JRC4558D from UMW, 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	OUT1	output	Output of op-amp A. Drives loads down to 2 kΩ with ±13 V typical output swing on ±15 V supplies; short-circuit current 40-80 mA.
2	IN1-	input	Inverting input of op-amp A. Typical input bias current 25 nA, input offset voltage 2 mV (Rs < 10 kΩ).
3	IN1+	input	Non-inverting (in-phase) input of op-amp A. Common-mode input voltage range typically ±14 V on ±15 V supplies.
4	VEE	power_in	Negative supply rail. Rated to −18 V max; typical operation at −15 V. Supply current 3.5 mA typical (both amplifiers).
5	IN2+	input	Non-inverting (in-phase) input of op-amp B. Common-mode input voltage range typically ±14 V on ±15 V supplies.
6	IN2-	input	Inverting input of op-amp B. Typical input bias current 25 nA, input offset voltage 2 mV (Rs < 10 kΩ).
7	OUT2	output	Output of op-amp B. Drives loads down to 2 kΩ with ±13 V typical output swing on ±15 V supplies; short-circuit current 40-80 mA.
8	VCC	power_in	Positive supply rail. Rated to +18 V max; typical operation at +15 V. Bypass to VEE with a local decoupling capacitor.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

JRC4558D

CAD (KiCad official)

Symbol: JRC4558D
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
`jrc4558d.step`	122 KB	You want the bare part, or you mark your own boards.
`jrc4558d-etched.step`	2.0 MB	You want the part with `JRC4558D` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 478 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 (9 pp, sha256 fea0f3600e8f1c74, 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