component
KY3400
Public Made by Adomby adom
KY MOSFETs, SOT-23. 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
markdownKY3400
KY · MOSFETs · SOT-23
KY3400 from KY, in a SOT-23. 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 30 V N-channel MOSFET, rated for gate-source voltage VGSS of ±12 V. |
| 2 | SOURCE | passive | Source terminal, the reference for the ±12 V gate-source rating and the 30 V drain-source rating (VDSS). |
| 3 | DRAIN | passive | Drain terminal, rated for drain-source voltage VDSS of 30 V and continuous drain current ID of 5.8 A (pulsed IDM 30 A). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | KY |
| Package | SOT-23 |
| 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 | 1 | |||
| Pulsed Drain Current | IDM | 30 | A | note1: Pulse Width < 300µs, Duty Cycle ≤2% | 1 | ||
| Power Dissipation | PD | 0.35 | W | 1 | |||
| Thermal Resistance, Junction to Ambient | RθJA | 357 | ℃/W | 1 | |||
| Operating and Storage Temperature Range | TSTG | -55 | 150 | ℃ | 1 | ||
| Operating and Storage Temperature Range (junction) | TJ | 150 | ℃ | 1 | |||
| Drain-Source Breakdown Voltage | V(BR)DSS | 30 | 31.5 | V | VGS = 0V, ID = 250μA | 2 | |
| Zero Gate Voltage Drain Current | IDSS | 1 | μA | VDS = 30V, VGS = 0V, TJ = 25℃ | 2 | ||
| Gate to Body Leakage Current | IGSS | -100 | 100 | nA | VGS = ±12V, VDS = 0V | 2 | |
| Gate Threshold Voltage | VGS(th) | 0.7 | 1 | 1.4 | V | VDS = VGS, ID = 250μA | 2 |
| Static Drain-Source On-Resistance | RDS(on) | 21 | 33 | mΩ | VGS = 10V, ID = 5A | 2 | |
| Static Drain-Source On-Resistance | RDS(on) | 25 | 39 | mΩ | VGS = 4.5V, ID = 4A | 2 | |
| Static Drain-Source On-Resistance | RDS(on) | 36 | 60 | mΩ | VGS = 2.5V, ID = 3A | 2 | |
| Drain to Source Diode Forward Voltage | VSD | 0.8 | 1 | V | VGS = 0V, ISD = 1A, TJ = 25℃ | 2 | |
| Input Capacitance | Ciss | 1155 | pF | VDS = 15V, VGS = 0V, f = 1.0MHz | 2 | ||
| Turn-On Delay Time | td(on) | 5 | ns | VGS = 10V, VDS = 15V, RL = 2.7Ω, RGEN = 3Ω | 2 | ||
| Turn-On Rise Time | tr | 7 | ns | VGS = 10V, VDS = 15V, RL = 2.7Ω, RGEN = 3Ω | 2 | ||
| Turn-Off Delay Time | td(off) | 40 | ns | VGS = 10V, VDS = 15V, RL = 2.7Ω, RGEN = 3Ω | 2 | ||
| Turn-Off Fall Time | tf | 6 | ns | VGS = 10V, VDS = 15V, RL = 2.7Ω, RGEN = 3Ω | 2 |
CAD (KiCad official)
- Symbol:
KY3400 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
ky3400-etched.step/ky3400-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ky3400.step/ky3400.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: KY datasheet (5 pp, sha256
5d9b0374c7af0a9d, 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).