Contextual Info: HFE4211 High Power Fiber Optic LED FEATURES • Cost effective plastic PCB mountable package . Operates with 100/140, 85/125, 62.5/125, and 50/125 micron fiber cable sizes • Choices of LED output power • High optical efficiency . Optical port Interfaces directly with standard ST*

Contextual Info: Not recommended for new designs see HFD4227-022 HFE4217 High Power Fiber Optic LED for Token-Ring Applications FEATURES • Industry standard ST fiber connector • 850 nm GaAIAs LED • Designed to meet IEEE Token-Ring standard 802.5J specification •