GBIC
Overview: GBIC (Gigabit Interface Converter) Transceivers are modular, hot‑swappable optical interfaces that convert electrical Gigabit Ethernet signals to optical signals, enabling fiber‑based connectivity between switches, routers, and servers. Though later replaced by SFP modules, GBIC transceivers remain widely used in legacy 1 Gbps networks across enterprise, telecom, and industrial environments.
Technical Overview
- Data Rate: 1.25 Gbps (1000 BASE standards)
- Transmission Distance: 550 m (850 nm MMF) to 120 km (1550 nm SMF)
- Wavelengths: 850 nm, 1310 nm, 1550 nm
- Connector Type: SC duplex
- Fiber Type: Multimode and Single‑mode
- Power Supply: +3.3 V or +5 V versions
- Standards Compliance: IEEE 802.3z (Gigabit Ethernet), Fibre Channel
- Hot‑Swappable: Yes (Gigabit Interface Converter MSA)
Main Features
- Gigabit‑speed transmission over optical fiber or copper
- Fully interchangeable with standard 1 Gb optical ports
- Supports MMF and SMF for short and long‑reach links
- High reliability and durability for telecom and industrial applications
- Compliant with Ethernet and Fibre Channel MSA specifications
- LED status indicators for link and activity status
- Backward compatible with Gigabit switch and media converter slots
Applications
- Gigabit Ethernet switch and router uplinks
- Fiber Channel and SAN connectivity links
- Campus and enterprise LAN backbones
- Telecom access network equipment
- Legacy systems migration where GBIC ports are still available
Related keywords: GBIC optic transceiver datasheet, 1 Gbps GBIC module, SC GBIC transceiver 1000BASE‑LX, 1000BASE‑SX/LX/LH GBIC module, legacy GBIC fiber converter.
FAQ – GBIC Transceivers Modules
1. What does GBIC stand for?
GBIC means Gigabit Interface Converter — a transceiver used to convert electrical signals to optical signals for Gigabit Ethernet or Fibre Channel networks.
2. What is the difference between GBIC and SFP?
The GBIC module is larger and uses an SC connector, while SFP is a smaller form factor with an LC connector but offers the same data rate (1 Gbps).
3. What data rates do GBIC modules support?
GBIC transceivers are designed for 1 Gbps data rates under IEEE 802.3z 1000BASE specifications.
4. Are GBIC transceivers still in use today?
Yes, they remain in service in legacy switches and industrial systems with existing GBIC slots where migration to SFP is not yet completed.
5. Which fiber types can GBIC transceivers support?
They support both Multimode (850 nm) and Single‑mode (1310 nm/1550 nm) fibers for short and long links up to 120 km.
6. Can I mix GBIC and SFP modules in the same network?
Yes, as long as both use compatible optical parameters and wavelengths; however, hot slots must support each respective form factor.
7. What connectors are used by GBIC modules?
Most GBIC transceivers use standard SC duplex connectors for fiber optic connections.
8. Are GBIC modules hot‑swappable?
Yes, they’re fully hot‑swappable, allowing maintenance or replacement without network downtime if the device supports this feature.