TLDR4900

LED Indication - Discrete Overview

The TLDR4900 is a high-intensity red light-emitting diode manufactured by Vishay Semiconductor Opto Division. It features a 3 mm diameter clear package with a domed top lens, designed for exceptional brightness and very high intensity even at low drive currents. The device operates with a forward current of 50 mA and exhibits a typical forward voltage of 2 V at a test current of 10 mA. It emits red light at a wavelength of 648 nm with a millicandela rating of 25 mcd. The component utilizes a radial lead configuration suitable for through-hole mounting applications.

LED Indication - Discrete Feature Summary

• High-intensity red LED output in a 3 mm clear package
• Exceptional brightness performance at low drive currents
• Small viewing angle design for directional indication

LED Indication - Discrete Applications

• Panel indicator lights
• Status indication on electronic equipment
• General-purpose visual signaling devices

LED Indication - Discrete Procurement Notes

Verify the specific suffix or variant against the official Vishay datasheet to ensure correct wavelength and binning specifications. Confirm that the radial lead format matches the target PCB footprint requirements. Check RoHS compliance status and moisture sensitivity level prior to assembly planning. Ensure the forward current ratings align with the driving circuit capabilities to prevent thermal overstress during operation.

LED Indication - Discrete Selection Notes

Select this component when a compact, high-brightness red indicator is required for panel mounting. The 3 mm size offers a balance between visibility and board space efficiency. Consider the small viewing angle characteristic if focused illumination is necessary rather than wide-area diffusion. Evaluate the 2 V forward voltage drop against the available supply voltage headroom in the design.

LED Indication - Discrete Part Context

The TLDR4900 belongs to Vishay's family of high-intensity discrete LEDs designed for visual indication. It complements other components like the TLHR4900 series within the manufacturer's optoelectronics portfolio. These devices are engineered for reliability in industrial and consumer electronics environments where clear visual feedback is critical for system monitoring and user interaction.

LED Indication - Discrete Replacement Considerations

Public confirmed substitute part numbers are not provided in the source documentation. Consult the official Vishay datasheet for direct cross-reference recommendations or equivalent alternatives from other manufacturers that match the 3 mm radial form factor and 648 nm emission spectrum.