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SCJA1117B-3.3-A
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Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3L. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+42@@ -0,0 +1,42 @@+# SCJA1117B-3.3-A++**Changjing** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3L++SCJA1117B-3.3-A from Changjing, in a SOT-89-3L. 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 ADJ variant this pin becomes the ADJ feedback input; on the SCJA1117B-3.3-A fixed version it is tied to system ground. |+| 2 | OUTPUT | power_out | Regulated 3.3V output. Delivers up to 1A with typical dropout of 1.3V. Requires a 10uF tantalum output capacitor (C2) to ground for stability. |+| 3 | IN | power_in | Unregulated input supply. Operating range 4.8V to 12V for the -3.3-A variant (Vin absolute max 20V). Requires a 10uF tantalum bypass capacitor (C1) to ground. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Changjing |+| Package | SOT-89-3L |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `SCJA1117B-3.3-A`++## CAD (KiCad official)++- Symbol: `SCJA1117B-3.3-A`+- Footprint: `Package_TO_SOT_SMD:SOT-89-3`+- 3D model: SOT-89-3L (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Changjing datasheet](docs/scja1117b-3-3-a-datasheet.pdf) (9 pp, sha256 `914cf4603359796e`, 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/scja1117b-3-3-a-datasheet.pdf)
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