BRCL3130MC from Foshan Blue Rocket Elec, in a SOT-23. 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	VM	input	Negative terminal of the charger / current-sense input. Internal FET switch connects this terminal to GND during normal operation. Used to detect overcurrent, load short-circuit, and charger presence. Absolute max: -6.0 V to +10 V.
2	VDD	power_in	Power supply pin, tied to battery positive (BAT+) through a 100Ω series resistor with a 0.1µF decoupling cap to GND. Operating range implied by detection thresholds (~2.0-4.35 V); absolute max -0.3 to +6.0 V.
3	GND	power_in	Ground reference; connect to the negative terminal of the battery cell (BAT-).

Key specifications

Parameter	Value
Manufacturer	Foshan Blue Rocket Elec
Package	SOT-23
Category	PMIC
Pins	3

CAD (KiCad official)

Symbol: BRCL3130MC
Footprint: Package_TO_SOT_SMD:SOT-23
3D model: SOT-23 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`brcl3130mc.step`	59 KB	You want the bare part, or you mark your own boards.
`brcl3130mc-etched.step`	2.0 MB	You want the part with `BRCL3130MC` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 474 faces against 69 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: Foshan Blue Rocket Elec datasheet (12 pp, sha256 660d9253cedfb8c3, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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