MSA Compatible 100G BIDI ER1 QSFP28 PAM4 Side A Transceiver: BIDI-100G-Q28-SL42A

# Key Highlights
  • Type: BIDI 100G ER1 QSFP28
  • Compatibility: Multi-Vendor MSA Compatible
  • Tx/Rx Wavelength: 1304.58nm / 1309.14nm
  • Laser: EML Laser
  • Modulation: PAM4
  • Fiber Type: Single-Mode Fiber (SMF)
  • Connectors: Simplex LC
  • Optical Budget: 14.7 dB
  • Max. Distance: 40 km
  • Data Rate: 106.25 Gbps
  • FEC Forward Error Correction: Supported
  • DDM/DOM: Supported
  • Power Consumption: ≤4.5 W
  • Temperature: Standard 0°-70°C
# Pricing & Ordering
SKU: BIDI-100G-Q28-SL42A


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:

Single-Mode Fiber (SMF)


Single LC

TX Wavelength:

1304.58 nm

RX Wavelength:

1309.14 nm

Minimum Optical Budget:

14.7 dB

Maximum Distance:


Supported Data Rate:

106.25 Gbps

Supported Applications:

100G Ethernet (106.25 Gbps)


PAM4 (Pulse Amplitude Modulation 4-level)



Forward Error Correction (FEC):

Integrated in DSP

Transmitter Type:


Tx Wavelength Bandwidth:

1.04 nm

Average Launch Power (Min) Each Lane:

0 dBm

Average Launch Power (Max) Each Lane:

5.6 dBm

Extinction Ratio (Min):

5 dB

Receiver Type:


Rx Wavelength Bandwidth:

1.04 nm

Average Receiver Sensitivity (Min) Each Lane:

-14.7 dBm

Average Receiver Sensitivity (Max) Each Lane:

-3.4 dBm

Receiver Overload:

-2.4 dBm

Temperature Range:

Standard 0°-70°C

Storage Temperature:

-40° to 85°C

Relative Humidity:

5 to 85%

Power Consumption:





100G Lambda MSA, CAUI-4, IEEE 802.3cu, RoHS-6, SFF-8636 Rev 2.10a, SFF-8679, CE

# Product Documentation
# Product Description

BIDI-100G-Q28-SL42A is a A side 100G BIDI ER1 Multi-Vendor MSA Compatible Bidirectional QSFP28 (Quad Small Form-Factor Pluggable 28) Transceiver designed for operation over Single-Mode Fiber (SMF). BIDI 100G ER1 QSFP28 has a built in BIDI 100G PAM4 (Pulse Amplitude Modulation 4-level) DSP (Digital Signal Processor) based gearbox used to convert four electrical interface lanes 4x25Gbps (CAUI-4) NRZ to one 50Gbaud (100Gbps) PAM4 signal lane. FEC (Forward Error Correction) block is also integrated in the DSP unit. This transceiver is designed for latest generation switches and routers which have PAM4 modulation support and RS (544,514) FEC technology support. In case you have an older generation switch/router with NRZ support for BIDI 100G LR4 scenario please refer to the BIDI-100G-QSFP28-20A and BIDI-100G-QSFP28-20B products. 100G BIDI transceivers are designed for dense applications and provide the ability for operators and service providers to save optical fiber resources. Please note to establish A to B connection this A side BIDI-100G-Q28-SL42A module must work in pair with B side BIDI 100G ER1 module BIDI-100G-Q28-SL42B.

100G BIDI ER1 PAM4 A side module has a minimum guaranteed optical budget of 14.7 dB, which in most cases is enough to reach 40km over single-mode fiber with RS((544,514) FEC enabled on the host device. Without RS((544,514) 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. 100G BIDI ER1 uses 1 channel 106.25 Gbps EML (External Modulation Laser) 1304.58 nm transmitters and 1 channel 106.25 Gbps PIN 1309.14 nm photodiode receivers. Module supports DDM/DOM optical diagnostics, which provide diagnostic information about the present operating conditions. 100G BIDI ER1 QSFP28 operates in the standard 0°-70°C temperature range and has a Single LC optical connector and 38 pins edge connector for electrical interface. 100G BIDI ER1 QSFP28 Side A module supports 106.25 Gbps data rate and such applications as 100G Ethernet.

100G BIDI ER1 QSFP28 Side A transceivers are widely used in Cisco, HP, Juniper, Huawei and other industry well known manufacturers equipment. Transceivers are CE/RoHS certified and are compliant with product safety standards. BIDI-100G-Q28-SL42A transceiver is fully compliant to QSFP28 Multi Source Agreement (MSA), 100G Lambda MSA, where IEEE 802.3cu defines physical layer specifications CAUI-4 electrical interface, SFF-8679 defines QSFP+ 4X Hardware and Electrical Specification but SFF-8636 Rev 2.10a defines Management Interface for 4-lane Modules. 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 – we have accumulated expertise in custom-encoded firmware for BIDI-100G-Q28-SL42A in order to make these modules work in almost any brand of equipment. We will be glad to know your requirements – Contact Us.