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SCJT1117B-3.3
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Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+48@@ -0,0 +1,48 @@+# SCJT1117B-3.3++**Changjing** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223++SCJT1117B-3.3 from Changjing, in a SOT-223. 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 | GND | power_in | Ground reference for the fixed-output regulator. On the SCJT1117B-ADJ variant this pin serves as the ADJ feedback input instead; on fixed-voltage parts such as the 3.3V variant it is the device ground return. |+| 2 | OUTPUT | power_out | Regulated 3.3V output. Supplies up to 1A of load current with 1.3V typical dropout. Requires a minimum 10µF tantalum bypass capacitor to ground for transient response and loop stability. |+| 3 | IN | power_in | Unregulated input supply, absolute max 20V (recommended operating max 15V). For the 3.3V variant, VIN must be ≥4.8V at full 1A load. A 10µF bypass capacitor to ground near this pin is recommended. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Changjing |+| Package | SOT-223 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `SCJT1117B-3.3-3.3`+- `SCJT1117B-3.3-ADJ`+- `SCJT1117B-3.3-1.2`+- `SCJT1117B-3.3-1.5`+- `SCJT1117B-3.3-1.8`+- `SCJT1117B-3.3-2.5`+- `SCJT1117B-3.3-5.0`++## CAD (KiCad official)++- Symbol: `SCJT1117B-3.3`+- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`+- 3D model: SOT-223 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Changjing datasheet](docs/scjt1117b-3-3-datasheet.pdf) (10 pp, sha256 `66798862ef522525`, 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](docs/scjt1117b-3-3-datasheet.pdf)
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