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SE8550K2-HF
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Seaward Elec Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+47@@ -0,0 +1,47 @@+# SE8550K2-HF++**Seaward Elec** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3++SE8550K2-HF from Seaward Elec, in a SOT-89-3. 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 | Device ground reference. Connect to system ground with a low-impedance return path; input and output decoupling capacitor returns should terminate here. |+| 2 | VIN | power_in | Power supply input. Operating range VOUT+1 V to 35 V (absolute max 40 V). Requires a 1 µF ceramic input capacitor placed close to the pin. |+| 3 | VOUT | power_out | Regulated output voltage (5.0 V fixed for this SKU), rated ≥200 mA with typical 600 mV dropout at 200 mA. Requires a ≥1 µF (10 µF recommended) ceramic output capacitor placed close to the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Seaward Elec |+| Package | SOT-89-3 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `SE8550K2-HF`+- `SE8550K2-HFSE8550K1-HF`+- `SE8550K2-HFSE8550X1-HF`+- `SE8550K2-HFSE8550X2-HF`+- `SE8550K2-HFSE8550L1-HF`+- `SE8550K2-HFSE8550L2-HF`++## CAD (KiCad official)++- Symbol: `SE8550K2-HF`+- Footprint: `Package_TO_SOT_SMD:SOT-89-3`+- 3D model: SOT-89-3 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Seaward Elec datasheet](docs/se8550k2-hf-datasheet.pdf) (10 pp, sha256 `0cbe3738392b321a`, 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/se8550k2-hf-datasheet.pdf)
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