# SE8650K2-HF

**Seaward Elec** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

SE8650K2-HF from Seaward Elec, in a SOT-89-3. 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 | GND | power_in | Ground pin. |
| 2 | VIN | power_in | Input supply pin, operating from VOUT+1V up to 65V (absolute maximum 80V), with a 1uF ceramic capacitor required close to VIN and GND. |
| 3 | VOUT | power_out | Regulated output pin, with a recommended 10uF ceramic output capacitor (1uF minimum) placed close to the pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Seaward Elec |
| Package | SOT-89-3 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Input Supply Voltage (absolute maximum) | VIN |  |  | 80 | V |  | 5 |
| Enable Voltage (absolute maximum) | EN |  |  | 80 | V |  | 5 |
| Output Voltage to GND (absolute maximum) | VOUT-GND |  |  | 6 | V |  | 5 |
| Output Voltage to VIN (absolute maximum) | VOUT-VIN | -75 |  |  | V |  | 5 |
| Operating Temperature (absolute maximum) | TA | -40 |  | 105 | °C |  | 5 |
| Storage Temperature | TSTG | -40 |  | 150 | °C |  | 5 |
| Maximum Junction Temperature | TJ |  |  | 150 | °C |  | 5 |
| Lead Temperature (Soldering) | TLEAD |  |  | 260 | °C | 10 seconds | 5 |
| Thermal Resistance, Junction-to-Ambient (SOT89) | θJA |  | 165 |  | ℃/W | SOT89 | 5 |
| Power Consumption (SOT89) | PD |  |  | 750 | mW | SOT89 | 5 |
| Human Body Model ESD rating | HBM |  |  | 4 | kV |  | 5 |
| Charged Device Model ESD rating | CDM |  |  | 100 | V |  | 5 |
| Input Supply Voltage (recommended operating) | VIN |  |  | 60 | V |  | 5 |
| Operating Temperature (recommended operating) | TA | -20 |  | 85 | °C |  | 5 |
| Lead Temperature (Soldering) (recommended operating) | TLEAD |  |  | 260 | °C | 10 seconds | 5 |
| Output Voltage Accuracy | VOUT | -1 |  | 1 | % | IOUT=10mA | 6 |
| Output Voltage Accuracy | VOUT | -2 |  | 2 | % |  | 6 |
| Quiescent Current | IQ |  | 1.8 | 4 | μA | VIN=6V~60V | 6 |
| Enable High Level | VENH | 1 |  |  | V | Enabled | 6 |
| Enable Low Level | VENL |  |  | 0.4 | V | Disabled | 6 |
| Output Voltage Temperature Coefficient | TCVOUT | -17 |  | 17 | ppm/℃ | IOUT=10mA -40℃≤TAMB≤100℃ | 6 |

## CAD (KiCad official)

- Symbol: `SE8650K2-HF`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files: `se8650k2-hf-etched.step` / `se8650k2-hf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `se8650k2-hf.step` / `se8650k2-hf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Seaward Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588907129600692224) (13 pp, sha256 `bbcc4b51e1159018`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/se8650k2-hf-datasheet.pdf)