# CMS4805

**Cmos** · MOSFETs · SOP-8

CMS4805 from Cmos, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | S1 | passive | Source of P-channel MOSFET #1. Continuous source current up to -6.5A; body diode forward voltage typ. -0.90V (max -1.4V) at IS = -6A. |
| 2 | G1 | input | Gate of P-channel MOSFET #1. VGS absolute maximum ±20V. Gate threshold voltage VGS(th) = -1V min to -2.5V max at ID = -250μA. Total gate charge Qg typ. 15nC at VGS = -10V. |
| 3 | S2 | passive | Source of P-channel MOSFET #2. Continuous source current up to -6.5A; body diode forward voltage typ. -0.90V (max -1.4V) at IS = -6A. |
| 4 | G2 | input | Gate of P-channel MOSFET #2. VGS absolute maximum ±20V. Gate threshold voltage VGS(th) = -1V min to -2.5V max at ID = -250μA. Total gate charge Qg typ. 15nC at VGS = -10V. |
| 5 | D2 | passive | Drain of P-channel MOSFET #2 (internally tied to pin 6 for current handling and thermal dissipation). VDS absolute maximum -30V. RDS(on) typ. 36mΩ at VGS = -10V. |
| 6 | D2 | passive | Drain of P-channel MOSFET #2 (internally tied to pin 5 for current handling and thermal dissipation). VDS absolute maximum -30V. RDS(on) typ. 36mΩ at VGS = -10V. |
| 7 | D1 | passive | Drain of P-channel MOSFET #1 (internally tied to pin 8 for current handling and thermal dissipation). VDS absolute maximum -30V. RDS(on) typ. 36mΩ at VGS = -10V. |
| 8 | D1 | passive | Drain of P-channel MOSFET #1 (internally tied to pin 7 for current handling and thermal dissipation). VDS absolute maximum -30V. RDS(on) typ. 36mΩ at VGS = -10V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Cmos |
| Package | SOP-8 |
| Category | Triode/MOS Tube/Transistor |
| Pins | 8 |

## Ordering variants

Same part, different packaging or reel option.

- `CMS4805`

## 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 Breakdown Voltage | BVDSS | -30 |  |  | V | VGS=0V , ID=-250μA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 36 | 42 | mΩ | VGS=-10V , ID=-10A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 60 | 75 | mΩ | VGS=-4.5V , ID=-4A | 2 |
| Gate Threshold Voltage | VGS(th) | -1 |  | -2.5 | V | VGS=VDS , ID = -250μA | 2 |
| Drain-Source Leakage Current (TJ=55℃) | IDSS |  |  | -5 | uA | VDS=-24V, VGS=0V TJ=55℃ | 2 |
| Drain-Source Leakage Current | IDSS |  |  | -1 | uA | VDS=-24V, VGS=0V | 2 |
| Gate-Source Leakage Current | IGSS | -100 |  | 100 | nA | VGS =±20V , VDS=0V | 2 |
| Continuous Source Current | IS |  |  | -6.5 | A |  | 2 |
| Pulsed Source Current | ISM |  |  | -19 | A | VG=VD=0V , Force Current | 2 |
| Diode Forward Voltage | VSD |  | -0.9 | -1.4 | V | VGS=0V , IS=-6A ,TJ=25℃ | 2 |
| Drain-Source Voltage | VDS |  |  | -30 | V |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Continuous Drain Current | ID |  |  | -6.5 | A | TA=25℃ | 1 |
| Continuous Drain Current | ID |  |  | -5.3 | A | TA=70℃ | 1 |
| Pulsed Drain Current | IDM |  |  | -19 | A |  | 1 |
| Single Pulse Avalanche Energy | EAS |  |  | 55 | mJ | VDD=-25V , VGS=-10V , L=1mH , IAS=-10.5A | 1 |
| Total Power Dissipation | PD |  |  | 3 | W | TA=25℃ | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance, Junction-to-Ambient | RθJA |  |  | 42 | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `CMS4805`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `cms4805-etched.step` / `cms4805-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cms4805.step` / `cms4805.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Cmos datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758071771201314816) (None pp, sha256 `a55cdd1dad2add58`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/cms4805-datasheet.pdf)