component
KYL3400
Public Made by Adomby adom
KY MOSFETs, SOT-23-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownKYL3400
KY · MOSFETs · SOT-23-3L
KYL3400 from KY, in a SOT-23-3L. 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 | GATE | input | Gate terminal of the N-channel MOSFET, rated for a gate-source voltage VGSS of ±12 V. |
| 2 | SOURCE | passive | Source terminal of the N-channel MOSFET, the reference for VGSS and for the body-diode forward voltage VSD, which is 1.2 V max at IS = 5.8 A and VGS = 0 V. |
| 3 | DRAIN | passive | Drain terminal of the N-channel MOSFET, rated for a drain-source voltage VDSS of 30 V and a continuous drain current ID of 5.8 A at Ta = 25 °C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | KY |
| Package | SOT-23-3L |
| Category | Transistors/Thyristors |
| 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 |
|---|---|---|---|---|---|---|---|
| Drain-Source Voltage | VDSS | 30 | V | 1 | |||
| Gate-Source Voltage | VGSS | -12 | 12 | V | 1 | ||
| Continuous Drain Current | ID | 5.8 | A | Ta= 25℃ | 1 | ||
| Continuous Drain Current | ID | 3.8 | A | Ta= 100℃ | 1 | ||
| Pulsed Drain Current | IDM | 23.2 | A | note1 | 1 | ||
| Power Dissipation | PD | 1.36 | W | 1 | |||
| Thermal Resistance, Junction to Ambient | RθJA | 92 | ℃/W | 1 | |||
| Operating and Storage Temperature Range | TJ,TSTG | -55 | 150 | ℃ | 1 | ||
| Drain-Source Breakdown Voltage | V(BR)DSS | 30 | V | VGS=0V, ID=250μA | 2 | ||
| Zero Gate Voltage Drain Current | IDSS | 1 | μA | VDS=30V, VGS=0V | 2 | ||
| Gate to Body Leakage Current | IGSS | -100 | 100 | nA | VDS=0V, VGS= ±12V | 2 | |
| Gate Threshold Voltage | VGS(th) | 0.5 | 0.9 | 1.4 | V | VDS=VGS, ID=250μA | 2 |
| Static Drain-Source on-Resistance | RDS(on) | 19 | 26 | mΩ | VGS=10V, ID=4.2A | 2 | |
| Static Drain-Source on-Resistance | RDS(on) | 23 | 32 | mΩ | VGS=4.5V, ID=4A | 2 | |
| Static Drain-Source on-Resistance | RDS(on) | 30 | 50 | mΩ | VGS=2.5V, ID=1A | 2 | |
| Maximum Continuous Drain to Source Diode Forward Current | IS | 5.8 | A | 2 | |||
| Maximum Pulsed Drain to Source Diode Forward Current | ISM | 23.2 | A | 2 | |||
| Drain to Source Diode Forward Voltage | VSD | 1.2 | V | VGS=0V, IS=5.8A | 2 |
CAD (KiCad official)
- Symbol:
KYL3400 - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files:
kyl3400-etched.step/kyl3400-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);kyl3400.step/kyl3400.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: KY datasheet (5 pp, sha256
3a8f395f3bfe4a8c, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-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).