# 2SD965 HD

**Guangdong Hottech** · Bipolar Transistors - BJT · SOT-89

2SD965 HD from Guangdong Hottech, 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 | B | input | Base of the NPN transistor; drives the collector current, with VEBO limited to 7 V. |
| 2 | C | passive | Collector (also connected to the exposed tab); VCBO 40 V, VCEO 20 V, IC up to 5 A, PC 750 mW. |
| 3 | E | passive | Emitter of the NPN transistor; VEBO limited to 7 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Guangdong Hottech |
| Package | SOT-89 |
| Category | Transistors |
| 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 Voltage | VCBO |  |  | 40 | V | TA = 25°C | 1 |
| Collector-Emitter Voltage | VCEO |  |  | 20 | V | TA = 25°C | 1 |
| Emitter-Base Voltage | VEBO |  |  | 7 | V | TA = 25°C | 1 |
| Collector Current | IC |  |  | 5 | A | TA = 25°C | 1 |
| Collector Power Dissipation | PC |  |  | 750 | mW | TA = 25°C | 1 |
| Junction Temperature | TJ |  |  | 150 | °C | TA = 25°C | 1 |
| Storage Temperature | TSTG | -55 |  | 150 | °C |  | 1 |
| Thermal Resistance Junction to Ambient | RθJA |  | 167 |  | °C/W |  | 1 |
| Collector-base breakdown voltage | V(BR)CBO | 40 |  |  | V | IC=100uA, IE=0 | 1 |
| Collector-emitter breakdown voltage | V(BR)CEO | 20 |  |  | V | IC=1mA, IB=0 | 1 |
| Emitter-base breakdown voltage | V(BR)EBO | 7 |  |  | V | IE=10uA, IC=0 | 1 |
| Collector cut-off current | ICBO |  |  | 0.1 | uA | VCB=10V, IE=0 | 1 |
| Emitter cut-off current | IEBO |  |  | 0.1 | uA | VEB=7V, IC=0 | 1 |
| DC current gain 1 | hFE1 | 200 |  |  |  | VCE=2V, IC=1mA | 1 |
| DC current gain 2 | hFE2 | 230 |  | 800 |  | VCE=2V, IC=500mA | 1 |
| DC current gain 3 | hFE3 | 150 |  |  |  | VCE=2V, IC=2A | 1 |
| Collector-emitter saturation voltage | VCE(sat) |  |  | 1 | V | IC=3A, IB=100mA | 1 |
| Transition frequency | fT | 150 |  |  | MHz | VCE=6V, IC=50mA, f=200MHz | 1 |
| Collector output capacitance | Cob |  |  | 50 | pF | VCB=20V, IE=0, f=1MHz | 1 |

## CAD (KiCad official)

- Symbol: `2SD965 HD`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files: `2sd965-hd-etched.step` / `2sd965-hd-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `2sd965-hd.step` / `2sd965-hd.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Guangdong Hottech datasheet](docs/2sd965-hd-datasheet.pdf) (4 pp, sha256 `52fe48d0ca04a30c`, retrieved 2026-10-26, 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/2sd965-hd-datasheet.pdf)