The JBX02189 1000BASE-BX40-U SFP Transceiver represents a reliable, high-performance solution for organizations requiring extended-reach fiber optic connectivity. This module is specifically engineered as a Cisco MA-SFP-1GB-BX40-U compatible alternative, providing seamless integration into existing Cisco infrastructure without expensive OEM pricing. Key Technical Specifications: This single-mode fiber transceiver operates at 1GB data rates over distances up to 40km, utilizing dual wavelengths (1310nm upstream, 1490nm downstream) for simultaneous bidirectional communication. The 9/125 micrometer fiber core ensures optimal signal transmission with minimal dispersion, while the simplex LC/UPC connector provides industry-standard, low-loss connectivity. Qualified to SFF-8472 specifications and extending beyond IEEE 802.3ah standards, this module delivers enterprise-grade performance. Safety & Compliance: Comprehensive safety certifications include Class 1 Laser designation, TUV, UL/FDA approval (21CFR 1040.10), and RoHS/ELV compliance (EU directive 2002/95/EC). The module operates reliably across 0-70°C temperature ranges, accommodating diverse deployment environments from controlled data centers to outdoor installations. Applications & Benefits: Ideal for network backbone connections, metro-area networking, and campus interconnects, this transceiver eliminates costly fiber runs while maintaining exceptional signal integrity. Custom brand programming ensures compatibility with multi-vendor environments. The 90-day limited warranty and convenient free standard shipping on orders exceeding $99 provide additional value and peace of mind. Chip Configuration & Materials: Constructed with premium metal case housing and integrated laser transmitter technology, this module ensures durability and longevity in demanding network environments. Manufactured in Vietnam and China using quality-controlled processes, the JBX02189 delivers consistent, reliable performance across thousands of deployments worldwide.