59-146UTD/TR8

Overview

The 59-146UTD/TR8 is a discontinued single-color white LED manufactured by Everlight Electronics Co Ltd. It features an 8-SMD, no-lead package with dimensions of 4.00mm length and 4.00mm width. The component utilizes a yellow lens with a diffused transparency to emit white light. Key electrical parameters include a typical forward voltage of 3.2V and a test current of 20mA. The optical performance specifies a luminous intensity of 11000mcd with a viewing angle of 50 degrees. The maximum height is 1.50mm.

Feature Summary

• Emits white light through a diffused lens configuration
• Designed for surface mount technology (SMD) installation
• Utilizes an 8-SMD no-lead package format

Applications

• General indicator lighting in electronic devices
• Discrete component illumination in consumer electronics

Procurement Notes

This component has been officially declared obsolete and is no longer in production as per the Product Change Notification dated February 25, 2015. Procurement must focus on verifying availability from secondary market sources or identifying qualified replacement parts. Buyers should confirm the authenticity of stock held by distributors, as original manufacturer supply is terminated. Cross-referencing datasheets for potential substitutes is required before finalizing any acquisition strategy.

Selection Notes

Designers seeking this specific part number must account for its end-of-life status. Selection processes should prioritize evaluating alternative components that match the 8-SMD footprint and white light emission characteristics. Verification of pin compatibility and thermal management requirements is essential when transitioning to substitute parts. Engineers should review the official obsolescence notice to ensure long-term supply chain stability for new designs.

Part Context

The 59-146UTD/TR8 belongs to Everlight's single-color LED product line, specifically categorized under discrete indicators. It represents a standard surface-mount solution for applications requiring compact white light sources. The component was widely used in industries demanding reliable SMD LEDs before its discontinuation. Its specifications reflect typical performance metrics for high-intensity white LEDs of its generation.

Replacement Considerations

QBLP679E-IWK-NW by QT Brightek is listed as a similar replacement part.