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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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);scjt1117b-1-2.step/scjt1117b-1-2.glbare 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, primaryclaude-sonnet-5-5(text), consensusclaude-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).
# 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](docs/scjt1117b-1-2-datasheet.pdf) (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](docs/scjt1117b-1-2-datasheet.pdf)