AS321KTR-G1 from Diodes Incorporated, 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	INPUT+	input	Non-inverting analog input of the op-amp. Input common-mode range is 0V to VCC-1.5V; can withstand up to +36V independent of VCC. Typical input bias current 20nA.
2	VEE	power_in	Negative supply / ground reference. Tie to GND for single-supply operation (3V to 36V VCC) or to a negative rail for dual-supply operation (±1.5V to ±18V). Total supply span VCC-VEE must not exceed 40V.
3	INPUT-	input	Inverting analog input of the op-amp. Same input specifications as INPUT+: 0V to VCC-1.5V common-mode range, 20nA typical bias current, 5nA typical offset current.
4	OUTPUT	output	Op-amp output. Sources up to 40mA typ, sinks up to 15mA typ. Short-circuit current to ground limited to ~40mA typ (60mA max) at VCC=15V. Output swings within ~5mV of VEE at VCC=5V, RL=10kΩ.
5	VCC	power_in	Positive supply rail. Operating range 3V to 36V single-supply. Absolute maximum VCC-VEE = 40V. Supply current 0.35mA typ at VCC=5V, 0.45mA typ at VCC=30V.

Key specifications

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

Ordering variants

AS321KTR-G1
AS321KTR-G1KTR-E1

CAD (KiCad official)

Symbol: AS321KTR-G1
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
`as321ktr-g1.step`	85 KB	You want the bare part, or you mark your own boards.
`as321ktr-g1-etched.step`	1.9 MB	You want the part with `AS321KTR-G1` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 479 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: Diodes Incorporated datasheet (10 pp, sha256 a36bb8a9d282efac, 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