This document details the features and characteristics of the VISHAY TLDR5400 LED
The TLDR5400 is a high‑intensity red LED built with double‑heterojunction GaAlAs on GaAs technology and offered in a 5 mm tinted‑diffused package with a wide radiation angle. It is suitable for bright ambient lighting, battery‑powered equipment, information displays, portable devices, and telecommunication indicators.
The datasheet provides comprehensive optical and electrical characteristics, including luminous intensity, wavelength, forward voltage, current ratings, thermal limits, and package dimensions, as well as absolute maximum ratings and application guidance.
| Package type | 5 mm (T‑1%) tinted diffused |
|---|---|
| Luminous intensity (typ) | 35–70 mcd @ 20 mA |
| Dominant wavelength | 648 nm @ 20 mA |
| Peak wavelength | 650 nm @ 20 mA |
| Forward voltage (typ) | 1.8 V @ 20 mA |
| Reverse voltage | 6 V |
| DC forward current (max) | 50 mA |
| Surge forward current | 1 A (≤10 µs) |
| Junction temperature (max) | 100 °C |
| Operating temperature range | -40 °C to +100 °C |
| Storage temperature range | -55 °C to +100 °C |
| Thermal resistance (junction‑to‑ambient) | 350 K/W |
| Angle of half intensity | 30° |
| Reverse current | 10 pA @ 6 V |
The dominant wavelength is 648 nm measured at a forward current of 20 mA.
The device is rated for a maximum DC forward current of 50 mA.
The TLDR5400 can operate from –40 °C up to +100 °C.
Typical forward voltage is 1.8 V (maximum 2.2 V) at a forward current of 20 mA.