QDD-2X100-SR4-S Cisco Compatible 2x100GBASE-SR4 Module

# Key Highlights
  • Type: 2x100GBASE-SR4 QSFP28-DD
  • Compatibility: Cisco Compatible
  • Tx/Rx Wavelength: 8x850nm/8x850nm
  • Laser: VSCEL
  • Modulation: NRZ
  • Fiber Type: Multi-Mode Fiber (MMF)
  • Connectors: MTP/MPO-24
  • Optical Budget: 1.9dB
  • Max. Distance: 100 m (OM4) / 70 m (OM3)
  • Data Rate: 2×103.125 Gbps
  • DDM/DOM: Supported
  • Power Consumption: ≤ 4W
  • Temperature: Standard 0° – 70°C
# Pricing & Ordering
SKU: 2x100G-QDD-100-CI


Standard recommended retail price without VAT.

Lead Time: Below 1 Week in EU Countries
# Quality Assurance

Because of our comprehensive Testing Program, we are confident on quality of our products. Such approach empower us to cover all our products with:

# Key Technical Data
Media Type:

Multi-Mode Fiber (MMF)



Supported Data Rate:

2×103.125 Gbps

Supported Applications:

2x100G Ethernet (206.25 Gbps)


NRZ (Non-return-to-zero)



CDR (Clock and Data Recovery) chip


Minimum Optical Budget:

1.9 dB

Maximum Distance:

100 m (OM4) / 70 m (OM3)

TX Wavelength:

8×850 nm

Tx Wavelength Bandwidth:

20 nm (840-860 nm)

Transmitter Type:


RX Wavelength:

8×850 nm

Rx Wavelength Bandwidth:

20 nm (840-860 nm)

Receiver Type:

PIN photodiode

Average Launch Power (Min) Each Lane:

-8.4 dBm

Average Launch Power (Max) Each Lane:

2.4 dBm

Extinction Ratio (Min):

3 dB

Average Receiver Sensitivity (Min) Each Lane:

-10.3 dBm

Average Receiver Sensitivity (Max) Each Lane:

2.4 dBm

Receiver Overload:

3.4 dBm

Temperature Range:

Standard 0°-70°C

Storage Temperature:

-20° to 85°C

Relative Humidity:

0 to 85%

Power Consumption:





CMIS V4.0, IEEE 802.3bm 100GBASE-SR4, QSFP-DD MSA, RoHS-6, CE, SFF-8665

# Product Documentation
Cisco Compatible QDD-2X100-SR4-S Datasheet - 2x100G-QDD-100

Our version of Cisco Compatible QDD-2X100-SR4-S Datasheet is based on our product 2x100G-QDD-100. When You will order it will be encoded to be compatible with Cisco equipment and it will be labeled with part number: 2x100G-QDD-100-CI, where CI means Cisco Compatible. Above You can download datasheet of our 2x100G-QDD-100 product.

# Product Description

QDD-2X100-SR4-S is Cisco Compatible 2x100GBASE-SR4 QSFP28-DD (Quad Small Form-Factor Pluggable Double Density) Transceiver designed for operation over multi-mode optical fiber. 2x100G SR4 has a QSFP-DD form factor which supports eight electrical interface lanes which can operate in 25G NRZ encoding mode resulting in 200G (8x25G) data rate. Technically Cisco compatible 2x100GBASE-SR4 QSFP28-DD modules consists of two 100G transceivers in one housing which can provide great flexibility for operators in their migration path towards QSFP-DD gear and 400G PAM4 infrastructure and help to make necessary interconnections with high density legacy 100GBASE-SR4 QSFP28 interfaces which use NRZ encoding. Module has a minimum guaranteed optical budget of 1.9 dB, which in most cases is enough to reach 100 m over OM4 multimode fiber, or 70 m over OM3 multimode fiber. However, distance is just an indicative parameter calculated for comfort of identification. Eventually we calculate distance taking in account minimal optical budget and average attenuation of optical cabling in industry. 2x100G SR4 uses 8 channel 25Gb/s VCSEL (Vertical Cavity Surface Emitting Laser) (850 nm) transmitters and 8 channel 25Gb/s PIN photodiode receivers. Module supports DDM/DOM optical diagnostics, which provide diagnostic information about the present operating conditions. QDD-2X100-SR4-S operates in standard 0°-70°C temperature range and has an MPO/MTP-24 connector. 2x100GBASE-SR4 QSFP-DD supports 2×103.125 Gbps data rate and such applications as 2x100G Ethernet (206.25 Gbps). QDD-2X100-SR4-S optical transceiver is a multi-purpose module which can be used in various scenarios in today’s networking environment. Most popular applications are Telecom Metro/Core, Mobile Operator Core or Data Center Core Networks.

To ensure compatibility we have tested our compatible version of Cisco QDD-2X100-SR4-S Transceiver in latest platforms of Cisco networking equipment, which allows us to encode transceiver EEPROM memory to be compatible and work seamlessly with Cisco platforms. Transceivers is also CE/RoHS certified, compliant with product safety standards and is fully compliant to QSFP-DD Multi Source Agreement (MSA), IEEE 802.3bm 100GBASE-SR4 standard. We will be glad to know your requirements – Contact Us.