TLLY5401

LED Indication - Discrete Overview

The TLLY5401 is a single-color LED manufactured by Vishay Semiconductor Opto Division. It features a yellow tinted diffused lens with a dome shape and a 5 mm (T-1 3/4) package size. The component operates at a forward current of 2 mA with a forward voltage of 1.9 V, delivering an optical intensity of 4.0 to 7.0 mcd. It has a power rating of 20 mW and emits light at a wavelength of 589 nm. Designed for through-hole mounting, the unit measures 8.7 mm in height.

LED Indication - Discrete Feature Summary

• Yellow tinted diffused lens design
• Dome-shaped 5 mm package configuration
• Through-hole mounting style

LED Indication - Discrete Applications

• Indicator lights
• Panel displays
• Control panels

LED Indication - Discrete Procurement Notes

Verify the exact part number against official Vishay documentation to ensure compatibility with specific circuit requirements. Confirm that the yellow tinted diffused variant matches the intended optical application. Check RoHS compliance status as detailed in the manufacturer's datasheet before finalizing procurement decisions.

LED Indication - Discrete Selection Notes

Select this component when a visible yellow indicator is required for panel applications. Ensure the circuit supports a 2 mA forward current and 1.9 V forward voltage drop. Verify that the through-hole T-1 3/4 package fits the board layout constraints and that the diffused lens provides the necessary visibility angle.

LED Indication - Discrete Part Context

This component belongs to Vishay's standard 5 mm LED product line. It shares physical dimensions with other variants in the series but differs in optical characteristics such as color and intensity. The TLLY5401 specifically targets applications requiring a distinct yellow visual signal within electronic assemblies.

LED Indication - Discrete Replacement Considerations

Consult Vishay's official substitution guide for verified equivalent parts. Generic replacements may not match the specific 589 nm wavelength or 4.0-7.0 mcd intensity range. Ensure any substitute maintains the same 5 mm through-hole package and electrical parameters.