AT-QSFP28-SR4 Allied Telesis Compatible 100GBASE-SR4 QSFP28 Transceiver
Allied Telesis compatible AT-QSFP28-SR4 - Key Features
- Compatibility: Allied Telesis
- Media Type: 4 Lanes of Multi-Mode Fiber (MMF)
- Connector: MTP/MPO-12 (UPC)
- Fiber Count: 8 Fibers
- Maximum Distance: 100 m
- Average Link Budget: 1.9 dB
- Tx Wavelength: 850 nm
- Supported Data Rate: 103.125 Gbps
- DDM/DOM: Supported
- Forward Error Correction (FEC): No
- Temperature Range: Standard 0°-70°C
Allied Telesis AT-QSFP28-SR4 Price
In Stock - Ships Next Business DayAllied Telesis compatible AT-QSFP28-SR4 Specifications
Form Factor | QSFP28 |
Modulation | NRZ (Non-Return to Zero) |
Media Type | 4 Lanes of Multi-Mode Fiber (MMF) |
Connector | MTP/MPO-12 (UPC) |
Fiber Count | 8 Fibers |
Maximum Distance | 100 m |
Average Link Budget | 1.9 dB |
TX Wavelength | 850 nm |
RX Wavelength | 4-channel 850 nm |
Supported Data Rate | 103.125 Gbps |
Supported Ethernet Applications | 100G Ethernet (103.125 Gbps) |
DDM/DOM | Supported |
Forward Error Correction (FEC) | No |
Transmitter Type | VSCEL Laser |
Tx Wave Bandwidth | 20 nm (840-860 nm) |
Average Launch Power (Min) Each Lane | 3 dBm |
Average Launch Power (Max) Each Lane | 7.5 dBm |
Extinction Ratio (Min) | 3 dB |
Receiver Type | PIN photodiode |
RX Wave Bandwidth | 20 nm (840-860 nm) |
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 | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power Consumption (Max) | 3.5 W |
Power | +3.3V single power supply |
Compliance | CE, RoHS, Class 1 FDA and IEC60825-1 Laser Safety Compliant, IEEE 802.3bm, 100GBASE-SR4, QSFP28 MSA, SFF-8636 (Management Interface for 4-lane modules), SFF-8665 |
Allied Telesis compatible AT-QSFP28-SR4 Datasheet
v3Complete technical specifications and product details
Allied Telesis compatible AT-QSFP28-SR4 Description
EdgeOptic's AT-QSFP28-SR4 compatible is an Allied Telesis-coded 100GBASE-SR4 version of the EdgeOptic 100G-QSFP28-100 multi-vendor short-reach transceiver, one universal QSFP28 module coded for multiple switch and router vendors. It carries 100G Ethernet over four parallel 850 nm VCSEL lanes at 25.78 Gbps each across multimode fiber, terminated on an MTP/MPO-12 connector using 8 active fibers, 4 transmit and 4 receive. Reach is 70 m over OM3 and 100 m over OM4, per IEEE 802.3bm Clause 95. The transceiver port is female with no pins; the patch cable is the pinned male side, so a transceiver-to-transceiver link needs a male-to-male Type B MTP/MPO-12 cable.
Optical specifications include a 1.9 dB average link budget, receiver sensitivity of −10.3 dBm per lane, NRZ modulation, and no FEC required at this reach. The transmitter uses 850 nm VCSEL lasers; the receiver is a PIN photodiode. OM4 supports the full 100 m while OM3 is rated to 70 m, with achievable distance set by patch panels, splices, and connector cleanliness across the installed link. DDM/DOM reports transmit power, receive power and bias current per lane, plus module-level temperature and supply voltage, all per SFF-8636. The module runs across the 0 to 70 degrees C commercial range at 3.5 W maximum and is compliant with the QSFP28 MSA and SFF-8665. This is a 100G Ethernet short-reach optic; it does not carry Fibre Channel, OTN, or SONET traffic.
EdgeOptic codes this compatible with Allied Telesis-recognized EEPROM so the host reads it as a supported optic. It works on Allied Telesis x950 Series switches that have 100G QSFP28 ports; confirm the specific model and firmware against the Allied Telesis compatibility matrix before deployment. Typical roles include data center core interconnects, campus core uplinks, and ISP aggregation.
Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms. Ships next business day from EU stock with a lifetime warranty. For project pricing or technical consultation, contact our sales team.