# LTW-C281DS5

**Lite On** · LED Indication - Discrete · 0402

LTW-C281DS5 from Lite On, in a 0402. 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/ltw-c281ds5/render/states.json"}

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode (-) terminal, identified by the green cathode mark on the package; reverse voltage 5 V max. |
| 2 | A | passive | Anode (+) terminal of the InGaN white LED; forward voltage 2.55 V min to 3.15 V max at IF = 5 mA, DC forward current 20 mA max. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Lite On |
| Package | 0402 |
| 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 |
|---|---|---|---|---|---|---|---|
| Power Dissipation |  |  |  | 70 | mW | At Ta=25℃ | 3 |
| Peak Forward Current |  |  |  | 100 | mA | 1/10 Duty Cycle, 0.1ms Pulse Width | 3 |
| DC Forward Current |  |  |  | 20 | mA | At Ta=25℃ | 3 |
| Reverse Voltage |  |  |  | 5 | V | At Ta=25℃; not for continuous operation | 3 |
| Operating Temperature Range |  | -30 |  | 80 | °C |  | 3 |
| Storage Temperature Range |  | -55 |  | 105 | °C |  | 3 |
| Infrared Soldering Condition |  |  |  | 260 | °C | For 10 Seconds | 3 |
| Luminous Intensity | IV | 45 |  | 180 | mcd | IF = 5mA; Note 1, 2, 5 | 4 |
| Viewing Angle | 2θ1/2 |  | 130 |  | deg | Fig.6 | 4 |
| Chromaticity Coordinate x | x |  | 0.294 |  |  | IF = 5mA; Note 3, 5; Fig.1 | 4 |
| Chromaticity Coordinate y | y |  | 0.286 |  |  | IF = 5mA; Note 3, 5; Fig.1 | 4 |
| Forward Voltage | VF | 2.55 |  | 3.15 | V | IF = 5mA | 4 |
| Reverse Current | IR |  |  | 10 | μA | VR = 5V | 4 |
| Forward Voltage for good LED (ESD check) | VF | 2 |  |  | V | IF = 0.1mA; InGaN product; ESD damage check | 10 |
| Forward Voltage bin tolerance | VF | -0.05 |  | 0.05 | V | Per VF bin (VF Spec. Table, IF = 5mA) | 6 |
| Luminous Intensity bin tolerance | IV | -15 |  | 15 | % | Per luminous intensity bin | 6 |
| Hue bin tolerance | x, y | -0.01 |  | 0.01 |  | Per hue bin (CIE 1931 x, y) | 6 |
| Chromaticity guarantee tolerance | x, y | -0.01 |  | 0.01 |  | Guarantee on chromaticity coordinates (Note 6) | 4 |
| Reflow pre-heat temperature |  | 150 |  | 200 | °C | Reflow soldering; pre-heat time 120 sec max | 9 |
| Reflow peak temperature |  |  |  | 260 | °C | Reflow soldering; soldering time 10 sec max (max two times) | 9 |
| Soldering iron temperature |  |  |  | 300 | °C | Soldering iron; 3 sec max (one time only) | 9 |

## CAD (KiCad official)

- Symbol: `LTW-C281DS5`
- Footprint: `LED_SMD:LED_0402_1005Metric`
- 3D model: 0402 (KiCad packages3D, STEP)
- 3D model files: `ltw-c281ds5-etched.step` / `ltw-c281ds5-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ltw-c281ds5.step` / `ltw-c281ds5.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Lite On datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588900540198113281) (12 pp, sha256 `8d10be97c9d569bf`, retrieved 2026-10-17, 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/ltw-c281ds5-datasheet.pdf)