# CJS9004A

**Changjing** · MOSFETs · TSSOP-8

CJS9004A from Changjing, in a TSSOP-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 | D1/D2 | passive | Common drain of MOSFET 1 and MOSFET 2 (common-drain configuration), rated VDS 20 V and continuous ID 10 A. |
| 2 | S1 | passive | Source of MOSFET 1, connected in parallel with pin 3; VDS 20 V, ID 10 A, RDS(on) typ 8.5 mΩ at VGS 4.5 V. |
| 3 | S1 | passive | Source of MOSFET 1, connected in parallel with pin 2; VDS 20 V, ID 10 A, RDS(on) typ 8.5 mΩ at VGS 4.5 V. |
| 4 | G1 | input | Gate of MOSFET 1 (ESD protected), maximum gate-source voltage ±12 V, threshold 0.4 to 1.0 V. |
| 5 | G2 | input | Gate of MOSFET 2 (ESD protected), maximum gate-source voltage ±12 V, threshold 0.4 to 1.0 V. |
| 6 | S2 | passive | Source of MOSFET 2, connected in parallel with pin 7; VDS 20 V, ID 10 A, RDS(on) typ 8.5 mΩ at VGS 4.5 V. |
| 7 | S2 | passive | Source of MOSFET 2, connected in parallel with pin 6; VDS 20 V, ID 10 A, RDS(on) typ 8.5 mΩ at VGS 4.5 V. |
| 8 | D1/D2 | passive | Common drain of MOSFET 1 and MOSFET 2 (common-drain configuration), rated VDS 20 V and continuous ID 10 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | TSSOP-8 |
| Category | Triode/MOS Tube/Transistor |
| 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 breakdown voltage | V(BR)DSS | 20 |  |  | V | VGS = 0V, ID =250µA | 2 |
| Zero gate voltage drain current | IDSS |  |  | 1 | µA | VDS =16V,VGS = 0V | 2 |
| Gate-body leakage current | IGSS | -1 |  | 1 | µA | VGS =±4.5V, VDS = 0V | 2 |
| Gate-body leakage current | IGSS | -10 |  | 10 | µA | VGS =±8V, VDS = 0V | 2 |
| Gate threshold voltage | VGS(th) | 0.4 |  | 1 | V | VDS =VGS, ID =250µA | 2 |
| Drain-source on-resistance | RDS(on) |  | 8.5 | 10 | mΩ | VGS =4.5V, ID =3A | 2 |
| Drain-source on-resistance | RDS(on) |  | 8.8 | 10.5 | mΩ | VGS =4.0V, ID =3A | 2 |
| Drain-source on-resistance | RDS(on) |  | 9 | 11 | mΩ | VGS =3.8V, ID =3A | 2 |
| Drain-source on-resistance | RDS(on) |  | 9.7 | 11.5 | mΩ | VGS =3.1V, ID =3A | 2 |
| Drain-source on-resistance | RDS(on) |  | 11 | 15 | mΩ | VGS =2.5V, ID =3A | 2 |
| Diode forward voltage | VSD |  |  | 1.2 | V | IS=3A, VGS = 0V | 2 |
| Drain-Source Voltage | VDS |  |  | 20 | V | Ta=25℃ | 1 |
| Gate-Source Voltage | VGS | -12 |  | 12 | V | Ta=25℃ | 1 |
| Continuous Drain Current | ID |  |  | 10 | A | Ta=25℃ | 1 |
| Pulsed Drain Current | IDM |  |  | 50 | A | Ta=25℃ | 1 |
| Power Dissipation | PD |  |  | 2 | W | Ta=25℃ | 1 |
| Operating Junction and Storage Temperature | TJ, Tstg | -55 |  | 150 | ℃ | Ta=25℃ | 1 |
| Thermal Resistance from Junction to Ambient | RθJA |  |  | 62.5 | ℃/W | Ta=25℃ | 1 |
| Input Capacitance | Ciss |  | 1258 |  | pF | VDS =10V,VGS =0V,f =0.1MHz | 2 |
| Output Capacitance | Coss |  | 193 |  | pF | VDS =10V,VGS =0V,f =0.1MHz | 2 |
| Reverse Transfer Capacitance | Crss |  | 51 |  | pF | VDS =10V,VGS =0V,f =0.1MHz | 2 |
| Total gate charge | Qg |  | 15 |  | nC | VDS =10V,VGS =4.5V,ID =7A | 2 |
| Gate-source charge | Qgs |  | 3.4 |  | nC | VDS =10V,VGS =4.5V,ID =7A | 2 |
| Gate-drain charge | Qgd |  | 5.7 |  | nC | VDS =10V,VGS =4.5V,ID =7A | 2 |
| Turn-on delay time | td(on) |  | 30 |  | ns | VGS=4.5V,VDD=10V, RL=1.35Ω,RGEN=3Ω | 2 |
| Turn-on rise time | tr |  | 54 |  | ns | VGS=4.5V,VDD=10V, RL=1.35Ω,RGEN=3Ω | 2 |
| Turn-off delay time | td(off) |  | 77 |  | ns | VGS=4.5V,VDD=10V, RL=1.35Ω,RGEN=3Ω | 2 |
| Turn-off fall time | tf |  | 58 |  | ns | VGS=4.5V,VDD=10V, RL=1.35Ω,RGEN=3Ω | 2 |

## CAD (KiCad official)

- Symbol: `CJS9004A`
- Footprint: `Package_SO:TSSOP-8_3x3mm_P0.65mm`
- 3D model: TSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `cjs9004a-etched.step` / `cjs9004a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cjs9004a.step` / `cjs9004a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjing datasheet](docs/cjs9004a-datasheet.pdf) (5 pp, sha256 `d9137eff3eb9f7d1`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-sonnet-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).

[Datasheet PDF](docs/cjs9004a-datasheet.pdf)