# CS3N120FA9R

**CRMICRO** · MOSFETs · TO-220F

CS3N120FA9R from CRMICRO, in a TO-220F. 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 | Gate | input | Gate control input; gate-to-source voltage is rated at ±30 V with a threshold of 3.0 to 5.0 V. |
| 2 | Drain | passive | Drain terminal; drain-to-source voltage is rated at 1200 V and continuous drain current at 3 A. |
| 3 | Source | passive | Source terminal; body-diode continuous source current is 3 A maximum. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | CRMICRO |
| Package | TO-220F |
| Category | Transistors/Thyristors |
| Pins | 3 |

## 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-to-Source Voltage | VDSS |  |  | 1200 | V | Tc = 25℃ | 1 |
| Continuous Drain Current | ID |  |  | 3 | A | Tc = 25℃ | 1 |
| Continuous Drain Current | ID |  |  | 1.8 | A | TC = 100 °C | 1 |
| Pulsed Drain Current | IDM |  |  | 12 | A | a1: Repetitive rating; pulse width limited by maximum junction temperature | 1 |
| Gate-to-Source Voltage | VGS | -30 |  | 30 | V | Tc = 25℃ | 1 |
| Single Pulse Avalanche Energy | EAS |  |  | 30 | mJ | a2: L=10mH, ID=2.5A, Start TJ=25℃ | 1 |
| Peak Diode Recovery dv/dt | dv/dt |  |  | 5 | V/ns | a3: ISD=3A, di/dt ≤100A/us, VDD≤BVDS, Start TJ=25℃ | 1 |
| Power Dissipation | PD |  |  | 30 | W | TC = 25℃ | 1 |
| Operating Junction and Storage Temperature Range | TJ，Tstg | -55 |  | 150 | ℃ |  | 1 |
| Maximum Temperature for Soldering | TL |  |  | 300 | ℃ |  | 1 |
| Drain to Source Breakdown Voltage | VDSS | 1200 |  |  | V | VGS=0V, ID=250µA | 2 |
| Drain to Source Leakage Current | IDSS |  |  | 25 | µA | VDS=1200V, VGS=0V, Ta = 25℃ | 2 |
| Drain to Source Leakage Current | IDSS |  |  | 250 | µA | VDS=960V, VGS=0V, Ta = 125℃ | 2 |
| Gate to Source Forward Leakage | IGSS(F) |  |  | 100 | nA | VGS=+30V | 2 |
| Gate to Source Reverse Leakage | IGSS(R) |  |  | -100 | nA | VGS=-30V | 2 |
| Drain-to-Source On-Resistance | RDS(ON) |  | 5.1 | 6 | Ω | VGS=10V, ID=1.5A | 2 |
| Gate Threshold Voltage | VGS(TH) | 3 |  | 5 | V | VDS = VGS, ID = 250µA; pulse width tp≤300µs, δ≤2% | 2 |
| Continuous Source Current (Body Diode) | IS |  |  | 3 | A |  | 3 |
| Maximum Pulsed Current (Body Diode) | ISM |  |  | 12 | A |  | 3 |
| Diode Forward Voltage | VSD |  |  | 1.5 | V | IS=3.0A, VGS=0V | 3 |
| Junction-to-Case Thermal Resistance | RθJC |  |  | 4.2 | ℃/W |  | 3 |
| Junction-to-Ambient Thermal Resistance | RθJA |  |  | 62.5 | ℃/W |  | 3 |

## CAD (KiCad official)

- Symbol: `CS3N120FA9R`
- Footprint: `Package_TO_SOT_THT:TO-220F-3_Vertical`
- 3D model: TO-220F (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [CRMICRO datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589835768920645632) (10 pp, sha256 `3ff20c06791ae8e7`, retrieved 2026-11-12, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-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).

[Datasheet PDF](docs/cs3n120fa9r-datasheet.pdf)