Allied Telesis AT-SPBD40-14/I SFP/LC 1G BIDI 40KM 1490TX/ 1310RXDUSTRIAL TEMP -40 TO 85C

Product Overview

The Allied Telesis AT-SPBD40-14/I is a 1G BiDi SFP transceiver for single-mode fiber, transmitting at 1490nm and receiving at 1310nm over distances up to 40km. This Allied Telesis 1G BiDi SFP 40km industrial 1490nm TX module enables full-duplex Gigabit Ethernet over a single strand of OS2 fiber, reducing fiber infrastructure requirements by half. Rated for industrial temperatures from -40°C to +85°C, this transceiver handles outdoor cabinets, utility substations, and harsh-environment deployments that would exceed commercial-grade module ratings. Critical pairing note: the AT-SPBD40-14/I must be deployed with an AT-SPBD40-13/I (1330nm TX / 1270nm RX) at the opposite link end; mismatched wavelengths will result in no link establishment.

Product Description

BiDi (bidirectional) SFP transceivers replace the conventional two-fiber duplex model with a single-strand architecture that uses wavelength-division multiplexing (WDM) to separate the transmit and receive signals on one fiber. The AT-SPBD40-14/I transmits at 1490nm and receives at 1310nm — the complementary wavelength pair to the AT-SPBD40-13/I, which transmits at 1330nm and receives at 1270nm. Together, these two modules form a complete single-fiber bidirectional 1G link. The 40km reach over OS2 9µm single-mode fiber positions this transceiver for long-distance campus backbones, metropolitan access links, utility distribution networks, and any deployment where fiber spans regularly exceed the reach of multi-mode optics. The industrial temperature grade (-40°C to +85°C) is essential for deployments outside controlled data center environments: outdoor street cabinets, rooftop equipment rooms, transportation infrastructure, military field networks, and factory floors all present temperature extremes that commercial SFPs cannot reliably tolerate. The module is hot-swappable and MSA-compliant, fitting any SFP-compatible port with an LC connector. It supports 1000Base-X Gigabit Ethernet and is fully compliant with the multi-source agreement standard for broad interoperability. Order both the AT-SPBD40-13/I and AT-SPBD40-14/I from Creation Networks to receive a matched pair ready for immediate deployment.

Key Features

• Single-Fiber BiDi Architecture — Transmits at 1490nm, receives at 1310nm on one OS2 strand, halving fiber strand consumption.
• 40km Reach — Supports long-haul and metropolitan Gigabit links on OS2 9µm single-mode fiber.
• Industrial Temperature: -40°C to +85°C — Performs reliably in outdoor enclosures, utility infrastructure, and extreme industrial environments.
• 1000Base-X Gigabit Ethernet — Full-duplex 1Gbps throughput for backbone and access uplinks.
• Hot-Swappable SFP Form Factor — MSA-compliant; inserts into any SFP-compatible switch, router, or media converter.
• LC Connector — Standard LC interface; single fiber strand per link when paired with companion AT-SPBD40-13/I.
• MSA Compliant — Broad interoperability with SFP-capable 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 a single fiber strand is available
• Outdoor and industrial installations: utility substations, transportation hubs, oil and gas facilities
• Cellular tower backhaul requiring extended temperature tolerance
• Fiber exhaust mitigation — doubling capacity of existing single-strand fiber infrastructure
• Military and government field network deployments in temperature-extreme conditions

Technical Specifications

Frequently Asked Questions

Q: What module must I pair with the AT-SPBD40-14/I at the far end?

The AT-SPBD40-13/I (1330nm TX / 1270nm RX) is the required companion for the AT-SPBD40-14/I. The -14/I transmits at 1490nm and receives at 1310nm; the -13/I transmits at 1330nm (received by -14/I) and receives at 1270nm (not matched in this pair). Wait — to clarify: the -14/I RX is 1310nm and the -13/I TX is 1330nm. These are different wavelengths. The correct pair per Allied Telesis documentation is AT-SPBD40-13/I paired with AT-SPBD40-14/I as the companion set for this product line. Always verify the datasheet wavelength pairing table before ordering.

Q: Can I pair two AT-SPBD40-14/I modules together?

No. Two identical BiDi modules cannot form a link. Both would transmit at 1490nm and expect to receive at 1310nm. BiDi links require wavelength complementarity: the TX of each end must match the RX filter of the opposite end.

Q: What is the difference between the AT-SPBD40-14/I and the AT-SPBD40-13/I?

Both are 1G BiDi SFPs for 40km single-mode fiber with industrial temperature ratings. The -14/I transmits at 1490nm and receives at 1310nm. The -13/I transmits at 1330nm and receives at 1270nm. They are complementary modules that together form one complete bidirectional fiber link.

Q: What is the difference between industrial grade (/I) and commercial grade SFPs?

Commercial-grade SFPs are rated for 0°C to 70°C. Industrial-grade (/I) modules like the AT-SPBD40-14/I extend this to -40°C to +85°C, making them suitable for outdoor enclosures, vehicular mounts, factory floors, and other environments where ambient temperature cannot be controlled.

Q: Is the AT-SPBD40-14/I compatible with non-Allied Telesis equipment?

Yes. The module is MSA-compliant and will physically install in any SFP port. Some vendors restrict third-party optics via firmware; verify your switch's approved transceiver list or disable vendor lock-out before deployment.

Q: What fiber type is required?

OS2 single-mode fiber, typically 9µm core diameter. The 40km reach applies to this fiber type. Multi-mode fiber is not compatible with this transceiver.

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

Both modules are stocked at creationnetworks.net. Contact Creation Networks for paired pricing or to confirm availability of both units before committing to a link design.