# 2SD1766-R

**Slkor(SLKORMICRO Elec.)** · Bipolar (BJT) · SOT-89

2SD1766-R from Slkor(SLKORMICRO Elec.), in a SOT-89. 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 | Base | input | Base of the NPN transistor; VEBO max 5 V and VEB=4 V gives IEBO of 1 uA max. |
| 2 | Collector | passive | Collector of the NPN transistor; IC up to 2 A continuous, VCEO 32 V, VCBO 40 V. |
| 3 | Emitter | passive | Emitter of the NPN transistor, connected to the lowest potential in typical use; total power dissipation PC 0.5 W. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Slkor(SLKORMICRO Elec.) |
| Package | SOT-89 |
| 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 |
|---|---|---|---|---|---|---|---|
| Collector-base breakdown voltage | VCBO | 40 |  |  | V | Ic= 100 μA, IE=0 | 1 |
| Collector-emitter breakdown voltage | VCEO | 32 |  |  | V | Ic= 1 mA, IB=0 | 1 |
| Emitter-base breakdown voltage | VEBO | 5 |  |  | V | IE= 100μA, IC=0 | 1 |
| Collector-base cut-off current | ICBO |  |  | 1 | uA | VCB= 20 V, IE=0 | 1 |
| Emitter cut-off current | IEBO |  |  | 1 | uA | VEB= 4V, IC=0 | 1 |
| Collector-emitter saturation voltage | VCE(sat) |  |  | 0.8 | V | IC=2 A, IB=200mA | 1 |
| Base-emitter saturation voltage | VBE(sat) |  |  | 1.2 | V | IC=2 A, IB=200mA | 1 |
| DC current gain (R grade 180-390) | hFE | 180 |  | 390 |  | VCE= 3V, IC= 500mA | 1 |
| Collector output capacitance | Cob |  | 30 |  | pF | VCB= 10V, IE=0, f=1MHz | 1 |
| Transition frequency | fT |  | 100 |  | MHz | VCE= 5V, IE= 50mA, f=100MHz | 1 |
| Collector-base voltage | VCBO |  |  | 40 | V | Ta = 25℃ | 1 |
| Collector-emitter voltage | VCEO |  |  | 32 | V | Ta = 25℃ | 1 |
| Emitter-base voltage | VEBO |  |  | 5 | V | Ta = 25℃ | 1 |
| Collector current - continuous | IC |  |  | 2 | A | Ta = 25℃ | 1 |
| Collector power dissipation | PC |  |  | 0.5 | W | Ta = 25℃ | 1 |
| Junction temperature | TJ |  |  | 150 | ℃ | Ta = 25℃ | 1 |
| Storage temperature range | Tstg | -55 |  | 150 | ℃ | Ta = 25℃ | 1 |

## CAD (KiCad official)

- Symbol: `2SD1766-R`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files: `2sd1766-r-etched.step` / `2sd1766-r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `2sd1766-r.step` / `2sd1766-r.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Slkor(SLKORMICRO Elec.) datasheet](docs/2sd1766-r-datasheet.pdf) (3 pp, sha256 `d33485d2cfa7398e`, retrieved 2026-10-23, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-sonnet-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/2sd1766-r-datasheet.pdf)