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Contents

README

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2SK508G-K51-AE3-R

UTC Unisonic Tech · JFETs · SOT-23

2SK508G-K51-AE3-R from UTC Unisonic Tech, in a SOT-23. 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 S passive Source terminal of the N-channel JFET.
2 D passive Drain terminal of the N-channel JFET. Absolute maximum VDSX = 15 V (VGS = -4.0 V); max ID (DC) = 50 mA.
3 G input Gate terminal of the N-channel JFET. VGSO absolute max = -15 V; gate cut-off voltage VGS(off) typically -1.4 V.

Key specifications

Parameter Value
Manufacturer UTC Unisonic Tech
Package SOT-23
Category Transistors/Thyristors
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • 2SK508G-K51-AE3-R
  • 2SK508G-K52-AE3-R
  • 2SK508G-K53-AE3-R
  • 2SK508L-K51-AE3-R
  • 2SK508L-K52-AE3-R
  • 2SK508L-K53-AE3-R

CAD (KiCad official)

  • Symbol: 2SK508G-K51-AE3-R
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: UTC Unisonic Tech datasheet (3 pp, sha256 f730d6a9833e481a, 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