component

BL9161G-18BARN

Public Made by Adom

by adom

BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs bl9161g-18barn: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 2mo ago
bl9161g-18barn-etched.fit.json bl9161g-18barn: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
bl9161g-18barn-etched.glb bl9161g-18barn: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC b… · Ray 14d ago
bl9161g-18barn-etched.step bl9161g-18barn: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC b… · Ray 14d ago
bl9161g-18barn.glb Publish 0.1.0 · Ray 2mo ago
bl9161g-18barn.kicad_mod Publish 0.1.0 · Ray 2mo ago
bl9161g-18barn.kicad_sym Publish 0.1.0 · Ray 2mo ago
bl9161g-18barn.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray 2mo ago
bl9161g-18barn.step Publish 0.1.0 · Ray 2mo ago
package.json Publish 0.2.0 · Ray 2mo ago
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 2mo ago
page.json bl9161g-18barn: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC b… · Ray 14d ago
README.md bl9161g-18barn: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 1mo ago

BL9161G-18BARN

BL Shanghai Belling · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

BL9161G-18BARN from BL Shanghai Belling, in a SOT-23-5. 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 VIN power_in Power input voltage. Operating range 2.2V to 6V (absolute max 6V). Bypass with a 1µF ceramic capacitor to GND placed close to the pin.
2 GND power_in Device ground reference for the regulator and internal control circuitry.
3 EN input Chip enable input, active high. Drive above VIH=1.2V to enable the regulator; pull below VIL=0.4V (or leave floating) to enter shutdown. This pin has an internal pull-down resistor (A-suffix ordering option), so the LDO defaults to shutdown when EN is left open.
4 NC unconnected No internal connection. Leave floating or tie to GND for mechanical strength.
5 VOUT power_out Regulated output voltage, fixed 1.8V ±2% (18B suffix). Delivers up to 300mA with 205mV typical dropout at 300mA. Requires a ≥2.2µF ceramic output capacitor for 1.8V-option stability (per application hint).

Key specifications

Parameter Value
Manufacturer BL Shanghai Belling
Package SOT-23-5
Category PMIC
Pins 5

Ordering variants

  • BL9161G-18BARN
  • BL9161G-18BARNURN
  • BL9161G-18BARNDRN
  • BL9161G-18BARNRT

CAD (KiCad official)

  • Symbol: BL9161G-18BARN
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: bl9161g-18barn-etched.step / bl9161g-18barn-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl9161g-18barn.step / bl9161g-18barn.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
bl9161g-18barn.step 85 KB You want the bare part, or you mark your own boards.
bl9161g-18barn-etched.step 2.4 MB You want the part with BL9161G-18BARN already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 603 faces against 102 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 (12 pp, sha256 74f47540de0b9365, 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