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SE8633X2-HF

Public Made by Adom

by adom

Seaward Elec Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SE8633X2-HF

Seaward Elec · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23

SE8633X2-HF from Seaward Elec, in a SOT-23. 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 VOUT power_out Regulated output pin (3.3V for the SE8633 option), with a recommended 10uF ceramic output capacitor placed close to the pin (1uF minimum).
3 VIN power_in Input supply pin, operating from VOUT+1V up to 60V recommended (80V absolute maximum), with a 1uF input capacitor placed close to the pin.

Key specifications

Parameter Value
Manufacturer Seaward Elec
Package SOT-23
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 VIN 80 V 5
Enable Voltage EN 80 V 5
Output Voltage TO GND VOUT-GND 6 V 5
Output Voltage TO VIN VOUT-VIN -75 V 5
Operating Temperature TA -40 105 °C 5
Storage Temperature TSTG -40 150 °C 5
Maximum Junction Temperature TJ 150 °C 5
Lead Temperature (Soldering) 10 seconds TLEAD 260 °C 10 seconds 5
ESD Human Body Model HBM 4 kV 5
ESD Charged Device Model CDM 100 V 5
Thermal Resistance, Junction-to-Ambient (SOT23-3) θJA 280 °C/W 5
Thermal Resistance, Junction-to-Ambient (SOT23-5) θJA 270 °C/W 5
Thermal Resistance, Junction-to-Ambient (SOT89) θJA 165 °C/W 5
Thermal Resistance, Junction-to-Ambient (SOP8) θJA 180 °C/W 5
Thermal Resistance, Junction-to-Ambient (TO252) θJA 85 °C/W 5
Power Consumption (SOT23-3) PD 446 mW 5
Power Consumption (SOT23-5) PD 465 mW 5
Input Supply Voltage (recommended) VIN 60 V 5
Operating Temperature (recommended) TA -20 85 °C 5
Lead Temperature (Soldering) 10 seconds (recommended) TLEAD 260 °C 10 seconds 5
Input Supply Voltage VIN 2.8 60 V 6
Output Voltage Accuracy VOUT -1 1 % IOUT=10mA 6
Output Voltage Accuracy (second row) VOUT -2 2 % IOUT=10mA 6
Quiescent Current IQ 1.8 4 μA VIN=6V~60V 6
Dropout Voltage VDROP 70 mV IOUT=10mA, ΔVOUT= - VOUT *2% 6
Dropout Voltage VDROP 700 mV IOUT=100mA, ΔVOUT= - 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
Thermal Protection TSHDN 150 °C 6
Temperature Coefficient of Output Voltage TCVOUT 17 ppm/°C IOUT=10mA, -40℃≤TAMB≤100℃ 6

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: SE8633X2-HF
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: se8633x2-hf-etched.step / se8633x2-hf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); se8633x2-hf.step / se8633x2-hf.glb are the bare package body.

Provenance

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

  • Datasheet: Seaward Elec datasheet (13 pp, sha256 bbcc4b51e1159018, retrieved 2026-10-17, 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