component

LM3404B

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by Ray

Leiditech MOSFETs, SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componenttransistors-thyristorslm3404b
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3D Model

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Symbol & Footprint

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PCB Footprint

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Datasheet

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Contents

README

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LM3404B

Leiditech · MOSFETs · SOT-23

LM3404B from Leiditech, 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 G input Gate. Control terminal for the N-channel enhancement mode MOSFET. VGS(th) typ 1.5V (1.2V min / 2.5V max at VDS=VGS, ID=250μA). Absolute maximum VGSS = ±20V. Rated for full enhancement at VGS=10V (RDS(on) typ 29mΩ) and logic-level operation at VGS=4.5V (RDS(on) typ 45mΩ).
2 S passive Source. Reference terminal for gate drive and current return for the drain-source channel. Continuous drain-to-source diode forward current IS = 4A max; body diode VSD = 1.2V max at IS=4A, VGS=0V.
3 D passive Drain. Switched high-side terminal of the N-channel MOSFET. VDSS = 30V max (V(BR)DSS typ 32V at VGS=0V, ID=250μA). Continuous drain current ID = 4.2A at TA=25℃ (2.6A at TA=70℃); pulsed IDM = 16A.

Key specifications

Parameter Value
Manufacturer Leiditech
Package SOT-23
Category Transistors/Thyristors
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • LM3404B

CAD (KiCad official)

  • Symbol: LM3404B
  • 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: Leiditech datasheet (None pp, sha256 2db1e81a6605a692, 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