impedance CMOS input with low bias current (typ. +/-1 pA at 25 C). Common-mode range extends 0.3 V beyond both supply rails.
5	VDD	power_in	Positive power supply pin. 1.8 V to 5.5 V above VSS. A local 0.01-0.1 uF bypass capacitor within 2 mm is recommended, plus a bulk 1 uF within 100 mm.

Key specifications

Parameter	Value
Manufacturer	Microchip
Package	SOT-23-5
Category	Op-amp/Cmp
Pins	5

Ordering variants

Same part, different packaging or reel option.

MCP6031T-EE/OT
MCP6031T-E/OT
MCP6031T-EE/SN
MCP6031T-E/SN
MCP6031T-EE/MS
MCP6031T-E/MS
MCP6031T-EE/MNY
MCP6031T-E/MNY

CAD (KiCad official)

Symbol: MCP6031T-E
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`mcp6031t-e.step`	85 KB	You want the bare part, or you mark your own boards.
`mcp6031t-e-etched.step`	1.8 MB	You want the part with `MCP6031T-E` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 441 faces against 102 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Microchip datasheet (34 pp, sha256 02bc216237cb3668, retrieved 2026-08-17, tier: manufacturer)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF