25G BiDi SFP28 40km Industrial Transceiver (Side A): BIDI-25G-SFP28-40AI
25G BiDi SFP28 Industrial 40km Side A, Specs and Pairing
BIDI-25G-SFP28-40AI is EdgeOptic's industrial-temperature 25G SFP28 BiDi transceiver for the upstream side of a 40 km single-fiber link in harsh environments. It transmits at 1270 nm, receives at 1310 nm over G.652 single-mode fiber on a single LC/UPC connector with a 19 dB optical path loss budget. The −45°C to +85°C operating range covers outdoor cabinets, cell-site enclosures, and other extended-temperature deployments for 5G fronthaul, mobile backhaul, and metro Ethernet. The matched far-end partner is BIDI-25G-SFP28-40BI.
- Media Type: Single-Mode Fiber (SMF)
- Fiber Count: BiDi
- Connector: Single LC/UPC
- Maximum Distance: 40 km
- Average Link Budget: 19 dB
- Tx Wavelength: 1270 nm
- Supported Data Rate: 8.5 Gbps - 25.78 Gbps
- DDM/DOM: Supported
- Forward Error Correction (FEC): Host FEC Supported
- Temperature Range: Industrial -45°C - +85°C
25G BiDi 40km Industrial Pricing
SKU:BIDI-25G-SFP28-40AI
Made to Order - 2 Weeks25G BiDi SFP28 40km Industrial Transceiver (Side A) Specification
Form Factor | SFP28 |
Media Type | Single-Mode Fiber (SMF) |
Fiber Count | BiDi |
Connector | Single LC/UPC |
Maximum Distance | 40 km |
Average Link Budget | 19 dB |
TX Wavelength | 1270 nm |
RX Wavelength | 1310 nm |
Supported Data Rate | 8.5 Gbps - 25.78 Gbps |
Supported Ethernet Applications | 10G Ethernet (10.31Gbps), 25G Ethernet (25.78Gbps) |
DDM/DOM | Supported |
Forward Error Correction (FEC) | Host FEC Supported |
Transmitter Type | DML Laser |
Average Launch Power (Min) Each Lane | 0 dBm |
Average Launch Power (Max) Each Lane | 6 dBm |
Extinction Ratio (Min) | 3.5 dB |
Receiver Type | PIN photodiode |
Rx Wavelength Bandwidth | 20 nm |
Average Receiver Sensitivity (Min) Each Lane | -19 dBm |
Average Receiver Sensitivity (Max) Each Lane | -5 dBm |
Receiver Overload | -5 dBm |
Temperature Range | Industrial -45°C - +85°C |
Storage Temperature | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power Consumption (Max) | 1.5 W |
Power | +3.3V single power supply |
Compliance | CE, Class 1 FDA and IEC60825-1 Laser Safety Compliant, CPRI Option 10/eCPRI, RoHS, SFF-8431, SFF-8432, SFF-8472, SFP28 MSA |
25G BiDi SFP28 40km Industrial Transceiver (Side A) Datasheet
v4Complete technical specifications and product details
25G BiDi SFP28 40km Industrial Transceiver (Side A) Description
EdgeOptic's BIDI-25G-SFP28-40AI is a multi-vendor-compatible industrial 25G BiDi SFP28 transceiver rated for −45°C to +85°C operation. It carries the upstream wavelength assignment for the industrial pair: 1270 nm TX, 1310 nm RX, single LC/UPC connector, 19 dB link budget over G.652 single-mode fiber. The far-end partner is BIDI-25G-SFP28-40BI, which transmits at 1310 nm and receives at 1270 nm to complete the 40 km link on one fiber strand.
The optical front end uses a DML laser transmitter rated 0 to +6 dBm output power, with extinction ratio 3.5 dB minimum, and a PIN photodiode receiver with minimum sensitivity of −19 dBm (with host-side RS-FEC active) and overload of −5 dBm. Receive wavelength bandwidth is 20 nm. Maximum power consumption is 1.5 W on a +3.3 V supply. SFF-8472 digital diagnostics expose live readouts for TX power, RX power, temperature, supply voltage, and laser bias for monitoring of outdoor and remote deployments.
