Cisco GLC‑EZX‑SM‑120 Compatible 1000BASE-EZX SFP Transceiver utilizes an LC duplex connector that provides long-reach gigabit Ethernet over single-mode fiber for distances of up to 120 km. This is achieved using a 1550 nm wavelength. The data rate in this model is 1.25 Gbps, featuring a DFB diode laser and a photodiode with a PIN design for optimum stability and optical performance.
This transceiver is fully interoperable with Cisco GLC‑EZX‑SM‑120, Juniper Networks SFP‑1GE‑EZX‑120, Arista Networks SFP‑1G‑EZX‑120, Brocade E1MG‑EZX‑120, and Alcatel‑Lucent SFP‑GIG‑EZX, ensuring dependable compatibility across multi‑vendor environments.
Each transceiver also supports Digital Diagnostic Monitoring (DDM) through a 2-wire interface, allowing live feedback on voltage, temperature, and optical power. At just 3.3 volts and hot-swappable, these units are ruggedized to provide low EMI, ESD protection, and an operating current of less than 1 watt. These units are ideal for use with Internet Service Providers (ISP), Enterprise LANs, SAN networks, and data centers. Compliance is ensured with IEEE 802.3z and SFP MSA specifications for dependable and consistent gigabit Ethernet connectivity.
Specifications
| Specification | Description |
| Brand | BYXGD |
| Compatible Model | Cisco GLC-EZX-SM-120 |
| Form Factor | SFP |
| Data Rate | 1.25 Gbps |
| Wavelength | 1550 nm |
| Transmission Distance | Up to 120 km |
| Connector Type | Duplex LC/UPC |
| Fiber Type | Single-Mode Fiber (SMF) |
| Optical Components | DFB Laser, 1550 nm |
| Receiver Type | PIN Photodiode |
| Transmitter Output Power (TX Power) | 0 dBm to +5 dBm |
| Receiver Sensitivity | < -32 dBm |
| Receiver Overload | > -3 dBm |
| Optical Budget | 32 dB typical |
| Digital Diagnostic Monitoring (DDM/DOM) | Supported (per SFF‑8472) |
| Power Supply Voltage | 3.3 V DC |
| Power Consumption | ≤ 1 W |
| Bit Error Rate (BER) | < 1 × 10⁻¹² |
| Operating Temperature | 0 °C to 70 °C (32 °F to 158 °F), Commercial |
| Storage Temperature | -40 °C to 85 °C (-40 °F to 185 °F) |
| Relative Humidity | 5 % to 95 %, non‑condensing |
| Laser Safety Classification | Class 1 (IEC 60825‑1, FDA 21 CFR 1040.10) |
| Protocols Supported | IEEE 802.3ah 1000BASE‑BX, SFF‑8472 MSA Compliant |
| Hot‑Pluggable | Yes |
| EMI/ESD Protection | Excellent EMI performance and ESD resistance |
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