# STZ6.8NT146

**ROHM Semicon** · Zener Diodes · TO-236-3(SOT-23-3)

STZ6.8NT146 from ROHM Semicon, in a TO-236-3(SOT-23-3). 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 | K1 | passive | Cathode of the first Zener element (VZ 6.47 to 7.14 V at IZ=5 mA); total power for both elements is 200 mW. |
| 2 | K2 | passive | Cathode of the second Zener element (VZ 6.47 to 7.14 V at IZ=5 mA); total power for both elements is 200 mW. |
| 3 | A | passive | Common anode of the twin Zener diodes, the single lead on the opposite side of the package from pins 1 and 2. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | TO-236-3(SOT-23-3) |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage | VZ | 6.47 |  | 7.14 | V | IZ=5mA | 1 |
| Reverse current | IR |  |  | 0.5 | μA | VR=3.5V | 1 |
| Dynamic impedance | ZZ |  |  | 40 | Ω | IZ=5mA | 1 |
| Zener impedance | ZZk |  |  | 60 | Ω | IZ=0.5mA | 1 |
| Power dissipation (total of 2 elements) | P |  |  | 200 | mW | Ta=25°C | 1 |
| Junction temperature | Tj |  |  | 150 | °C | Ta=25°C | 1 |
| Storage temperature | Tstg | -55 |  | 150 | °C | Ta=25°C | 1 |

## CAD (KiCad official)

- Symbol: `STZ6.8NT146`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: TO-236-3(SOT-23-3) (KiCad packages3D, STEP)
- 3D model files: `stz6-8nt146-etched.step` / `stz6-8nt146-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stz6-8nt146.step` / `stz6-8nt146.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ROHM Semicon datasheet](docs/stz6-8nt146-datasheet.pdf) (6 pp, sha256 `273f68be071e51d9`, retrieved 2026-10-22, tier: manufacturer)
- **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/stz6-8nt146-datasheet.pdf)