Cisco Compatible QSFP-100G-B20D4-I Transceiver

Cisco
QSFP28
100G
BiDi
20 km
Cisco Compatible QSFP-100G-B20D4-I Transceiver

Cisco compatible QSFP-100G-B20D4-I - Key Features

  • Compatibility: Cisco
  • Media Type: Single-Mode Fiber (SMF)
  • Connector: Single LC/UPC
  • Fiber Count: BiDi
  • Maximum Distance: 20 km
  • Guaranteed Link Budget: 10.2 dB
  • Tx Wavelenght: 1270 nm
  • Supported Data Rate: 103.125 Gbps
  • DDM/DOM: Supported
  • Forward Error Correction (FEC): Host FEC Supported
  • Temperature Range: Extended -20° to 85°C

Cisco QSFP-100G-B20D4-I Price

SKUSKU:BIDI-100G-QSFP28-20A-CI
Lead timeMade to Order - 2 Weeks
Standard recommended retail price ex VAT:
1246.88
Choice of 0+
Telecoms & Integrators Globally

Cisco compatible QSFP-100G-B20D4-I Specifications

Form Factor
QSFP28
Modulation
NRZ (Non-Return to Zero)
Media Type
Single-Mode Fiber (SMF)
Connector
Single LC/UPC
Fiber Count
BiDi
Maximum Distance
20 km
Guaranteed Link Budget
10.2 dB
TX Wavelenght
4-channel O-Band WDM (1273.55/1277.89/1282.26/1286.66 nm)
RX Wavelenght
4-channel LAN WDM (1295.56/1300.05/1304.58/1309.14 nm)
Supported Data Rate
103.125 Gbps
Supportet Ethernet Applications
100G Ethernet (103.125 Gbps)
DDM/DOM
Supported
Forward Error Correction (FEC)
Host FEC Supported
Transmitter Type
EML Laser
Tx Wave Bandwidth
4 LAN WDM Separated Lanes (13.11 nm 1273.55 – 1286.66nm) (L0 Tx center 1273.55nm, L1 Tx center 1277.89nm, L2 Tx center 1282.26nm, L3 Tx center 1286.66nm)
Average Launch Power (Min) Each Lane
-4.3 dBm
Average Launch Power (Max) Each Lane
4.5 dBm
Receiver Type
PIN photodiode
RX Wave Bandwidth
4 LAN WDM Separated Lanes (9.02 nm 1295.56 – 1304.58nm) (L0 Tx center 1295.56nm, L1 Tx center 1300.05nm, L2 Tx center 1304.58nm, L3 Tx center 1309.14nm)
Average Receiver Sensitivity (Min) Each Lane
-14.5 dBm
Average Receiver Sensitivity (Max) Each Lane
4.5 dBm
Receiver Overload
5.5 dBm
Temperature Range
Extended -20° to 85°C
Storage Temperature
-40° to 85°C
Relative Humidity
5 to 85%
Power Consumption (Max)
5 W
Power
+3.3V single power supply
Compliance
CE, RoHS, IEEE 802.3cu, CAUI-4, QSFP28 MSA, SFF-8679

Cisco compatible QSFP-100G-B20D4-I Datasheet

v3

Complete technical specifications and product details

Updated:Jan 16, 2026Format:PDF

Cisco compatible QSFP-100G-B20D4-I Description

Our Compatible Cisco QSFP-100G-B20D4-I QSFP28 transceiver is based on our BIDI-100G-Q28-SL10A product, which has the same parameters and is manufactured in accordance with the same industry standards as its OEM counterpart. Our Cisco compatible transceiver is designed for operation over Single-Mode Fiber (SMF). Our Cisco compatible transceiver hardware building principles are similar as traditional 100G LR4, 100G ER4 modules as it has cooled 4x25Gb/s LAN-WDM NRZ (non return to Zero) modulated, EML lasers, therefore modules can be used in legacy 100G switches and routers and not require PAM4 modulation support or RS (544,514) FEC support to achieve desired distance as it is required by BIDI 100G PAM4 module series. 100G BIDI transceivers are designed for dense applications and provide the ability for operators and service providers to save optical fiber resources.

Our Compatible Cisco QSFP-100G-B20D4-I module has a minimum guaranteed optical budget of 6.1 dB (AVG), 5.1dB (OMA), which in most cases is enough to reach 20km over OS2 single-mode fiber with RS(528,514) FEC enabled on the host device. AVG shows the value calculated from Average receive power (min). Average receive power is only informative and not the actual signal strength indicator. OMA shows the value calculated from Receiver Sensitivity. Receiver Sensitivity parameter shows the actual power. A value below this value does not ensure compliance, but value above this ensures signal stability. Without RS(528,514) FEC enabled reach will be lower. 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. Our Cisco compatible module uses 4 channel 25 Gbps EML (External Modulation Laser) 1273.55nm, 1277.89nm, 1282.26nm, 1286.66nm transmitters and 4 channel 25 Gbps 1295.56nm, 1300.05nm, 1304.58nm, 1309.14nm PIN photodiode receivers. On the transmission side module converts four electrical interface lanes (CAUI-4) 25-Gbps into a four 25-Gbps optical signal (NRZ modulated) and reversely at the receiver side four 25-Gbps optical signals are converted into four 25-Gbps electrical signals. Module supports DDM/DOM optical diagnostics, which provide diagnostic information about the present operating conditions. Our Cisco compatible transceiver operates in the industrial -20°-+85°C temperature range and has a Single LC optical connector and 38 pins edge connector for electrical interface and it supports 103.1 Gbps data rate and such applications as 100G Ethernet.

Our Cisco compatible QSFP-100G-B20D4-I transceivers are fully compliant to QSFP28 MSA (Multi Source Agreement), where IEEE 802.3cu defines physical and management layer specifications CAUI-4 electrical interface, SFF-8679 defines QSFP+ 4X Hardware and Electrical Specification. If you have any questions, please Contact us. We will gladly learn about your needs and recommend the best compatible products from our portfolio.

Note - As great cost effective alternative for Cisco compatible 100G 20km Bidirectional Pluggable Transceivers, which are based on LR4 technology is our PAM4 based products, which we can make Cisco compatible: