component
FS4803
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
markdownFS4803
FOSAN · MOSFETs · SOP-8
FS4803 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 | S2 | passive | Source of P-channel MOSFET 2; pin 1 is at the dot marker, and the drain-source rating is -30 V. |
| 2 | G2 | input | Gate of P-channel MOSFET 2; the gate-source voltage limit is ±20 V and the threshold is -1.3 V min to -2.3 V max. |
| 3 | S1 | passive | Source of P-channel MOSFET 1; the continuous drain current rating is -4.9 A at TA = 25°C. |
| 4 | G1 | input | Gate of P-channel MOSFET 1; the gate-source voltage limit is ±20 V and the threshold is -1.3 V min to -2.3 V max. |
| 5 | D1 | passive | Drain of P-channel MOSFET 1, tied to pin 6; the drain-source rating is -30 V and the pulsed drain current is -20 A. |
| 6 | D1 | passive | Drain of P-channel MOSFET 1, tied to pin 5; the drain-source rating is -30 V and the pulsed drain current is -20 A. |
| 7 | D2 | passive | Drain of P-channel MOSFET 2, tied to pin 8; the drain-source rating is -30 V and the pulsed drain current is -20 A. |
| 8 | D2 | passive | Drain of P-channel MOSFET 2, tied to pin 7; the drain-source rating is -30 V and the pulsed drain current is -20 A. |
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 | -4.9 | A | at TA = 25°C | 1 | ||
| Drain Current (continuous) | ID | -3.1 | A | at TA = 70°C | 1 | ||
| Drain Current (pulsed) | IDM | -20 | A | 1 | |||
| Total Device Dissipation | PTOT | 1.2 | W | at TA = 25°C | 1 | ||
| Total Device Dissipation | PTOT | 0.8 | W | at TA = 70°C | 1 | ||
| Avalanche Energy Single Pulse | EAS | 15 | mJ | 1 | |||
| Junction/Storage Temperature | TJ,Tstg | -55 | 150 | °C | 1 | ||
| Drain-Source Breakdown Voltage | BVDSS | -30 | V | ID = -250uA, VGS=0V | 2 | ||
| Gate Threshold Voltage | VGS(th) | -1.3 | -1.5 | -2.3 | 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) | 36 | 50 | mΩ | ID= -4.9A, VGS= -10V | 2 | |
| Static Drain-Source On-State Resistance | RDS(ON) | 45 | 65 | mΩ | ID= -3A, VGS= -4.5V | 2 | |
| Diode Forward Voltage Drop | VSD | -0.8 | -1.3 | V | ISD= -1.7A, VGS=0V | 2 | |
| Thermal Resistance Junction-Ambient | RΘJA | 105 | °C/W | 1 |
CAD (KiCad official)
- Symbol:
FS4803 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
fs4803-etched.step/fs4803-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);fs4803.step/fs4803.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: FOSAN datasheet (5 pp, sha256
76dd88e0fe2a9e83, 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).