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SE8117T50HF

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by Ray

Seaward Elec Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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SE8117T50HF

Seaward Elec · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223

SE8117T50HF from Seaward Elec, in a SOT-223. 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 Ground return. On fixed-voltage variants (SE8117T50) this pin is ground only; on the adjustable SE8117TA variant the same pin serves as ADJ, taking a resistor divider from VOUT to set the output voltage.
2 OUT power_out Regulated 5.0V output (nominal 4.900V-5.100V). A minimum 4.7µF capacitor (0.15Ω ≤ ESR ≤ 0.5Ω) should be connected from this pin to ground for stability; 22µF is recommended for improved transient and PSRR performance. The SOT-223 tab is internally connected to this pin.
3 IN power_in Regulator input supply. Must be at least 1.3V (typ. dropout 1.2V @ 0.5A) higher than VOUT for proper regulation; absolute maximum 18V. A minimum 4.7µF capacitor (0.15Ω ≤ ESR ≤ 0.5Ω) is recommended between this pin and ground to prevent input sag during load transients.

Key specifications

Parameter Value
Manufacturer Seaward Elec
Package SOT-223
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • SE8117T50-HF-5.0V
  • SE8117J33-LF-3.3V

The extractor listed these alongside SE8117T50HF, but they are different parts with different electrical characteristics. Do not order them as substitutes.

  • SE8117JA-LF-ADJ

CAD (KiCad official)

  • Symbol: SE8117T50HF
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Seaward Elec datasheet (9 pp, sha256 23ae86778a865694, 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