# STTH806TTI

**STMicroelectronics** · Fast Recovery / High Efficiency Diodes · ITO-220AB-3

STTH806TTI from STMicroelectronics, in a ITO-220AB-3. 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 | A | passive | Anode of the first 300V diode, the input end of the series pair (600V VRRM across pins 1 and 3, IF(AV) 8A). |
| 2 | M | passive | Midpoint between the two series 300V diodes (cathode of the first, anode of the second), brought out as the centre lead. |
| 3 | K | passive | Cathode of the second 300V diode, the output end of the series pair (600V VRRM across pins 1 and 3). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | ITO-220AB-3 |
| 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 |
|---|---|---|---|---|---|---|---|
| Repetitive peak reverse voltage | VRRM |  |  | 600 | V |  | 1 |
| RMS forward current | IF(RMS) |  |  | 14 | A |  | 1 |
| Surge non repetitive forward current | IFSM |  |  | 80 | A | tp = 10 ms sinusoidal | 1 |
| Storage temperature range | Tstg | -65 |  | 150 | °C |  | 1 |
| Maximum operating junction temperature | Tj |  |  | 150 | °C |  | 1 |
| Average forward current (limiting value, both diodes in series) | IF(AV) |  |  | 8 | A | limiting values for both diodes in series | 1 |
| Insulated voltage (insulated version) |  |  |  | 2500 | V(RMS) | insulated version | 1 |
| Reverse leakage current | IR |  |  | 10 | µA | VR = VRRM, Tj = 25°C | 2 |
| Reverse leakage current | IR |  | 15 | 100 | µA | VR = VRRM, Tj = 125°C | 2 |
| Forward voltage drop | VF |  |  | 3.6 | V | IF = 8 A, Tj = 25°C | 2 |
| Forward voltage drop | VF |  | 2.1 | 2.6 | V | IF = 8 A, Tj = 125°C | 2 |
| Reverse recovery time | trr |  |  | 13 | ns | IF = 0.5 A, Irr = 0.25 A, IR = 1 A, Tj = 25°C | 2 |
| Reverse recovery time | trr |  |  | 30 | ns | IF = 1 A, dIF/dt = -50 A/µs, VR = 30 V | 2 |
| Peak reverse recovery current | IRM |  | 4 | 5.5 | A | VR = 400 V, IF = 8 A, dIF/dt = -200 A/µs, Tj = 125°C | 2 |
| Softness factor | Sfactor |  | 0.4 |  | - |  | 2 |
| Forward recovery time | tfr |  |  | 200 | ns | IF = 8 A, dIF/dt = 100 A/µs, measured at 1.1 x VF max, Tj = 25°C | 2 |
| Transient peak forward voltage | VFP |  |  | 7 | V | IF = 8 A, dIF/dt = 100 A/µs, Tj = 25°C | 2 |
| Junction to case thermal resistance (per diode) | Rth (j-c) |  | 5 |  | °C/W | Per diode | 2 |
| Coupling thermal resistance | Rth (c) |  | 0.2 |  |  | Coupling | 2 |
| Junction to case thermal resistance (total) | Rth (j-c) |  | 2.6 |  |  | Total | 2 |
| Conduction power dissipation for both diodes | P1 |  | 27 |  | W | IF(AV) = 8 A, δ = 0.5, Tc = 80°C | 2 |
| Junction capacitance (insulated version) |  |  | 7 |  | pF | insulated version | 1 |

## CAD (KiCad official)

- Symbol: `STTH806TTI`
- Footprint: `Package_TO_SOT_THT:TO-220F-3_Vertical`
- 3D model: ITO-220AB-3 (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588891140540010496) (5 pp, sha256 `7b3b4125db51b2a4`, retrieved 2026-10-21, 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/stth806tti-datasheet.pdf)