Cisco QSFP-40G-SR-BD: Efficient 40Gbps BiDi Transceiver for Data Centers

The Cisco QSFP-40G-SR-BD BiDi Transceiver is a cutting-edge 40 Gigabit Ethernet QSFP+ module designed for high-density data center and enterprise applications. Its unique Bi-Directional (BiDi) technology allows 40Gbps transmission over just two strands of multimode fiber, significantly reducing cabling complexity and costs. This makes it an ideal solution for upgrading existing 10Gbps infrastructure to 40Gbps without extensive fiber re-cabling, often connecting directly into Cisco Network Switch platforms.

Optimized Fiber Utilization

A key advantage of the QSFP-40G-SR-BD is its ability to achieve 40Gbps over existing duplex multimode fiber infrastructure (e.g., OM3/OM4). This eliminates the need for expensive and complex MPO/MTP cabling upgrades, maximizing the efficiency of your current fiber plant.

High Performance for Data Center Links

This transceiver provides robust 40 Gigabit Ethernet connectivity for short-reach applications, typically up to 100 meters over OM3 fiber and 150 meters over OM4 fiber. It ensures high bandwidth and low latency for critical data center interconnects and aggregation layers.

Seamless Integration and Hot-Swappable

As a QSFP+ form factor, the module is hot-swappable, allowing for quick and non-disruptive upgrades or replacements. It seamlessly integrates into compatible Cisco networking equipment, ensuring straightforward deployment and reliable operation.

Enhancing Network Aggregation

The QSFP-40G-SR-BD is vital for building efficient and scalable data center fabrics. It provides the high-speed optical links necessary for connecting core Cisco Network Switch devices and aggregation layers, indirectly supporting the high-bandwidth demands that can arise from dense Cisco Wireless AP deployments.

Cisco QSFP-40G-SR-BD BiDi Transceiver Detailed Parameters

Parameter Category	Parameter	Specification
Device Type	Model	QSFP-40G-SR-BD
	Product Type	QSFP+ (Quad Small Form-Factor Pluggable Plus) Transceiver
	Standard	40GBASE-SR-BD (Bi-Directional Short Reach)
	Connector	Duplex LC
Performance	Data Rate	40 Gbps (4 x 10 Gbps bi-directionally)
	Max Distance (OM3 MMF)	100 m (328 ft)
	Max Distance (OM4 MMF)	150 m (492 ft)
	Fiber Type	Multimode Fiber (MMF)
Optical Characteristics	Wavelengths	850 nm and 900 nm (bi-directional over 2 fibers)
	DDM/DOM Support	Yes (Digital Diagnostic Monitoring)
Power	Power Consumption	Typically < 3.5 W
	Voltage	3.3V
Physical Specifications	Dimensions (H x W x D)	13.4 x 18.4 x 72.4 mm (0.53 x 0.72 x 2.85 inches)
	Weight (Approximate)	30 g (0.07 lbs)
Environmental	Operating Temperature	0°C to 70°C (32°F to 158°F)
	Storage Temperature	-40°C to 85°C (-40°F to 185°F)
	Operating Humidity	10% to 90% non-condensing
Compliance	Standards	IEEE 802.3ba, SFF-8436 (MSA Compliant), SFF-8636
	Safety	Class 1 Laser Product