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SCJT1117B-1.2

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Changjing Linear Voltage Regulators (LDO), SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SCJT1117B-1.2

Changjing · Linear Voltage Regulators (LDO) · SOT-223

SCJT1117B-1.2 from Changjing, in a SOT-223. 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 ADJ/GND passive Adjust pin on the adjustable version (set output voltage with R1/R2 divider) and ground on the fixed-voltage versions such as the 1.2V part.
2 OUTPUT power_out Regulated output voltage pin (1.2V typ. for SCJT1117B-1.2, 1A output current capability, with 22µF tantalum output capacitor in the typical application).
3 IN power_in Input supply pin, maximum input voltage 15V per recommended operating conditions (20V per maximum ratings), with 10µF tantalum input capacitor in the typical application.

Key specifications

Parameter Value
Manufacturer Changjing
Package SOT-223
Category Power Management
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
Output Voltage VO 1.176 1.2 1.224 V IOUT=10mA, VIN=3.2V, TJ=25℃ 3
Output Voltage (full load/line range) VO 1.17 1.2 1.23 V 10mA≤IOUT≤1A, 2.7V≤VIN≤12V 3
Line Regulation LNR 0.03 0.2 %/V IOUT=10mA, 1.5V≤VIN-VOUT≤8.8V 3
Load Regulation LDR 2 8 mV VIN-VOUT=1.5V, 10mA≤IOUT≤1A 3
Quiescent Current Iq 10 mA VIN=VOUT+1.25V 3
Input Voltage (absolute maximum) Vi 20 V 2
Storage Temperature Tstg -55 150 ℃ 2
Lead Temperature TL 260 ℃ Soldering, 10s 2
ESD Voltage (Machine Model) VESD 400 V 2
Junction Temperature (maximum ratings) Tj -25 125 ℃ 2
Input Voltage (recommended) Vi 15 V 2
Operating Junction Temperature Tj -25 125 ℃ 2
Thermal Resistance Junction to Ambient RθJA 10 ℃/W 2
Dropout Voltage VD 1.3 V ΔVREF=1%, IOUT=1.0A 3
Ripple Rejection RR 60 dB f=120Hz, COUT=22μF Tantalum, VIN-VOUT=3V, IOUT=1A 3

CAD (KiCad official)

  • Symbol: SCJT1117B-1.2
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: scjt1117b-1-2-etched.step / scjt1117b-1-2-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); scjt1117b-1-2.step / scjt1117b-1-2.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (7 pp, sha256 fd37c845798118f3, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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