Xenpak transceiver, one of the first generation 10G fiber optic transceivers, supports all optical ports as defined in IEEE 802.3ae, supporting speed 10.3 Gb/s,9.95 Gb/s or4×3.125 Gb/s. XENPAK, remain very popular as the install base is large, while the newest SFP+ offer a much smaller form factor and the ability to offer 1G/10G combo ports on hardware for the first time. Also, X2 transceiver is the successor to the XENPAK.

Xenpak transceiver is protocol-specific: Either 10G Ethernet or 10G Fibre Channel versions are available. Xenpak transponders are used in datacom optical links only (not telecom). Its electrical interface to the host board is also standardized and is called XAUI (4 x 3.125 Gb/s). Xenpak transceiver is packed in a 4.8×1.4×0.7 inch package, used DFB laser components, Xenpak working distance via G652 multimode fiber could reach up to 10km, another important components inside the Xenpak is the MUX/DEMUX parts, it consume 50% of the power and result in the bigger size. There are various kinds of 10G Xenpak transceivers, typical types include the Xenpak 10GB SR , with 300 meters working span; Xenpak 10GB LR , with 10km working distance; Xenpak 10GB ER, with 40km working distance and the 80km Xenpak 10GB ZR.

Xenpak 10GB SR
XENPAK 10GB SR is a multimode 10GB fiber optic transceiver. It supports a link length of 26m on standard FDDI grade MMF. Up to 300m link lengths are possible when using 2000 MHz/km MMF (OM3).
Xenpak 10GB LR
Xenpak 10GB LR is 10GB single mode fiber optic transceiver. The XENPAK-10GB-LR is a highly integrated serial optical transponder module for high-speed, 10Gbit/s data transmission applications. 4×3.125Gbps Ethernet Signal Input by XAUI Interface.
Xenpak 10GB ER
Xenpak 10GB ER is 40km single mode transceiver for 10G networks. Xenpak 10GB ER transceivers is a 10GB hot swappable transceiver use duplex SC interface, it works with 1550nm single mode fiber for a max 40km working distance.
Xenpak 10GB ZR
The Cisco compliant XENPAK-10GB-ZR is a 10GBASE-ZR XENPAK 1550nm 80km transceiver module. The XENPAK-10GB-ZR transceiver module provides a low cost high-performance connection.

Ingellen is an original manufacturer of XENPAK transceiver, who has many years experiences in offering XENPAK transceiver. Ingellen's XENPAK transceivers are highly integrated, serial optical transponder modules designed for high-speed, 10Gbps data transmission applications. The modules are fully compliant with the IEEE 802.3ae standard making it ideally suited for 10GbE datacom applications. Futher, from Ingellen Corporation you can easily find other 10G modules like 10g sfp transceiver, 10g sfp+ transceiver, 10g xenpak transceiver, 10g xfp transceiver, 10gb x2 transceiver and so on.