OP07CDR from Texas Instruments, in a SOIC-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	OFFSET N1	input	Offset null pin 1. Connect one end of an external 20 kΩ potentiometer here; the wiper goes to VCC+ to trim the input offset voltage.
2	IN-	input	Inverting input of the op-amp. Common-mode input voltage range ±13 V typ at VCC±=±15 V; input bias current ±1.8 nA typ.
3	IN+	input	Non-inverting input of the op-amp. Common-mode input voltage range ±13 V typ at VCC±=±15 V; input bias current ±1.8 nA typ.
4	VCC-	power_in	Negative supply rail. Operating range -3 V to -18 V (referenced to VCC+ midpoint); absolute maximum -22 V.
5	NC	unconnected	No internal connection. Leave floating or tie to any convenient net.
6	OUT	output	Op-amp output. Peak output voltage ±13 V typ into RL ≥ 10 kΩ; output may be shorted to ground or either supply indefinitely.
7	VCC+	power_in	Positive supply rail. Operating range +3 V to +18 V; absolute maximum +22 V. Also serves as the reference for the offset-null potentiometer wiper.
8	OFFSET N2	input	Offset null pin 2. Connect the other end of the external 20 kΩ potentiometer here; potentiometer wiper returns to VCC+ for offset-voltage trimming. Adjustment range ±4 mV.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-8
Category	Op-amp/Cmp
Pins	8

Ordering variants

Same part, different packaging or reel option.

OP07CDRD
OP07CDR
OP07CDRP

CAD (KiCad official)

Symbol: OP07CDR
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`op07cdr.step`	122 KB	You want the bare part, or you mark your own boards.
`op07cdr-etched.step`	1.6 MB	You want the part with `OP07CDR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 396 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: Texas Instruments datasheet (15 pp, sha256 c68e9ffdd5c60c1c, 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