component
FS4446A
Public Made by Adomby adom
FOSAN MOSFETs, SOP-8. 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
markdownFS4446A
FOSAN · MOSFETs · SOP-8
FS4446A from FOSAN, in a SOP-8. 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 | S | passive | Source of the N-channel MOSFET, tied internally with pins 2 and 3. |
| 2 | S | passive | Source of the N-channel MOSFET, tied internally with pins 1 and 3. |
| 3 | S | passive | Source of the N-channel MOSFET, tied internally with pins 1 and 2. |
| 4 | G | input | Gate of the N-channel MOSFET; VGS maximum ±20 V and threshold VGS(th) 1.0 V min, 1.5 V typ, 3.0 V max at ID=250uA. |
| 5 | D | passive | Drain of the N-channel MOSFET, tied internally with pins 6, 7 and 8; BVDSS 30 V, continuous ID 15 A at TA=25°C. |
| 6 | D | passive | Drain of the N-channel MOSFET, tied internally with pins 5, 7 and 8; BVDSS 30 V, pulsed IDM 40 A. |
| 7 | D | passive | Drain of the N-channel MOSFET, tied internally with pins 5, 6 and 8; RDS(ON) 6.5 mΩ typ at VGS=10V. |
| 8 | D | passive | Drain of the N-channel MOSFET, tied internally with pins 5, 6 and 7; RDS(ON) 10 mΩ typ at VGS=4.5V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | FOSAN |
| Package | SOP-8 |
| Category | Transistors/Thyristors |
| Pins | 8 |
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 | BVDSS | 30 | V | 1 | |||
| Gate-Source Voltage | VGS | 20 | V | 1 | |||
| Drain Current (continuous) | ID | 15 | A | TA = 25°C | 1 | ||
| Drain Current (continuous) | ID | 12 | A | TA = 70°C | 1 | ||
| Drain Current (pulsed) | IDM | 40 | A | 1 | |||
| Total Device Dissipation | PTOT | 3 | W | TA = 25°C | 1 | ||
| Total Device Dissipation | PTOT | 2.1 | W | TA = 70°C | 1 | ||
| Junction/Storage Temperature | TJ,Tstg | -55 | 150 | ℃ | 1 | ||
| Drain-Source Breakdown Voltage | BVDSS | 30 | V | ID=250uA, VGS=0V | 2 | ||
| Gate Threshold Voltage | VGS(th) | 1 | 1.5 | 3 | V | ID=250uA, VGS=VDS | 2 |
| Zero Gate Voltage Drain Current | IDSS | 1 | uA | VGS=0V, VDS=24V | 2 | ||
| Gate Body Leakage | IGSS | 100 | nA | VGS=+20V, VDS=0V | 2 | ||
| Static Drain-Source On-State Resistance | RDS(ON) | 6.5 | 8 | mΩ | ID=15A, VGS=10V | 2 | |
| Static Drain-Source On-State Resistance | RDS(ON) | 10 | 18 | mΩ | ID=11A, VGS=4.5V | 2 | |
| Diode Forward Voltage Drop | VSD | 0.71 | 1 | V | ISD=1A, VGS=0V | 2 | |
| Total Gate Charge | Qg | 16 | 20.8 | nC | VDS=15V, ID=14A, VGS=4.5V | 2 | |
| Gate Source Charge | Qgs | 5 | 6.5 | nC | VDS=15V, ID=14A, VGS=4.5V | 2 | |
| Gate Drain Charge | Qgd | 3 | 3.9 | nC | VDS=15V, ID=14A, VGS=4.5V | 2 | |
| Turn-ON Delay Time | td(on) | 17 | 34 | ns | VDS=15V, ID=14A, RGEN=6Ω, VGS=10V | 2 | |
| Turn-ON Rise Time | tr | 5 | 10 | ns | VDS=15V, ID=14A, RGEN=6Ω, VGS=10V | 2 | |
| Turn-OFF Delay Time | td(off) | 50 | 100 | ns | VDS=15V, ID=14A, RGEN=6Ω, VGS=10V | 2 | |
| Turn-OFF Fall Time | tf | 10 | 20 | ns | VDS=15V, ID=14A, RGEN=6Ω, VGS=10V | 2 | |
| Thermal Resistance Junction-Ambient | RΘJA | 42 | ℃/W | 1 |
CAD (KiCad official)
- Symbol:
FS4446A - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
fs4446a-etched.step/fs4446a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);fs4446a.step/fs4446a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: FOSAN datasheet (5 pp, sha256
fa291e9fa3cbd663, retrieved 2026-10-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).