Transceivers: Modular connection solutions for your network
Transceivers are key components of modern network technology - they enable flexible data transmission via copper or fiber optics and can be integrated directly into switches, routers, or firewalls. With the right transceiver modules, you can expand your infrastructure with Gigabit or high-speed connections - exactly as needed.
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LANCOM SFP-SR-MPO100, 100GBASE-SR4 QSFP module for QSFP28 ports on LANCOM switches, supports 50/125 m OM3 and OM4 multimode fiber incl. MPO connector, max. distance 100 m, compatible
1-port 1000BaseCWDM Small Form Factor Pluggable GBIC (mini-GBIC, connector type: LC) - 1590nm Wavelength, 40km. Diagnostic Monitoring Interface. AVAYA, compatible
Allied Telesis SP10SR/I - 10GBASE-SR SFP+ Optical Transceiver - 10 Gbps - 850 nm - Multimode Fiber - Duplex LC - Up to 300 m - Industrial Temperature -40 to +85 C - TAA Compliant - compatible
OC48/STM-16 SFP - IR1 transceiver with LC connector (1310 nm) - for use with NTHW46xx, compatible
NVIDIA InfiniBand NDR200 Optical Transceiver, 200 Gb/s, OSFP, SR2, MPO12 APC, 850 nm MMF, up to 30 m, flat top, compatible
1000BASE-T SFP, copper GbE pluggable, RJ45 connector, up to 100 meters over Category-5, 5e, 6 and 6a unshielded twisted pair cable , compatible
1000Base BX-U LC, 10 Km, TX: 1310 nm, RX: 1490 nm SFP transceiver, compatible
SFP, Gigabit Ethernet CWDM Optics, 1550nm for 80 km Transmission on SMF, compatible
CIENA - SFP+ transceiver module - 10GbE - 10GBase-DWDM - LC single-mode - up to 40 km - channel: 30 - 1553.33 nm
GE SFP LX Plug In, Module, Spare, MX, A2/A10, M320/T640/T320, M120, compatible
What is a transceiver and how does it work?
A transceiver (transmitter + receiver) sends and receives data via network cables - in the form of light (fiber optic) or electrical signals (copper). It is plugged into standardized ports such as SFP, SFP+, or QSFP and is often hot-swappable, meaning it can be replaced during operation.
Typical applications:
- Connecting network components over long distances
- Upgrading existing networks to higher bandwidths
- Integration into modular switches, firewalls, or storage systems
Overview of common transceiver formats
SFP & SFP+:
- SFP module: The standard for 1 Gbit/s connections
- SFP+ module: Supports up to 10 Gbit/s – ideal for servers or core switches
- SFP S / SFP SFP+: Combinations or product names in manufacturer documentation, often used synonymously
Other formats:
- QSFP/QSFP28: For 40G, 100G, or 400G applications
- SFP28: 25G transceiver for modern data centers
Fiber optic transceivers vs. copper
Fiber optic transceivers enable interference-free transmission over long distances - ideal in data centers, between buildings, or in EMC-critical environments. In comparison, copper transceivers are suitable for short distances (up to 100 m) and standardized cabling.
Advantages of fiber optics:
- High bandwidths (10G, 25G, 100G+)
- Low latency
- Insensitive to electromagnetic interference
When selecting a fiber optic transceiver module, wavelength, distance, and fiber type (single-mode vs. multi-mode) should be taken into account.
Manufacturer compatibility: Cisco, Juniper, Aruba, Dell, Lenovo, and many more
Transceivers are often manufacturer-specific. it-market offers a wide selection of compatible modules for the following systems:
- Cisco transceivers: e.g., for Catalyst, Nexus, or Meraki series
- Juniper transceivers: for EX, QFX, and MX platforms
- Aruba transceivers: for Aruba switches or Instant-On solutions
- Dell & Lenovo transceivers: specially validated modules for PowerSwitch and ThinkSystem environments
- And many other manufacturers
Transceivers: new, used, and refurbished at it-market
At it-market, you will find tested network transceivers for all common manufacturers and requirements. Whether you need an SFP module, a 10G SFP+, a QSFP, or a fiber optic transceiver, we offer new, used, and refurbished transceivers with tested quality.
Benefit from:
- 3-year warranty for companies
- Up to €2,500 buyer protection
- Short delivery times
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