Cisco SFP-10G-ER40 Compatible 10GBASE-ER SFP+ transceiver operates at 1310 nm and supports link distances up to 40 km over single-mode fiber (SMF). It is designed for high-speed 10G Ethernet and Fiber Channel applications, with a simplex LC/UPC connector included. The SFP+ form factor allows for “hot-pluggable” features, making installations or upgrades easy and seamless for already established optical equipment in the network.
This SFP transceiver complies with IEEE 802.3ae, SFP+ MSA, SFF-8431, SFF-8432, and SFF-8472 standards to ensure compatibility and interoperability with a wide variety of equipment in the market. This module also provides Digital Optical Monitoring (DOM) via the 2-wire serial interface, enabling real-time observation of temperature, voltage, and optical power. The SFP has a low power consumption of less than 1.5 W and provides reliable, stable operation across a wide operating temperature range, suitable for both data center and carrier environments.
It has been coded and tested to guarantee compatibility and performance across many vendors’ network switches, routers, servers, and network interface cards (NICs). Some of these vendors include: Cisco SFP-10G-ER40, Generic SFP-10G-ER1310, Ubiquiti UF-SMER1310-10G, Intel E10GSFPER1310, Dell 330-2404-40, Juniper EX-SFP-10GE-ER40, HW SFP-10G-ER1310, Allied Telesis AT-SP10ER1310, Arista SFP-10G-ER40, D-Link DEM-432XT-ER1310-DD, Extreme 10GB-ER1310-SFPP, Brocade 10G-SFPP-ER40, Mellanox MFM1T02A-ER1310, Fortinet FN-TRAN-SFP+ER1310, Netgear SFP-10G-ER1310, Palo Alto PAN-SFP-PLUS-ER1310, F5 F5-UPG-SFP+ER1310-R, TP-Link TXM431-ER1310, and MikroTik S+31DLC40D.
Specifications
| Parameter | Specification |
| Brand | BYXGD |
| Form Factor | SFP+ |
| Data Rate | 10.3125 Gbps |
| Wavelength | 1310 nm |
| Distance | Up to 40km |
| Connector Type | Simplex LC/UPC |
| Optical Components | DFB 1310nm Laser, PIN Receiver |
| Fiber Type | SMF |
| Core Size | 9/125 µm |
| Modulation | NRZ |
| TX | -2 to +5 dBm |
| RX | < -15 dBm |
| Receiver Overload | > 0.5 dBm |
| Extinction Ratio | > 4.5 dB |
| DOM/DDM | Supported (per SFF-8472) |
| Power Consumption | < 1.5 W |
| Operating Temperature | 0°C to 70°C (32°F to 158°F) |
| Storage Temperature | -40°C to 85°C (-40°F to 185°F) |
| Compliance | SFP+ MSA, IEEE 802.3ae, SFF-8431, SFF-8432, SFF-8472 |
| Certifications | RoHS, CE, REACH |
| Applications | 10GBASE-ER / 10GBase-EW Ethernet, 10G Fiber Channel, Fiber Media Converters |
| Dimensions (L×W×H) | 56.7 × 13.7 × 8.5 mm |
| Weight | 0.03 kg |
| Cooling Type | Passive |
| Laser Safety | Class 1 FDA and IEC 60825-1 Compliant |






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