QDD-400G-SR4.2-BD Cisco Compatible 400G 150M MMF  QSFP-DD  module

Cisco
QSFP-DD
400G
BiDi
150 m
QDD-400G-SR4.2-BD Cisco Compatible 400G 150M MMF  QSFP-DD  module

Cisco compatible QDD-400G-SR4.2-BD - Key Features

  • Compatibility: Cisco
  • Media Type: 4 Lanes of Multi-Mode Fiber (MMF)
  • Connector: MTP/MPO-12 (APC)
  • Fiber Count: BiDi
  • Maximum Distance: 150 m
  • Guaranteed Link Budget: 2 dB
  • Tx Wavelenght: 850 nm
  • Supported Data Rate: 425 Gbps
  • DDM/DOM: Supported
  • Forward Error Correction (FEC): Host FEC Supported
  • Temperature Range: Standard 0°-70°C

Cisco QDD-400G-SR4.2-BD Price

SKUSKU:BIDI-400G-QSFP-DD-150-CI
Lead timeMade to Order - 2 Weeks
Standard recommended retail price ex VAT:
1117.20
Choice of 0+
Telecoms & Integrators Globally

Cisco compatible QDD-400G-SR4.2-BD Specifications

Form Factor
QSFP-DD
Modulation
PAM4 (Pulse Amplitude Modulation 4-level)
Media Type
4 Lanes of Multi-Mode Fiber (MMF)
Connector
MTP/MPO-12 (APC)
Fiber Count
BiDi
Maximum Distance
150 m
Guaranteed Link Budget
2 dB
TX Wavelenght
Dual 850/900 nm
RX Wavelenght
Dual 850/900 nm
Supported Data Rate
425 Gbps
Supportet Ethernet Applications
400G Ethernet (425 Gbps)
DDM/DOM
Supported
Forward Error Correction (FEC)
Host FEC Supported
CDR (Clock and Data Recovery) chip
Supported
Transmitter Type
VSCEL Laser
Tx Wave Bandwidth
18 nm (900–918 nm) / 19 nm (844–863 nm)
Average Launch Power (Min) Each Lane
-6.5 dBm
Average Launch Power (Max) Each Lane
4 dBm
Extinction Ratio (Min)
3 dB
Receiver Type
PIN photodiode
RX Wave Bandwidth
18 nm (900–918 nm) / 19 nm (844–863 nm)
Average Receiver Sensitivity (Min) Each Lane
-8.5 dBm
Average Receiver Sensitivity (Max) Each Lane
4 dBm
Receiver Overload
5 dBm
Temperature Range
Standard 0°-70°C
Storage Temperature
-40° to 85°C
Relative Humidity
5 to 85%
Power Consumption (Max)
12 W
Power
+3.3V single power supply
Compliance
CE;RoHS;Class 1 FDA and IEC60825-1 Laser Safety Compliant;400GBASE-SR4.2;IEEE 802.3cm;IEEE 802.3bs;CMIS V4.0;QSFP-DD MSA

Cisco compatible QDD-400G-SR4.2-BD Datasheet

v2

Complete technical specifications and product details

Updated:Jan 16, 2026Format:PDF

Cisco compatible QDD-400G-SR4.2-BD Description

QDD-400G-SR4.2-BD is a 400GBASE-SR4 Cisco Compatible QSFP-DD (Quad Small Form-Factor Pluggable - Double Density) Bi-Direction optical Transceiver designed for operation over Multi-Mode Fiber (MMF). The module accepts 8x 50G (400GAUI-8) host electrical data and transmits them in two groups of optical Bi-Directional lanes (each group contains 4 pairs of optical lane) to allow optical communication over optical Multi-Mode fibers. Reversely, on the receiver side , the module accepts 8 sets of optical input signal and converts them to 8 channels of electrical data. The Cisco compatible has a minimum guaranteed optical budget of 2 dB, which in most cases is enough to reach 150 m distance over OM5 multi-mode fiber. However, distance is just indicative parameter for comfort of identification that is calculated by taking into account minimal optical budget and average attenuation of optical cabling in industry. QDD-400G-SR4.2-BD uses top quality VCSEL (Vertical Cavity Surface Emitting Laser) transmitter 850nm for first lane and 908nm for second. Modules also uses 400Gb/s PIN photodiode receiver. The Cisco compatible BIDI 400GBASE-SR4 supports DDM/DOM optical diagnostics that provide real-time diagnostic information about the present operating conditions. It operates in Standard 0°-70°C temperature range and has MTP/MPO-12 interface.

The BIDI 400GBASE-SR4 QSFP-DD support up to 425 Gbps data rate and is designed for 400G Ethernet application, typically used for QSFP-DD SR4.2 to QSFP- DD SR4.2 point to point communication and QSFP-DD SR4.2 (BIDI-400G-QSFP-DD-150) to 4x QSFP28 SR1.2 (BIDI-100G-QSFP28-151) breakout communication. Optical transceiver is multi-purpose module used in number of different places of today’s networking. Consequently, most popular use cases are in Internet Service Provider (ISP), Mobile Operator and Data Center Core Networks.

QDD-400G-SR4.2-BD compatible transceiver is CE/RoHS certified and is compliant with product safety standards. It is fully compliant to QSFP-DD Multi Source Agreement (MSA), CMIS 4.0, IEEE 802.3bs 400 Gbps specification and 400GBASE-SR4. Consequently, compliance to above standards guarantees that module is compatible and works with majority of networking equipment, where is not implemented special algorithm for protection against third party modules. However – our technical team has accumulated deep expertise in custom-encoded Cisco firmware’s for BIDI 400GBASE-SR4 QSFP-DD transceiver in order to make it work in almost any brand equipment. We will be glad to know your requirements - Contact Us.