BL9161G-18BARN
Public Unreviewedby Ray
BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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README
markdownBL9161G-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-18BARNBL9161G-18BARNURNBL9161G-18BARNDRNBL9161G-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 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).