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BL9161G-12BPRT

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BL(Shanghai Belling) Linear Voltage Regulators (LDO), SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower supply chipbl9161g-12bprtfactory-2.0.0extractor-text

Verified BL9161G-12BPRT

by Ray · last 5 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

5 Nov 2026RayPublished by the parts factory: tier lcsc, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: BL9161G-12BPRT · SOT-23-3 · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 12-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: SOT-23-3
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-k6u_4tte/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 3 pins = 3 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 3 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ bl9161g-12bprt.kicad_sym✓ bl9161g-12bprt.kicad_mod✓ bl9161g-12bprt.step
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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

markdown

BL9161G-12BPRT

BL(Shanghai Belling) · Linear Voltage Regulators (LDO) · SOT-23-3

BL9161G-12BPRT from BL(Shanghai Belling), in a SOT-23-3. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 GND power_in Ground pin of the SOT23-3 package, which the datasheet asks to be returned to a clean analog ground and to be the only point where the VIN and VOUT ground planes connect.
2 VOUT power_out Regulated output of the BL9161G-1.2V variant, specified at 1.2V with ±2% output voltage accuracy and capable of 300mA output current.
3 VIN power_in Power input with a wide operating range of 2.2V to 6V, as stated in the electrical characteristics.

Key specifications

Parameter Value
Manufacturer BL(Shanghai Belling)
Package SOT-23-3
Category Power Supply Chip
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Input Voltage VIN 2.2 6 V 4
Output Voltage Accuracy VOUT -2 2 % VIN=Vout+1V, IOUT=1mA 4
Current Limit ILIM 360 450 mA RLOAD=1 4
Quiescent Current IQ 70 110 µA VEN>1.2V, IOUT=0mA 4
Dropout Voltage VDROP 135 200 mV IOUT=200mA, VOUT=3.3V 4
Dropout Voltage VDROP 205 300 mV IOUT=300mA, VOUT=3.3V 4
Line Regulation ΔVLINE 0.02 0.17 %/V VIN=Vout+1V to 5.5V, IOUT=1mA 4
Load Regulation ΔVLOAD 20 mV 1mA<IOUT<300mA 4
Output Voltage Temperature Coefficient TCVOUT -60 60 ppm/℃ IOUT=1mA 4
Logic Low Threshold (EN, shutdown) VIL 0.4 V VIN=3V to 5.5V, Shutdown 4
Logic High Threshold (EN, start up) VIH 1.2 V VIN=3V to 5.5V, Start up 4
Standby Current ISTBY 0.01 1 µA VEN=GND, Shutdown 4
EN Input Bias Current IIBSD 2 µA VEN=GND or VIN 4
Output Noise Voltage eNO 180 VRMS 10Hz to 100KHz, IOUT=100mA 4
Power Supply Rejection Ratio PSRR -75 dB f=217Hz, IOUT=10mA 4
Power Supply Rejection Ratio PSRR -71 dB f=1KHz, IOUT=10mA 4
Power Supply Rejection Ratio PSRR -55 dB f=10KHz, IOUT=10mA 4
Thermal Shutdown Temperature TSD 170 ℃ Shutdown, Temp increasing 4
Thermal Shutdown Hysteresis TSDHY 30 ℃ 4
Input Supply Voltage VIN -0.3 6 V 2
EN Pin Input Voltage -0.3 V Maximum printed as VIN 2
Output Voltages -0.3 V Maximum printed as VIN+0.3V 2
Output Current 300 mA 2
Maximum Junction Temperature 150 °C 2
Storage Temperature Range -65 125 °C 2
Lead Temperature 300 °C Soldering, 10s 2
Operating Temperature Range -40 85 °C Specs assured by design over -40 to 85; guaranteed 0 to 70 (Note 2) 2
Maximum Operating Junction Temperature TJ(MAX) 125 °C Maximum operating junction temperature per thermal considerations 7

CAD (KiCad official)

  • Symbol: BL9161G-12BPRT
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: bl9161g-12bprt-etched.step / bl9161g-12bprt-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl9161g-12bprt.step / bl9161g-12bprt.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: BL(Shanghai Belling) datasheet (12 pp, sha256 9b21bb265db74e5b, retrieved 2026-11-05, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF