# BT-102GEK-31-572D

**Foshan NationStar Optoelectronics** · LED Indication - Discrete · LED_D3.0mm

BT-102GEK-31-572D from Foshan NationStar Optoelectronics, in a LED_D3.0mm. 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.


::adom-states{src="/adom/bt-102gek-31-572d/render/states.json"}

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode, the shorter lead on the flat-edge side of the lens (right in the drawing); reverse voltage VR max 5 V. |
| 2 | A | passive | Anode, the longer lead (left in the drawing); forward current IF max 25 mA, forward voltage VF 2.0 V typ. to 2.5 V max. at IF=20 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Foshan NationStar Optoelectronics |
| Package | LED_D3.0mm |
| Category | Optoelectronics |
| Pins | 2 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Forward Current | IF |  |  | 25 | mA |  | 3 |
| Pulse Forward Current | IFP |  |  | 100 | mA | Pulse width≤0.1ms, Duty≤1/10 | 3 |
| Reverse Voltage | VR |  |  | 5 | V |  | 3 |
| Operating Temperature | TOPR | -25 |  | 85 | ℃ |  | 3 |
| Storage Temperature | Tstg | -40 |  | 100 | ℃ |  | 3 |
| Power Dissipation | PD |  |  | 75 | mW |  | 3 |
| Reverse Current | IR |  |  | 10 | μA | VR=5V | 3 |
| Forward Voltage | VF |  | 2 | 2.5 | V | IF=20mA | 3 |
| Luminous Intensity | IV | 200 |  |  | mcd |  | 3 |

## CAD (KiCad official)

- Symbol: `BT-102GEK-31-572D`
- Footprint: `LED_THT:LED_D3.0mm`
- 3D model: LED_D3.0mm (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [Foshan NationStar Optoelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588887303841964032) (9 pp, sha256 `c3a2f3dbfa257861`, retrieved 2026-11-06, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/bt-102gek-31-572d-datasheet.pdf)