AP4310AMTR-G1 from Diodes Incorporated, in a SOP-8. 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	OUTPUT1	output	Op Amp 1 output. Source/sink capability typ 40mA / 20mA at VCC=15V. Output swing 0 to VCC-1.5V; slew rate ~0.5 V/us; unity-gain bandwidth ~1 MHz.
2	INPUT1-	input	Op Amp 1 inverting input. Input bias current typ 20nA (max 150nA). Input voltage range -0.3 to VCC+0.3V (absolute max).
3	INPUT1+/VKA	input	Op Amp 1 non-inverting input, internally connected to the cathode of the 2.5V shunt voltage reference (VKA). Also serves as the reference output node; typical VREF=2.5V ±0.4%, cathode current 0.05 to 80mA, dynamic impedance ~0.2 ohm.
4	GND	power_in	Device ground / shunt regulator anode return.
5	INPUT2+	input	Op Amp 2 non-inverting input (uncommitted, for current control). Input voltage range 0 to VCC-1.5V; input bias current typ 20nA.
6	INPUT2-	input	Op Amp 2 inverting input (uncommitted). Input bias current typ 20nA (max 150nA); input offset current typ 2nA.
7	OUTPUT2	output	Op Amp 2 output. Source/sink typ 40mA / 20mA at VCC=15V. Output swing 0 to VCC-1.5V; slew rate ~0.5 V/us; unity-gain bandwidth ~1 MHz.
8	VCC	power_in	Positive supply voltage. Operating range 3V to 36V; absolute max 40V. Total quiescent current (excluding reference) ~0.15mA at 5V, ~0.20mA at 30V.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	SOP-8
Category	Op-amp/Cmp
Pins	8

Ordering variants

AP4310AMTR-G1
AP4310AMTR-G1AM-G1

CAD (KiCad official)

Symbol: AP4310AMTR-G1
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ap4310amtr-g1.step`	122 KB	You want the bare part, or you mark your own boards.
`ap4310amtr-g1-etched.step`	2.2 MB	You want the part with `AP4310AMTR-G1` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 573 faces against 147 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 (8 pp, sha256 11f2529237431886, 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