Allied Telesis AT-SP10BD20-12 – TAA 10G BiDi SFP+ 20km 1270nm TX

Product Overview

The Allied Telesis AT-SP10BD20-12 is a TAA-compliant 10G BiDi SFP+ transceiver delivering single-fiber 10 Gigabit Ethernet connectivity over single-mode fiber up to 20 kilometers. Using 1270nm for transmit and 1330nm for receive, this Allied Telesis 10G BiDi 20km SFP+ 1270nm transceiver enables operators to double the capacity of existing single-mode fiber infrastructure without laying additional cable. The AT-SP10BD20-12 must be paired with the AT-SP10BD20-13 (1330nm TX / 1270nm RX) at the remote end to complete a BiDi link. Network engineers seeking a TAA-compliant single-fiber 10GbE WAN extension or campus interconnect solution will find this module available from Creation Networks at https://creationnetworks.net.

Product Description

The AT-SP10BD20-12 is part of the Allied Telesis SP10 Series of 10 Gigabit SFP+ modules, purpose-built for data center interconnect, enterprise WAN extension, and campus backbone applications requiring long-reach 10GbE over existing single-mode fiber. BiDi (Bidirectional) technology uses a WDM diplexer to transmit and receive on separate wavelengths over a single fiber strand, effectively doubling the data carrying capacity of installed fiber without the cost of new cable runs. The -12 variant transmits at 1270nm and receives at 1330nm; it must be used with the complementary AT-SP10BD20-13 module (1330nm TX / 1270nm RX) to form a complete working link. Operating over OS1/OS2 standard single-mode fiber, the module supports distances up to 20 kilometers, making it suitable for metropolitan area campus interconnects and building-to-building links. Power consumption is below 1 Watt, keeping thermal load minimal in high-density SFP+ deployments. Digital Diagnostics Monitoring (DDM) provides real-time read-back of transmit/receive optical power, temperature, and supply voltage through the host device. The module complies with the SFP+ Electrical MSA SFF-8431 and SFF-8472 MSA standards for broad interoperability. TAA compliance qualifies this module for U.S. government and federal agency procurement. The hot-swappable form factor allows field replacement without system downtime.

Key Features

• TAA Compliant — Approved for U.S. federal, defense, and government network procurement.
• BiDi Single-Fiber Operation — Transmit and receive on one fiber strand using WDM wavelength separation.
• 1270nm TX / 1330nm RX — Wavelength pair for this unit; must be paired with AT-SP10BD20-13 at the remote end.
• 20km Reach — Supports single-mode fiber links up to 20 kilometers for campus and metro interconnects.
• 10 Gbps Data Rate — Full 10GbE throughput for high-bandwidth backbone and WAN extension links.
• Maximum Data Rate 10.3 Gbps — Supports OC-192 and 10GbE line rates with overhead.
• Low Power Consumption (<1W) — Energy-efficient operation for high-density SFP+ chassis.
• Digital Diagnostics Monitoring (DDM) — Real-time optical performance data accessible via host switch.
• SFF-8431 and SFF-8472 MSA Compliant — Broad interoperability with standards-compliant SFP+ equipment.
• Hot-Swappable — Field-replaceable without powering down the host device.
• RoHS Compliant — Meets EU environmental standards for hazardous substances.

Typical Applications

• Campus building-to-building 10GbE interconnects over existing single-mode fiber
• Metropolitan area network (MAN) 10G extension links up to 20km
• Data center to DR site 10GbE replication links
• Fiber capacity expansion without new cable installation
• Enterprise WAN aggregation and distribution layer uplinks
• U.S. government and federal agency 10GbE infrastructure requiring TAA compliance

Technical Specifications

Frequently Asked Questions

Q: What module must be used at the other end of a BiDi link with the AT-SP10BD20-12?

The AT-SP10BD20-12 (1270nm TX / 1330nm RX) must be paired with the AT-SP10BD20-13 (1330nm TX / 1270nm RX) at the remote end. Both modules operate on a single fiber strand using complementary wavelengths to achieve bidirectional 10GbE transmission.

Q: Why use a BiDi transceiver instead of a standard dual-fiber SFP+?

BiDi transceivers use a single fiber for both transmit and receive by operating on two different wavelengths. This doubles the effective capacity of existing single-mode fiber infrastructure without the cost and disruption of installing new cable runs.

Q: What fiber type is required for the AT-SP10BD20-12?

The module requires standard OS1 or OS2 single-mode fiber and supports links up to 20 kilometers. It is not compatible with multimode fiber.

Q: Is the AT-SP10BD20-12 TAA compliant for U.S. government procurement?

Yes. This transceiver carries full TAA compliance, making it eligible for U.S. federal, defense, and government network projects that require Trade Agreements Act-compliant equipment.

Q: Does the AT-SP10BD20-12 support Digital Diagnostics Monitoring?

Yes. DDM (SFF-8472 compliant) allows the host switch to read transmit and receive optical power, temperature, supply voltage, and laser bias current in real time for proactive link monitoring.

Q: What is the power consumption of this transceiver?

Power consumption is less than 1 Watt, making it one of the most energy-efficient options for 10G single-mode long-reach links in high-density deployments.

Q: Where can I purchase the AT-SP10BD20-12 and its paired module AT-SP10BD20-13?

Both the AT-SP10BD20-12 and AT-SP10BD20-13 are available from Creation Networks at https://creationnetworks.net. Purchasing both from the same source ensures wavelength-matched pairing and simplifies procurement.