The JBX01965 100BASE-BX20-D SFP Transceiver represents a robust solution for enterprise and carrier-grade optical networking applications. This extended-reach simplex transceiver module is specifically engineered to support 100BASE-BX20-D connections over single-mode fiber (SMF), delivering reliable data transmission across 20-kilometer distances with exceptional signal integrity. **Technical Specifications & Performance** This optical transceiver operates at 100MB data rates using advanced BiDi (Bidirectional) technology that surpasses standard IEEE 802.3ah requirements. The simplex LC/UPC connector design ensures secure, low-loss fiber connections, while the 9/125 singlemode fiber core accommodates long-distance transmission without signal degradation. With an operating temperature range of -40°C to 85°C, the module maintains optimal performance across demanding environmental conditions. **Cisco Compatibility & OEM Replacement** The JBX01965 serves as a direct compatible replacement for Cisco's GLC-FE-100BX-D-RGD module, enabling seamless integration into existing Cisco infrastructure. This compatibility eliminates complex configuration requirements and reduces deployment time for network administrators and IT professionals. **Build Quality & Safety Compliance** Constructed with a metal case housing and integrated laser transmitter, this transceiver delivers industrial-grade durability. Comprehensive safety certifications include Class 1 Laser classification, UL/FDA compliance (21CFR 1040.10), TUV certification, and full RoHS/ELV directive adherence (EU 2002/95/EC). These certifications ensure safe operation in professional networking environments. **Applications & Use Cases** Ideal for campus network interconnections, metropolitan area networks (MANs), and carrier-grade backbone links. Perfect for IT professionals upgrading existing systems, data center operators requiring extended-reach connections, and telecommunications providers seeking cost-effective optical solutions. **Quality Assurance** Each module includes a 90-day limited warranty and qualifies to SFF-8472 extended-reach specifications. Custom brand programming is available for enterprise deployments. Free standard shipping on orders over $99, with fulfillment from strategically located warehouses in Danville, CA and Beaufort, SC.