Allied Telesis AT-SPBD40-13/I SFP/LC 1G BIDI 40KM 1310TX/ 1490RXDUSTRIAL TEMP -40 TO 85C

Product Overview

The Allied Telesis AT-SPBD40-13/I is a 1G BiDi SFP transceiver for single-mode fiber, transmitting at 1330nm and receiving at 1270nm over distances up to 40km. This Allied Telesis 1G BiDi SFP 40km industrial 1330nm TX module operates over a single strand of OS2 fiber, making it ideal for long-haul links where running a second fiber is cost-prohibitive. Rated for industrial temperatures from -40°C to +85°C, the AT-SPBD40-13/I is purpose-built for outdoor enclosures, utility substations, and harsh-environment deployments. Important: this transceiver must be paired with an AT-SPBD40-14/I (1490nm TX / 1310nm RX) at the far end — mismatched wavelengths will result in no link.

Product Description

BiDi (bidirectional) SFP transceivers transmit and receive on a single fiber strand by using two different wavelengths simultaneously. The AT-SPBD40-13/I transmits at 1330nm and receives at 1270nm, leveraging wavelength-division multiplexing (WDM) to carry a full-duplex Gigabit Ethernet signal over one OS2 single-mode fiber rather than the two strands required by conventional SFPs. This cuts fiber infrastructure costs in half for long-haul and metropolitan links. Reach is rated at 40km over OS2 9µm single-mode fiber, making the module suitable for campus backbone extensions, inter-building links, and utility network deployments where distances regularly exceed what multi-mode optics can support. The industrial temperature rating of -40°C to +85°C differentiates this module from standard commercial-grade SFPs (0°C to 70°C), allowing reliable operation in outdoor cabinets, cell tower base stations, transportation infrastructure, and industrial control environments across all seasons. The transceiver conforms to the MSA (Multi-Source Agreement) SFP standard, is hot-swappable, and plugs into any SFP-compliant port. It interfaces via an LC connector — a single LC duplex connector is used, with one fiber strand carrying TX and the other RX within the same LC plug. Always deploy the AT-SPBD40-13/I with an AT-SPBD40-14/I at the opposite link end. This paired BiDi 1G SFP 40km industrial transceiver solution is available from Creation Networks.

Key Features

• Single-Fiber BiDi Architecture — Transmits at 1330nm, receives at 1270nm on one OS2 strand, halving fiber infrastructure costs.
• 40km Reach — Supports long-haul and metropolitan Gigabit links on OS2 9µm single-mode fiber.
• Industrial Temperature: -40°C to +85°C — Operates reliably in outdoor enclosures, utility cabinets, and harsh manufacturing environments.
• 1000Base-X Gigabit Ethernet — Delivers 1Gbps full-duplex throughput for backbone and uplink applications.
• Hot-Swappable SFP Form Factor — MSA-compliant; installs in any SFP-compatible switch, router, or media converter port.
• LC Connector — Standard LC interface; uses one fiber strand per link when paired correctly with a BiDi companion.
• MSA Compliant — Interoperates with SFP-compliant equipment from Allied Telesis and other vendors.

Typical Applications

• Long-haul campus and metro Gigabit backbone links up to 40km
• Inter-building connectivity where only one fiber strand is available
• Outdoor and industrial installations: utility substations, transportation hubs, oil and gas facilities
• Cellular tower backhaul and base station links in temperature-extreme environments
• Fiber exhaust mitigation — doubling capacity of existing single-strand fiber runs without new cable
• Industrial automation and SCADA networks requiring extended temperature operation

Technical Specifications

Frequently Asked Questions

Q: What module must I pair with the AT-SPBD40-13/I at the far end?

You must use the AT-SPBD40-14/I (1490nm TX / 1310nm RX) at the opposite end of the fiber link. The -13/I transmits at 1330nm and receives at 1270nm; the -14/I is the complementary module with matching wavelengths. Using two -13/I modules on the same link will result in no connection.

Q: What happens if I accidentally pair two AT-SPBD40-13/I modules together?

No link will be established. Both units would be transmitting at 1330nm and both expecting to receive at 1270nm. BiDi transceivers require wavelength complementarity — TX of one must equal the RX of the other.

Q: Why choose a BiDi SFP over a standard dual-fiber SFP?

BiDi SFPs use a single fiber strand instead of two, effectively doubling the usable capacity of an existing single-strand fiber run or cutting your fiber infrastructure cost in half on new deployments. The trade-off is that BiDi pairs must be matched correctly.

Q: What is the difference between the AT-SPBD40-13/I and a standard (commercial temp) SPBD40-13?

The "/I" suffix denotes the industrial temperature grade: -40°C to +85°C, versus the commercial grade of 0°C to 70°C. Use the /I variant any time the transceiver may be exposed to cold winters, hot outdoor enclosures, or industrial HVAC-free environments.

Q: Is the AT-SPBD40-13/I compatible with non-Allied Telesis switches?

Yes. The module is MSA-compliant and will work in any SFP-compatible port. Some switch vendors enable vendor lock-out by default; check your switch's compatibility settings or approved transceiver list before purchasing.

Q: Can I use this module at distances shorter than 40km?

Yes. The 40km rating is the maximum reach. The module operates at any shorter distance on OS2 single-mode fiber, subject to the minimum receive power specification in the datasheet.

Q: Where can I purchase the AT-SPBD40-13/I and its companion AT-SPBD40-14/I?

Both modules are available at creationnetworks.net. Contact Creation Networks for bundle pricing when ordering paired BiDi transceivers.