# SF1604CT

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

SF1604CT 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, with 16 A total average forward current and 400 V repetitive peak reverse voltage for the dual rectifier. |
| 2 | K/CASE | passive | Common cathode of both diodes, also connected to the case/mounting tab per the TO-220AB marking and polarity diagram. |
| 3 | A2 | passive | Anode of the second diode, with 16 A total average forward current and 400 V repetitive peak reverse voltage for the dual rectifier. |

## 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 |  |  | 400 | V |  | 1 |
| Maximum average forward rectified current | IF(AV) |  |  | 16 | A | see fig.1 | 1 |
| Peak forward surge current | IFSM |  |  | 200 | A | 8.3ms single half sine-wave superimposed on rated load (JEDEC method at rated TL) | 1 |
| Operating junction temperature | TJ |  |  | 150 | ℃ |  | 1 |
| Storage temperature range | TSTD | -55 |  | 150 | ℃ |  | 1 |
| Instantaneous forward voltage per diode (note1) | VF |  | 1.19 | 1.23 | V | IF= 8, TA=25℃ | 1 |
| Instantaneous forward voltage per diode (note1) | VF |  | 1.24 | 1.3 | V | IF= 8, TA=125℃ | 1 |
| Reverse current per diode (note2) | IR |  |  | 5 | uA | TA=25℃ | 1 |
| Reverse current per diode (note2) | IR |  |  | 100 | uA | TA=125℃ | 1 |
| Maximum reverse recovery time | TRR |  |  | 35 | ns | IF=0.5A, IR=1.0A, IRR=0.25A | 1 |
| Typical thermal resistance (note3) | RθJC |  | 2.5 |  | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `SF1604CT`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220AB (KiCad packages3D, STEP)
- 3D model files: `sf1604ct-etched.step` / `sf1604ct-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sf1604ct.step` / `sf1604ct.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/8602970726739550208) (5 pp, sha256 `528eb6c2bf7544fc`, retrieved 2026-10-15, 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/sf1604ct-datasheet.pdf)