AFCT-91FRDDZ Avago Compatible 400GBASE-FR4 QSFP-DD Transceiver
Avago compatible AFCT-91FRDDZ - Key Features
- Compatibility: Avago
- Media Type: Single-Mode Fiber (SMF)
- Connector: Double LC/UPC
- Fiber Count: Duplex
- Maximum Distance: 2 km
- Guaranteed Link Budget: 4 dB
- Tx Wavelength: CWDM 4 Ch
- Supported Data Rate: 425 Gbps
- DDM/DOM: Supported
- Forward Error Correction (FEC): Host FEC Supported
- Temperature Range: Standard 0°-70°C
Avago AFCT-91FRDDZ Price
SKU:400G-QSFP-DD-2.1-AG
Made to Order - 2 WeeksAvago compatible AFCT-91FRDDZ Specifications
Form Factor | QSFP-DD |
Modulation | PAM4 (Pulse Amplitude Modulation 4-level) |
Media Type | Single-Mode Fiber (SMF) |
Connector | Double LC/UPC |
Fiber Count | Duplex |
Maximum Distance | 2 km |
Guaranteed Link Budget | 4 dB |
TX Wavelength | 4-channel CWDM (1271/1291/1311/1331 nm) |
RX Wavelength | 4-channel CWDM (1271/1291/1311/1331 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 | EML Laser |
Tx Wave Bandwidth | 73 nm (1264.50–1337.50 nm) |
Average Launch Power (Min) Each Lane | -3.3 dBm |
Average Launch Power (Max) Each Lane | 3.5 dBm |
Extinction Ratio (Min) | 3.5 dB |
Receiver Type | PIN photodiode |
RX Wave Bandwidth | 73 nm (1264.50–1337.50 nm) |
Average Receiver Sensitivity (Min) Each Lane | -7.3 dBm |
Average Receiver Sensitivity (Max) Each Lane | 3.5 dBm |
Receiver Overload | 4.5 dBm |
Temperature Range | Standard 0°-70°C |
Storage Temperature | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power Consumption (Max) | 10 W |
Power | +3.3V single power supply |
Compliance | CE, RoHS, Class 1 FDA and IEC60825-1 Laser Safety Compliant, 100G Lambda MSA, 400GBASE-FR4, IEEE 802.3cu, QSFP-DD MSA |
Avago compatible AFCT-91FRDDZ Datasheet
v2Complete technical specifications and product details
Avago compatible AFCT-91FRDDZ Description
AFCT-91FRDDZ is Avago's 400GBASE-FR4 QSFP-DD -- now under Broadcom Inc. after the 2016 acquisition. The AFCT- prefix originates from Avago's fiber optic product line and remains the primary search term among engineers. EdgeOptic's compatible matches the original module's specifications.
Four CWDM wavelengths (1271/1291/1311/1331 nm), EML transmitters, PIN receivers. PAM4 modulation, 106.25 Gbps per lane, 400G aggregate throughput. LC duplex connector over OS2 single-mode fiber, 2 km maximum reach. Budget: 4.0 dB (TX -3.3 to +3.5 dBm, RX -7.3 dBm). DOM supported for real-time optical monitoring. KP4 FEC (RS(544,514)) required on the host. Under 11W power consumption. The module uses 400GAUI-8 electrical signaling toward the host ASIC. 0 to 70 C commercial operating temperature. Full spec table on the 400GBASE-FR4 product page.
Avago acquired Broadcom Corporation in 2016, then renamed the combined company Broadcom Inc. The AFCT-91FRDDZ was originally an Avago SKU -- it appears under both brand names in documentation and distributor listings. Broadcom's datasheet is still marked preliminary (Rev 0.8, September 2019), which indicates the product's lifecycle status. OEM availability through Broadcom distribution can be limited and pricing tends to reflect the constrained supply.
Important clarification: some third-party listings incorrectly claim the AFCT-91FRDDZ uses MTP/MPO connectors. This is wrong -- it's FR4, LC duplex. FR4 multiplexes four CWDM wavelengths on a single fiber pair through the LC connector. DR4 uses MPO for parallel lanes on separate fibers. Different module, different connector, different fiber infrastructure.
The original AFCT-91FRDDZ was an OEM component used across multiple switch and router platforms. EdgeOptic codes the compatible for Cisco, Arista, Juniper, HPE, and others. On Cisco, EdgeOptic programs Cisco-recognized EEPROM -- Nexus and Catalyst accept it without CLI workarounds. Specify the target switch vendor when ordering and EdgeOptic pre-programs the EEPROM before shipping.
IEEE 802.3cu-2021, 100G Lambda MSA 400G-FR4, QSFP-DD MSA, CMIS 4.0 compliant. DOM provides per-lane TX/RX optical power, module temperature, laser bias current, and supply voltage through the I2C management interface. Electrical side: 400GAUI-8 with CEI-56G-VSR-PAM4 signaling between module DSP and host ASIC. RoHS compliant, Class 1 Laser Product. 0 to 70 C commercial operating temperature.
Volume pricing or platform coding -- contact our sales team.
Frequently Asked Questions
Is the Avago AFCT-91FRDDZ still in production under Broadcom?
The datasheet is still preliminary (Rev 0.8, 2019), and current production status at Broadcom is unclear. EdgeOptic's compatible is in stock and ships immediately.
Does the AFCT-91FRDDZ use LC duplex or MPO connectors?
LC duplex. It's FR4 -- wavelength multiplexing over a single fiber pair. Some third-party listings incorrectly mention MPO, which is for DR4 modules.