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SE8650K1-HF
Public Made by Adomby adom
Seaward Elec Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownSE8650K1-HF
Seaward Elec · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
SE8650K1-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; operates from VOUT+1V up to 60V (recommended max), with a 1uF ceramic input capacitor required between VIN and GND placed close to the pin. |
| 3 | VOUT | power_out | Regulated output pin (5.0V for this part), with a recommended 10uF ceramic output capacitor (1uF minimum) placed close to the pin and output current of 200mA or more. |
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 |
|---|---|---|---|---|---|---|---|
| VIN Input Supply Voltage | VIN | 2.8 | 60 | V | 6 | ||
| Output Voltage Accuracy (1% grade) | VOUT | -1 | 1 | % | IOUT=10mA | 6 | |
| Output Voltage Accuracy (2% grade) | VOUT | -2 | 2 | % | IOUT=10mA | 6 | |
| Quiescent Current | IQ | 1.8 | 4 | μA | VIN=6V~60V | 6 | |
| Output Current | IOUT | 200 | mA | 6 | |||
| Dropout Voltage (10mA) | VDROP | 70 | mV | IOUT=10mA ∆VOUT= - VOUT *2% | 6 | ||
| Dropout Voltage (100mA) | VDROP | 700 | mV | IOUT=100mA ∆VOUT= - VOUT *2% | 6 | ||
| Load Regulation | VLR | 20 | mV | 1mA ≤ IOUT≤ 100mA | 6 | ||
| Line Regulation | VSR | 0.2 | %/V | IOUT=1mA, VIN=(VOUT +1V) to 60V | 6 | ||
| Power Supply Rejection Ratio | PSRR | 70 | dB | Vin=12V, Iout=10mA, F=1Khz, Vout=3.3V | 6 | ||
| Enable High Level | VENH | 1 | V | Enabled | 6 | ||
| Enable Low Level | VENL | 0.4 | V | Disabled | 6 | ||
| EN Current | IEN | 1 | μA | EN=0~VIN(REN=100K) | 6 | ||
| Current Limit | ILIMIT | 50 | mA | 6 | |||
| Thermal Protection | TSHDN | 150 | ℃ | 6 | |||
| Output Voltage Temperature Coefficient | TCVOUT | -17 | 17 | ppm/℃ | IOUT=10mA, -40℃≤TAMB≤100℃ | 6 | |
| 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) | JA | 165 | ℃/W | 5 | |||
| Power Consumption (SOT89) | PD | 750 | mW | 5 | |||
| Human Body Model (ESD) | 4 | kV | Human Body Model (HBM) | 5 | |||
| Charged Device Model (ESD) | 100 | V | Charged Device Model (MM) | 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 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | placed as close as possible to VIN pin, and copper trace is also recommended. | 9 |
CAD (KiCad official)
- Symbol:
SE8650K1-HF - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
se8650k1-hf-etched.step/se8650k1-hf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);se8650k1-hf.step/se8650k1-hf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Seaward Elec datasheet (13 pp, sha256
bbcc4b51e1159018, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).