component
KY2305A
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
markdownKY2305A
KY · MOSFETs · SOT-23
KY2305A 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 | G | input | Gate; gate-source voltage limited to ±12 V, with threshold of -0.4 V min to -1 V max at ID=-250µA. |
| 2 | S | passive | Source of the P-channel MOSFET; body diode forward voltage is -0.9 V typ (-1.2 V max) at IS=-3.3A. |
| 3 | D | passive | Drain; drain-source voltage rated -20 V and continuous drain current -4.1 A (pulsed -16 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 | VDS | -20 | V | 1 | |||
| Gate-source voltage | VGS | -12 | 12 | V | 1 | ||
| Continuous drain current | ID | -4.1 | A | 1 | |||
| Pulsed drain current | IDM | -16 | A | 1 | |||
| Maximum power dissipation | PD | 0.83 | W | 1 | |||
| Thermal resistance, junction to ambient | RθJA | 150 | ℃/W | t ≤5s | 1 | ||
| Junction temperature | TJ | 150 | ℃ | 1 | |||
| Storage temperature | Tstg | -55 | 150 | ℃ | 1 | ||
| Drain-source breakdown voltage | V(BR)DSS | -20 | -21.5 | V | VGS = 0V, ID =-250µA | 2 | |
| Gate-source threshold voltage | VGS(th) | -0.4 | -0.7 | -1 | V | VDS =VGS, ID =-250µA | 2 |
| Gate-source leakage | IGSS | -100 | 100 | nA | VDS =0V, VGS =±10V | 2 | |
| Zero gate voltage drain current | IDSS | -1 | µA | VDS =-16V, VGS =0V | 2 | ||
| Drain-source on-state resistance | RDS(on) | 35 | 45 | mΩ | VGS =-4.5V, ID =-3.5A | 2 | |
| Drain-source on-state resistance | RDS(on) | 38 | 70 | mΩ | VGS =-2.5V, ID =-3A | 2 | |
| Drain-source on-state resistance | RDS(on) | 50 | 90 | mΩ | VGS =-1.8V, ID =-2A | 2 | |
| Body diode voltage | VSD | -0.9 | -1.2 | V | IS=-3.3A | 2 | |
| Total gate charge | Qg | 4.5 | 9 | nC | VDS=-4V, VGS=-2.5V, ID=-4.1A | 2 | |
| Turn-on delay time | td(on) | 13 | 20 | nS | VDS=-4V, RL=1.2Ω, ID =-3.3A, VGEN=-4.5V, RG=1Ω | 2 | |
| Rise time | tr | 35 | 53 | nS | VDS=-4V, RL=1.2Ω, ID =-3.3A, VGEN=-4.5V, RG=1Ω | 2 | |
| Turn-off delay time | td(off) | 32 | 48 | nS | VDS=-4V, RL=1.2Ω, ID =-3.3A, VGEN=-4.5V, RG=1Ω | 2 | |
| Fall time | tf | 10 | 20 | nS | VDS=-4V, RL=1.2Ω, ID =-3.3A, VGEN=-4.5V, RG=1Ω | 2 |
CAD (KiCad official)
- Symbol:
KY2305A - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
ky2305a-etched.step/ky2305a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ky2305a.step/ky2305a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: KY datasheet (6 pp, sha256
3473df775016ea72, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).