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Cisco QSFP transceiver module with dual LC ports, matte metal finish

Cisco Systems, Inc.

Cisco Systems, Inc. QSFP-40G-SR-BD= 40 Gbps SFP transceiver

SKU CH-K31X-CCAGY MPN QSFP-40G-SR-BD=

A hot-swappable 40 Gbps QSFP transceiver for 40 Gigabit Ethernet over LC multi-mode fibre up to 492 ft, operating at 832 to 918 nm and +10 to 70 °C

  • Port count1 × 40Gb Ethernet - LC Multi-Mode x 2
  • Product typeQSFP Transceiver Modules
  • Optical wavelength832–918 nm
  • Maximum range492 ft (150 m)
  • Transfer speed40 Gbit/s
  • Temperature range+10 to 70 °C (50 to 158 °F)
  • 40 Gbps throughput for high-density links
  • Hot-swappable QSFP module installs without downtime
  • Dual LC multi-mode ports reach 492 ft
  • Operates reliably from 10 to 70 °C
  • Certified on Cisco 40G ports for proven interoperability

40 Gbps BiDi QSFP module

This Cisco QSFP-40G-SR-BD= transceiver delivers 40 Gbps over duplex LC multi-mode fibre using a single module. It operates across the 832 to 918 nm wavelength range and reaches up to 492 ft. The hot-swappable QSFP form factor plugs directly into a 40 Gigabit Ethernet Cisco QSFP port. Certified testing on Cisco hardware ensures reliable operation.

Ideal for short-reach 40G links

Network teams extending 40 GbE connections within a rack or between adjacent racks over existing duplex multi-mode cabling will find this module a direct fit. It suits environments that stay within the +10 to 70 °C operating window. Builders needing single-mode reach, higher port density, or non-Cisco qualified optics should evaluate other form factors.

492 ft multi-mode reach

The 492 ft maximum distance over LC multi-mode fibre is the specification that determines whether this transceiver meets the link-length requirement. Longer runs or single-mode infrastructure require a different optical solution.

How it compares

Measured against everything we stock in SFP & SFP+ Transceiver Modules, at today’s prices. Recalculated every night.

Price $766.99
Pricier than about 90% of the 1,471 comparable items (median $138.99).

Specifications

Product
Brand nameCISCO
Model nameQSFP-40G-SR-BD=
Product typeQSFP Transceiver Modules
Performance
Transfer speed40 Gbit/s
Connectivity
Optical wavelength832–918 nm
Maximum range492 ft (150 m)
Ports & slots
Port count1 × 40Gb Ethernet - LC Multi-Mode x 2
Size & build
Product dimensions0.53 in × 0.72 in × 2.85 in
Product weight0.22 lb (0.1 kg)
Shipping weight0.14 kg
Package size127 × 51 × 51 mm
Environment & compliance
Temperature range+10 to 70 °C (50 to 158 °F)

Questions about this item

Will the LC duplex connectors on this QSFP-40G-SR-BD= need periodic cleaning or replacement?

The dual LC multi-mode connectors should be inspected and cleaned with a fibre scope and lint-free wipes whenever links are added or removed; no scheduled replacement interval is defined by the manufacturer.

What is the first limit reached when this module runs continuously at 40 Gbps in a 70 °C environment?

The operating-temperature ceiling of 70 °C (158 °F) is the primary sustained-use limit; exceeding it can trigger thermal shutdown.

How much heat does the QSFP-40G-SR-BD= add to a switch chassis when it operates all day?

The transceiver is hot-swappable and draws power from the host QSFP port; Cisco does not publish a standalone heat-dissipation figure for this module.

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