40 Gigabit QSFP+ Transceivers

QuickTreX® 40 Gigabit Multimode MTP/MPO QSFP+ Fiber Optic Transceiver - Hot Pluggable and Cisco Compatible - 300m w/OM3 / 400m w/OM4 at 850 nm - 40BASE-CSR4

SKU:QT-40G-QSFP-850NM-300M-CSR4-MP

5.0/5 (19 Reviews)
$99.85
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10 Unit(s) available
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estimated lead time
Estimated Lead Time
Typically Ships Within 24 Business Hours
(Cut off time is 2 PM EST)
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expected receive dates
Receive Between
June 5-12, 2026

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The QT-40G-QSFP-850NM-300M-CSR4-MP is a parallel 40Gbps Quad Small Form-factor Pluggable (QSFP) optical module that provides increased port density and total system cost savings.  The QSFP is full-duplex optical module offers 4 independent transmit and receive channels, each capable of 10Gbps operation for an aggregate bandwidth of 40Gbps 100m on OM3 Multimode Fiber (MMF) and 150m on OM4 MMF. 

An optical fiber ribbon cable with an MPO/MTP connector at each end plugs into the QSFP module receptacle. The orientation of the ribbon cable is “keyed” and guide pins are present inside the module’s receptacle to ensure proper alignment. The cable usually has no twist (key up to key up) to ensure proper channel to channel alignment. Electrical connection is achieved though a z-pluggable 38-pin IPASS® connector. 

The module operates from a single +3.3V power supply and LVCMOS/LVTTL global control signals such as Module Present, Reset, Interrupt and Low Power Mode are available with the modules. A 2-wire serial interface is available to send and receive more complex control signals and to obtain digital diagnostic information. Individual channels can be addressed and unused channels can be shut down for maximum design flexibility.  

The QT-40G-QSFP-850NM-300M-CSR4-MP is designed with form factor, optical/electrical connection and digital diagnostic interface according to the QSFP Multi-Source Agreement (MSA). It has been designed to meet the harshest external operating conditions including temperature, humidity and EMI interference. The module offers very high functionality and feature integration, accessible via a two-wire serial interface.     

FEATURES

  • 4 independent full-duplex channels
  • Up to 11.2Gbps per channel bandwidth
  • Aggregate bandwidth of > 40Gbps
  • MTP/MPO Male optical connector (Requires a Female MPO/MTP Connector with Method B Polarity)
  • QSFP MSA compliant
  • Digital diagnostic capabilities
  • Capable of over 300m transmission on OM3 MMF (Multimode Fiber) and 400m on OM4 MMF
  • CML compatible electrical I/O
  • Single +3.3V power supply operating
  • TX input and RX output CDR retiming
  • Built-in digital diagnostic functions
  • Temperature range 0°C to 70°C
  • Silver with Beige Tab
  • RoHS Compliant Part

Applications: 

  • Rack to rack
  • Data centers
  • Metro networks
  • Switches and Routers
  • Infiniband 4x SDR, DDR, QDR

Resources

PDF Document
General: QT-40G-QSFP-850NM-300M-CSR4-MP SPECS
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Product Reviews (19)

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MK
M Kramer

02/06/2025 10:28:00 PM

LANshack's customer service and tech support is great! Easy to work with and the products were delivered on time!

G
Guest

01/02/2025 07:14:00 AM

Great product and service

C
customer

08/26/2024 10:39:00 PM

Easy to work with and shipment came exactly as ordered.

ES
Eric S.

08/04/2024 03:32:00 PM

Item was what I ordered, came well packed.

F
FARLENG

06/27/2024 11:01:00 PM

Very good experience and delivered quickly and easily.

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