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FS4485
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
markdownFS4485
FOSAN · MOSFETs · SOP-8
FS4485 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 P-channel MOSFET, one of three paralleled source pins (pins 1-3); the datasheet gives a drain-source rating of -40 V. |
| 2 | S | passive | Source of the P-channel MOSFET, one of three paralleled source pins (pins 1-3); the datasheet gives a continuous drain current of -12 A at TA=25°C. |
| 3 | S | passive | Source of the P-channel MOSFET, one of three paralleled source pins (pins 1-3); the datasheet gives a pulsed drain current of -52 A. |
| 4 | G | input | Gate of the P-channel MOSFET; the datasheet gives a maximum gate-source voltage of ±20 V and a threshold of -1 V to -2.2 V at ID=-250uA. |
| 5 | D | passive | Drain of the P-channel MOSFET, one of four paralleled drain pins (pins 5-8); the datasheet gives a drain-source rating of -40 V. |
| 6 | D | passive | Drain of the P-channel MOSFET, one of four paralleled drain pins (pins 5-8); the datasheet gives a continuous drain current of -12 A at TA=25°C. |
| 7 | D | passive | Drain of the P-channel MOSFET, one of four paralleled drain pins (pins 5-8); the datasheet gives a pulsed drain current of -52 A. |
| 8 | D | passive | Drain of the P-channel MOSFET, one of four paralleled drain pins (pins 5-8); the datasheet gives an RDS(ON) of 13 mΩ typical at VGS=-10V. |
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 | -40 | V | 1 | |||
| Gate-Source Voltage | VGS | 20 | V | 1 | |||
| Drain Current (continuous) | ID | -12 | A | TA = 25°C | 1 | ||
| Drain Current (pulsed) | IDM | -52 | A | 1 | |||
| Total Device Dissipation | PTOT | 3 | W | TA = 25°C | 1 | ||
| Thermal Resistance Junction-Ambient | RΘJA | 41 | ℃/W | 1 | |||
| Avalanche Energy Single Pulse | EAS | 80 | mJ | VDD= -25V, VGS= -10V, L= 0.1mH, IAS= -34A | 1 | ||
| Junction/Storage Temperature | TJ,Tstg | -55 | 150 | ℃ | 1 | ||
| Drain-Source Breakdown Voltage | BVDSS | -40 | V | ID = -250uA, VGS=0V | 2 | ||
| Gate Threshold Voltage | VGS(th) | -1 | -1.5 | -2.2 | V | ID = -250uA, VGS= VDS | 2 |
| Zero Gate Voltage Drain Current | IDSS | -1 | uA | VGS=0V, VDS= -40V | 2 | ||
| Gate Body Leakage | IGSS | 100 | nA | VGS=+20V, VDS=0V | 2 | ||
| Static Drain-Source On-State Resistance | RDS(ON) | 13 | 16 | mΩ | ID= -10A, VGS= -10V | 2 | |
| Static Drain-Source On-State Resistance | RDS(ON) | 17.5 | 23 | mΩ | ID= -5A, VGS= -4.5V | 2 | |
| Diode Forward Voltage Drop | VSD | -1.2 | V | ISD= -10A, VGS=0V | 2 |
CAD (KiCad official)
- Symbol:
FS4485 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
fs4485-etched.step/fs4485-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);fs4485.step/fs4485.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: FOSAN datasheet (5 pp, sha256
4afe52279c646064, 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).