# LTST-C193KFKT-5A

**Lite On** · LED Indication - Discrete · 0603

LTST-C193KFKT-5A from Lite On, in a 0603. 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-c193kfkt-5a/render/states.json"}

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode (negative) terminal, marked CATHODE on the package drawing; DC forward current is limited to 30 mA and reverse voltage to 5 V. |
| 2 | A | passive | Anode (positive) terminal, shown as the + polarity on the package drawing; forward voltage is 1.70 to 2.30 V at IF = 5 mA, with a current-limiting series resistor recommended. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Lite On |
| Package | 0603 |
| 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 |  |  |  | 75 | mW | At Ta=25℃ | 3 |
| Peak Forward Current |  |  |  | 80 | mA | 1/10 Duty Cycle, 0.1ms Pulse Width; At Ta=25℃ | 3 |
| DC Forward Current |  |  |  | 30 | mA | At Ta=25℃ | 3 |
| Reverse Voltage |  |  |  | 5 | V | At Ta=25℃ | 3 |
| Operating Temperature Range |  | -30 |  | 85 | °C | At Ta=25℃ | 3 |
| Storage Temperature Range |  | -40 |  | 85 | °C | At Ta=25℃ | 3 |
| Infrared Soldering Condition |  |  |  | 260 | °C | For 10 Seconds; At Ta=25℃ | 3 |
| Luminous Intensity | IV | 11.2 |  | 45 | mcd | IF = 5mA | 5 |
| Viewing Angle | 2θ1/2 |  | 130 |  | deg | Note 2 (Fig.6) | 5 |
| Peak Emission Wavelength | λP |  | 611 |  | nm | Measurement @Peak (Fig.1) | 5 |
| Dominant Wavelength | λd |  | 605 |  | nm | IF = 5mA | 5 |
| Spectral Line Half-Width | Δλ |  | 17 |  | nm |  | 5 |
| Forward Voltage | VF | 1.7 |  | 2.3 | V | IF = 5mA | 5 |
| Reverse Current | IR |  |  | 10 | μA | VR = 5V | 5 |

## CAD (KiCad official)

- Symbol: `LTST-C193KFKT-5A`
- Footprint: `LED_SMD:LED_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `ltst-c193kfkt-5a-etched.step` / `ltst-c193kfkt-5a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ltst-c193kfkt-5a.step` / `ltst-c193kfkt-5a.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/8588941006155239424) (13 pp, sha256 `0ec880b9e9c8b103`, 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/ltst-c193kfkt-5a-datasheet.pdf)