Dual-rate operation covers 10G Ethernet (10.3125 Gbps) and 25G Ethernet (25.78125 Gbps). CPRI Option 10 and eCPRI are supported for 5G fronthaul aggregation, which is a common industrial-temperature deployment at remote radio sites. Host-side RS-FEC is strongly recommended for 25G long-reach operation; the module supports host FEC and port FEC mode depends on the switch platform and OS configuration. Relative humidity range is 5 to 85 percent. The −45°C lower limit extends below the −40°C minimum defined as the standard industrial operating range in SFF-8431.
Typical industrial-temperature deployments include outdoor 5G xHaul cabinets at unconditioned cell sites, smart-grid substation backbones and distribution feeder communications, railway trackside fiber for signaling and operational data, pipeline SCADA over long-distance fiber, and remote-site backhaul in regions where ambient temperature falls outside the standard 0 to +70 °C commercial range. The single-strand BiDi architecture halves fiber count for the same reach, which matters most where buried conduit, pole infrastructure, or pipeline right-of-way limits new pulls. CPRI Option 10 and eCPRI support carries 5G-NR fronthaul directly on the 25G optic at compact remote radio sites where rack space and power are constrained. The −45 °C to +85 °C operating window covers Nordic-climate cell sites and other outdoor enclosures without active heating, where module reliability across the full temperature span drives mean-time-to-repair more than peak performance does.
Compliance covers SFP28 MSA, SFF-8431, SFF-8432, SFF-8472, CE, RoHS, and Class 1 FDA + IEC 60825-1 laser safety. Multi-vendor coding is available so the module can be ordered to match the target switch or router platform. Industrial and commercial variants must not be cross-paired: this module's matched partner is BIDI-25G-SFP28-40BI, not the commercial BIDI-25G-SFP28-40B. Cross-pairing breaks the temperature rating of the link and, in the 40AI / 40A case specifically, would put two same-direction 1270 nm transmitters on the link.
Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms. Made to order, 2-week lead time, lifetime warranty included. For platform-specific compatibility coding, extended-temperature deployment guidance, or volume pricing, contact our sales team.
Frequently Asked Questions
What is the temperature operating range of BIDI-25G-SFP28-40AI, and how does it differ from typical industrial 25G BiDi modules?
BIDI-25G-SFP28-40AI is rated for −45°C to +85°C operation. The lower bound of −45°C extends 5°C below the −40°C minimum defined as the standard industrial operating range in SFF-8431. The extra cold-end margin matters for outdoor cabinets in Nordic and subarctic climates, telco cell-site enclosures without active heating, and other deployments where ambient air temperature can fall below −40°C during winter. Relative humidity range is 5 to 85 percent and the module remains within its 19 dB link budget and −19 dBm RX sensitivity across the full temperature range.
Why does BIDI-25G-SFP28-40AI use a PIN photodiode receiver, and does that affect link planning at 40 km?
BIDI-25G-SFP28-40AI uses a PIN photodiode receiver. The matched far-end partner BIDI-25G-SFP28-40BI uses an APD receiver. Both ends of the industrial pair are specified at −19 dBm minimum RX sensitivity and share the same 19 dB link budget and 40 km reach. For span engineering, the relevant numbers are the documented TX power (0 to +6 dBm), RX sensitivity (−19 dBm), and overload (−5 dBm); detector type does not by itself determine which side goes where. Wavelength assignment is what fixes side A versus side B: this module transmits at 1270 nm and must be paired with a 1310 nm TX module on the far end.
Can BIDI-25G-SFP28-40AI be paired with the commercial BIDI-25G-SFP28-40A for mixed-environment links?
No. BIDI-25G-SFP28-40AI and BIDI-25G-SFP28-40A share the same wavelength assignment (1270 nm TX, 1310 nm RX), so they are the same side of the link. Pairing them would put two 1270 nm transmitters on the fiber and no working link would come up. The correct partner for 40AI is BIDI-25G-SFP28-40BI on the opposite end. If one end of a span requires industrial temperature and the other does not, the conservative choice is to use the industrial pair (40AI + 40BI) at both ends; mixing temperature grades by selecting 40AI + 40B is also blocked because they share the same TX wavelength.