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se8633j1-hf

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Seaward Elec Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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SE8633J1-HF

Seaward Elec · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2

SE8633J1-HF from Seaward Elec, in a TO-252-2. 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 VIN power_in Input supply pin. Recommended operating range VOUT+1V to 60V (80V absolute max). Bypass with a 1 µF ceramic (10-100 µF for live-insertion applications) placed close to the pin. In-rush spikes can push Vin up to ~50% above nominal, so size Cin's voltage rating accordingly.
2 GND power_in Device ground reference. The TO-252 exposed tab is electrically connected to this pin and provides the primary thermal path (θJA ≈ 85 °C/W, PD ≈ 1300 mW).
3 VOUT power_out Regulated 3.3V output (±1% initial accuracy for the '1' accuracy suffix). Capable of ≥200 mA; internal current limit is typically 250 mA with fold-back short-circuit protection. Recommended output capacitor is 10 µF ceramic (1 µF minimum for stability), placed close to the pin.
TAB GND power_in Exposed metal tab of the TO-252 package, electrically connected to pin 2 (GND). Solder to a copper pour to sink heat (θJA ≈ 85 °C/W).

Key specifications

Parameter Value
Manufacturer Seaward Elec
Package TO-252-2
Category PMIC
Pins 4

Ordering variants

  • SE8633J1-HF
  • SE8633J1-HFJ2-HF
  • SE8633J1-HFJ1-LF
  • SE8633J1-HFJ2-LF
  • SE8633J1-HFX1-HF
  • SE8633J1-HFX2-HF
  • SE8633J1-HFX1-LF
  • SE8633J1-HFX2-LF
  • SE8633J1-HFL1-HF
  • SE8633J1-HFL2-HF
  • SE8633J1-HFL1-LF
  • SE8633J1-HFL2-LF
  • SE8633J1-HFK1-HF
  • SE8633J1-HFK2-HF
  • SE8633J1-HFK1-LF
  • SE8633J1-HFK2-LF
  • SE8633J1-HFY1-HF
  • SE8633J1-HFY2-HF
  • SE8633J1-HFY1-LF
  • SE8633J1-HFY2-LF
  • SE8633J1-HFF1-HF
  • SE8633J1-HFF2-HF
  • SE8633J1-HFF1-LF
  • SE8633J1-HFF2-LF

CAD (KiCad official)

  • Symbol: SE8633J1-HF
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252-2 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Seaward Elec datasheet (None pp, sha256 bbcc4b51e1159018, 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

Symbol & Footprint

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PCB Footprint

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Datasheet

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