# SF2003CT

**NH** · Fast Recovery / High Efficiency Diodes · TO-220AB

SF2003CT from NH, in a TO-220AB. 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 | A1 | passive | Anode of the first diode (Pin1 in the marking diagram), part of a 300 V, 20 A total dual common-cathode super fast rectifier. |
| 2 | K | passive | Common cathode of both diodes (Pin2), also connected to the metal tab/case, with 300 V maximum repetitive peak reverse voltage. |
| 3 | A2 | passive | Anode of the second diode (Pin3 in the marking diagram), sharing the common cathode on pin 2. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | NH |
| Package | TO-220AB |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum Repetitive Peak Reverse Voltage | VRRM |  |  | 300 | V |  | 1 |
| Maximum RMS Voltage | VRMS |  |  | 210 | V |  | 1 |
| Maximum DC Blocking Voltage | VDC |  |  | 300 | V |  | 1 |
| Maximum Average Forward Rectified Current | IF(AV) |  |  | 20 | A | TC=100°C | 1 |
| Peak Forward Surge Current | IFSM |  |  | 200 | A | 8.3ms single half sine-wave superimposed on rated load per diode (JEDEC method) | 1 |
| Current Squared Time Per Diode | I2t |  |  | 166 | A2sec | t<8.3ms | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 175 | °C |  | 1 |
| Storage Temperature Range | TSTD | -55 |  | 175 | °C |  | 1 |
| Maximum Forward Voltage Per Diode | VFM |  | 0.9 | 1.05 | V | IF=10A, pulse test: 300 μs pulse width, 1% duty cycle (Note 1) | 1 |
| Maximum DC Reverse Current at Rated DC Blocking Voltage | IRRM |  |  | 5 | uA | Ta=25°C, rated DC blocking voltage (Note 1) | 1 |
| Maximum DC Reverse Current at Rated DC Blocking Voltage | IRRM |  |  | 50 | uA | Ta=125°C, rated DC blocking voltage (Note 1) | 1 |
| Maximum Reverse Recovery Time | TRR |  | 35 | 50 | nS | IF=0.5A, IR=1.0A, IRR=0.25A | 1 |
| Typical Junction Capacitance Per Diode | CJ |  | 50 |  | pF | 4V, 1MHz | 1 |
| Typical thermal resistance junction to case (TO-220AB) | RθJC |  | 2.5 |  | ℃/W | Device mounted on 75mm x 45mm x 2.5mm aluminum plate heatsink (Note 2) | 1 |

## CAD (KiCad official)

- Symbol: `SF2003CT`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220AB (KiCad packages3D, STEP)
- 3D model files: `sf2003ct-etched.step` / `sf2003ct-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sf2003ct.step` / `sf2003ct.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [NH datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603108017307340800) (5 pp, sha256 `ffaa0819c2c7ad29`, retrieved 2026-10-19, 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/sf2003ct-datasheet.pdf)