Omada 1000BASE-BX Gigabit Single-Mode BiDi SFP Module, LC, TX 1310 nm / RX 1550 nm, 20 km
SKU TPL-SM321B Model SM321B
- Gigabit 1000BASE-BX over one strand of single-mode fiber, up to 20 km
- TX 1310 nm and RX 1550 nm through an LC simplex connector, one fiber strand
- Hot-swappable, with Digital Diagnostic Monitoring for the optical link
- SFP-MSA compliant, fits Gigabit SFP slots, rated 32°F to 158°F (0°C to 70°C)
- Fast shipping from four branches
- 30-day returns on unopened products
Product highlights
- RangeUp to 20 km
- Connectivity1000BASE-BX, TX 1310/RX 1550 nm
- PortsLC simplex, single-mode
The Omada SM321B is a 1000BASE-BX bi-directional SFP module that carries Gigabit over a single strand of single-mode fiber, up to 20 km. It halves the fiber you need for a link, which matters when strands are scarce or expensive to pull.
Built for single-strand fiber links
The module transmits at 1310 nm and receives at 1550 nm through an LC simplex connector, so each direction uses its own wavelength on one strand. BiDi modules work as a pair: pair this module with the SM321A at the far end. It is hot-swappable, reports link health through Digital Diagnostic Monitoring, and follows the SFP Multi-Source Agreement.
Key features
- One fiber strand, up to 20 km on 9/125 µm single-mode
- TX 1310 nm / RX 1550 nm: pair it with the SM321A at the far end
- Hot-swappable: install or replace with the host running
- DDM support for monitoring the optical link
System requirements
A Gigabit SFP slot on a switch or router, single-mode fiber with LC connectors, and the matching SM321A BiDi module at the other end of the link.
Specifications
| SKU | TPL-SM321B |
|---|---|
| Brand | TP-Link |
| Form factor | Gigabit BiDi SFP transceiver module |
| Communication | Ethernet / IP |
| Power input | 3.3V from the host SFP slot |
| Port speed | Gigabit |
| Standard | 1000BASE-BX, IEEE 802.3z |
| Connector type | LC simplex |
| Fiber type | 9/125 µm single-mode |
| Wavelength | TX 1310 nm / RX 1550 nm |
| Max distance | 20 km |
| Data rate | 1.25 Gbps |
| Compatibility notes | SFP-MSA compliant; pairs with SM321A at the far end |
| Hardware features | DDM, hot-swappable |
| Dimensions | 2.2 x 0.5 x 0.5 in (55.4 x 13.7 x 12.9 mm) |
| Operating temp | 32°F to 158°F (0°C to 70°C) |
| Operating humidity | 10 to 90% RH, non-condensing |
| Compliance | FCC, CE |
| Package contents | SM321B, installation guide |
