MC33078DT from STMicroelectronics, 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	Output 1	output	Op-amp A output. Class-AB output stage delivering ±14.3 V/-14.6 V swing into 10 kΩ and ~29 mA source / 37 mA sink short-circuit current.
2	Inverting input 1	input	Op-amp A inverting input (IN−). Typical bias current 250 nA, input resistance ~175 kΩ, input capacitance ~12 pF.
3	Non-inverting input 1	input	Op-amp A non-inverting input (IN+). Input common-mode range ±13 V min (±14 V typ) with ±15 V rails.
4	VCC-	power_in	Negative supply rail (V−). Shared by both op-amps. Operating range ±2.5 V to ±15 V (or single-supply up to +36 V total across VCC+/VCC−).
5	Non-inverting input 2	input	Op-amp B non-inverting input (IN+). Input common-mode range ±13 V min (±14 V typ).
6	Inverting input 2	input	Op-amp B inverting input (IN−). Typical bias current 250 nA.
7	Output 2	output	Op-amp B output. Class-AB output stage; large output swing and symmetrical source/sink currents.
8	VCC+	power_in	Positive supply rail (V+). Shared by both op-amps. Typical supply current 4 mA (5.5 mA max). Absolute max ±18 V (or 36 V single-supply).

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

MC33078DTD
MC33078DT
MC33078DTN

CAD (KiCad official)

Symbol: MC33078DT
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
`mc33078dt.step`	122 KB	You want the bare part, or you mark your own boards.
`mc33078dt-etched.step`	2.1 MB	You want the part with `MC33078DT` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 513 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: STMicroelectronics datasheet (15 pp, sha256 51b16bf21965c6dd, 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