TKQSFP-40G-SR4 40GBASE-SR4-QSFP+850NM Optical Transceiver

Takfly Group QSFP28+ SR4, a 4-Channel, Pluggable, Parallel, Fiber-Optic QSFP+ Transceiver for 40 Gigabit Ethernet, short-range multi-lane data communication and interconnect applications. Integrates 4 data lanes in each direction, each lane can run at 10.3125 Gbps up to 100 m with OM3 fiber or 150m with OM4 fiber. It delivers 40 Gbps bandwidth. Under a nominal wavelength of 850nm, it can run at multi-mode fiber systems. A 38 edge type connector at its electrical interface, while a12 fiber MTP/MPO connector at its optical interface. This prime module adpots Takfly Group’s advanced circuit and Vertical-Cavity Surface-Emitting Laser (VCSEL) technology, it promises long life, high performance, and consistent service.

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  • Four-channel full-duplex transceiver modules
  • Transmission data rate up to 10.3Gbit/s per channel
  • 4 channels 850nm VCSEL array
  • 4 channels PIN photo detector array
  • Low power consumption <1.5W
  • Housing isolated from connector ground
  • Operating case temperature 0°C to +70°C
  • 3V power supply voltage
  • RoHS 6 compliant
  • Hot Pluggable QSFP form factor
  • Maximum link length of 100m on OM3 Multi-mode Fiber (MMF)and 150m on OM4 MMF
  • Single MPO connector receptacle
  • Built-in digital diagnostic functions


This 4-channel full-duplex transceiver module is hot pluggable, was created for a wide range of applications, such as

  1. 40GBASE-SR4 40G Ethernet
  2. Datacom/Telecom switch & router connections
  3. Data Aggregation and Backplane Applications
  4. Proprietary Protocol and Density Applications

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