91-21UBC/C430/TR10

Overview

The 91-21UBC/C430/TR10 is a surface-mount infrared LED emitter manufactured by Everlight Electronics. It features a dome-shaped lens and operates within a temperature range of -40°C to +85°C. Key electrical parameters include a forward current of 20 mA, a forward voltage of 1.2 V, and a power rating of 130 mW. The device emits at a wavelength of 940 nm with a radiation intensity of 5 mW/sr. Its physical dimensions are 2.5 mm x 2.2 mm x 2.7 mm, packaged in reels for automated assembly.

Feature Summary

• Infrared emission optimized for sensing applications
• Surface-mount design for automated PCB assembly
• Dome lens shape for directional light output

Applications

• Proximity sensors
• Motion detection systems
• Optical encoders

Procurement Notes

Verify the specific suffix (TR10) against the manufacturer's latest datasheet to confirm reel quantity and tape specifications. Ensure compatibility with standard SMT reflow profiles. Confirm RoHS compliance status through official documentation prior to integration into regulated products.

Selection Notes

Select this component when a compact 940 nm IR source is required for space-constrained designs. Evaluate the 5 mW/sr intensity against link budget requirements. Consider the 2.5x2.2 mm footprint for board layout efficiency compared to larger through-hole alternatives.

Part Context

This part belongs to Everlight’s discrete infrared LED series designed for general-purpose optoelectronic applications. It complements phototransistors like the PT91-21B in reflective sensor pairs. The product line emphasizes reliability and consistent spectral output for industrial and consumer electronics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Cross-reference with Everlight’s portfolio for similar 940 nm SMD emitters if direct substitution is required.