# LTST-C171KRKT

**Lite On** · LED Indication - Discrete · 0805

LTST-C171KRKT from Lite On, in a 0805. 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/ltst-c171krkt/render/states.json"}

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode (negative) terminal, marked CATHODE on the package drawing; the drawing shows it as the minus polarity terminal. |
| 2 | A | passive | Anode (positive) terminal of the AlInGaP red LED; DC forward current is 30 mA max, with VF of 2.0 V min and 2.4 V max at IF = 20 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Lite On |
| Package | 0805 |
| 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 |
|---|---|---|---|---|---|---|---|
| Luminous Intensity | IV | 18 | 54 |  | mcd | IF = 20mA | 5 |
| Forward Voltage | VF |  | 2 | 2.4 | V | IF = 20mA | 5 |
| Reverse Current | IR |  |  | 10 | μA | VR = 5V | 5 |
| Operating Temperature Range |  | -55 |  | 85 | °C |  | 3 |
| Storage Temperature Range |  | -55 |  | 85 | °C |  | 3 |
| Power Dissipation |  |  |  | 75 | mW |  | 3 |
| Peak Forward Current |  |  |  | 80 | mA | 1/10 Duty Cycle, 0.1ms Pulse Width | 3 |
| DC Forward Current |  |  |  | 30 | mA |  | 3 |
| Derating Linear From 50°C |  |  |  | 0.4 | mA/°C | Derating linear from 50°C | 3 |
| Reverse Voltage |  |  |  | 5 | V |  | 3 |
| Wave Soldering Condition |  |  |  | 260 | °C | For 5 Seconds | 3 |
| Infrared Soldering Condition |  |  |  | 260 | °C | For 5 Seconds | 3 |
| Vapor Phase Soldering Condition |  |  |  | 215 | °C | For 3 Minutes | 3 |
| Luminous Intensity Bin Tolerance |  | -15 |  | 15 | % | Each intensity bin | 6 |
| Viewing Angle | 2θ1/2 |  | 130 |  | deg | Note 2 (Fig.6) | 5 |
| Peak Emission Wavelength | λP |  | 639 |  | nm | Measurement @Peak (Fig.1) | 5 |
| Dominant Wavelength | λd |  | 631 |  | nm | Note 3 | 5 |
| Spectral Line Half-Width | Δλ |  | 20 |  | nm |  | 5 |
| Capacitance | C |  | 40 |  | PF | VF = 0, f = 1MHZ | 5 |

## CAD (KiCad official)

- Symbol: `LTST-C171KRKT`
- Footprint: `LED_SMD:LED_0805_2012Metric`
- 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files: `ltst-c171krkt-etched.step` / `ltst-c171krkt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ltst-c171krkt.step` / `ltst-c171krkt.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/8588893434060529665) (12 pp, sha256 `6991ed9d50f92b66`, retrieved 2026-10-19, 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/ltst-c171krkt-datasheet.pdf)