BL358 from BL Shanghai Belling, 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	OUT_A	output	Output of amplifier A. Class-A/AB output stage capable of sourcing up to ~50mA and sinking a few mA typical; short-circuit current to GND ~40mA.
2	-IN_A	input	Inverting input of amplifier A. High-impedance PNP input stage, typical input bias current 45nA (max 150nA), input offset current typ 3nA.
3	+IN_A	input	Non-inverting input of amplifier A. Common-mode input range from 0V (ground) up to V+ - 1.5V; must not go more than 0.3V below ground.
4	-Vs	power_in	Negative supply / ground. Connect to GND for single-supply operation or to the negative rail for dual-supply operation. Total (V+ - V-) supply range 3V to 25V (abs max 25V).
5	+IN_B	input	Non-inverting input of amplifier B. Common-mode input range from 0V (ground) up to V+ - 1.5V.
6	-IN_B	input	Inverting input of amplifier B. PNP input stage, typical input bias 45nA.
7	OUT_B	output	Output of amplifier B. Class-A/AB output stage; typical source current 50mA, output swing VOH ~23V at V+=25V with RL=2k.
8	+Vs	power_in	Positive supply pin. Operating range +3V to +25V (single or dual supply, referenced to -Vs). Typical supply current 430uA at V+=5V; absolute maximum (V+ - V-) = 25V.

Key specifications

Parameter	Value
Manufacturer	BL Shanghai Belling
Package	SOP-8
Category	Op-amp/Cmp
Pins	8

CAD (KiCad official)

Symbol: BL358
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
`bl358.step`	122 KB	You want the bare part, or you mark your own boards.
`bl358-etched.step`	1.6 MB	You want the part with `BL358` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 378 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: BL Shanghai Belling datasheet (7 pp, sha256 79144bd1de9cce24, 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