LM158DR from UMW, 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	OUTA	output	Output of amplifier A. Can source up to 40 mA typical and sink up to 20 mA typical; short-circuit current to ground ~40 mA typical at V+=15V.
2	IN-A	input	Inverting input of amplifier A. Input bias current typically 45 nA; input common-mode range extends from ground (V-) up to V+ - 1.5 V.
3	IN+A	input	Non-inverting input of amplifier A. Input bias current typically 45 nA; input common-mode range from ground to V+ - 1.5 V.
4	GND	power_in	Negative supply / ground (V-). In single-supply operation this pin is tied to ground; in split-supply operation this is the negative rail (down to -16 V relative to V+).
5	IN+B	input	Non-inverting input of amplifier B. Input bias current typically 45 nA; input common-mode range from ground to V+ - 1.5 V.
6	IN-B	input	Inverting input of amplifier B. Input bias current typically 45 nA; input common-mode range from ground to V+ - 1.5 V.
7	OUTB	output	Output of amplifier B. Can source up to 40 mA typical and sink up to 20 mA typical; short-circuit current to ground ~40 mA typical at V+=15V.
8	V+	power_in	Positive supply pin. Single supply 3 V to 32 V, or split supply ±1.5 V to ±16 V. Supply current is typically 1 mA at V+=30V and 0.5 mA at V+=5V.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

LM158DR

CAD (KiCad official)

Symbol: LM158DR
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
`lm158dr.step`	122 KB	You want the bare part, or you mark your own boards.
`lm158dr-etched.step`	1.6 MB	You want the part with `LM158DR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 398 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: UMW datasheet (11 pp, sha256 04061385d285d3c0, retrieved 2026-08-17, tier: lcsc)
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