25G CWDM SFP28 LR 1370nm 10km
- Adopts Hot-Pluggable SFP28 Package
- Full-Duplex Transceiver Module
- CWDM DFB Transmitter and PIN Receiver
- Complies with SFF-8472, SFF-8431, SFF-8432, and SFP28 MSA Ethernet Standards
- Maximum Power Consumption Less than 1.75W
- Built-in Digital Diagnostic Monitoring (DDM)
- Power Supply Voltage 3.3V
- Complies with RoHS Environmental Standards (Lead-Free)
- Class 1/1M Product, Complies with IEC60825-1 Requirements
- Meets Telcordia (Bellcore) GR-468-CORE Reliability Requirements
- Meets EMI and ESD Requirements
Warranty : 30-Day Free Return, 3-Year Free Replacement, 5-Year Warranty, Lifetime After-sales Technical Support.
| Product Model | SFP-25G-CWDM | Vendor Name | Walsun |
| Form Factor | SFP28 | Data Rate | 25.78Gbps |
| Wavelength | 1270-1370nm | Distance | 10km |
| Connector | C Duplex | Cable Type | SMF |
| Transmitter Type | DFB | Detector Types | PIN |
| TX Power | -7~2dBm | Receiver Sensitivity | < -12dBm |
| Power Consumption | ≤1.75W | Operation Temperature | 0~70°C |
| DDM | Support | EMC | Support |
| Modulation | NRZ | CDR | TX & RX Built-in CDR |
| Protocols | SFF-8472, SFF-8431, SFF-8432, SFP28 MSA, CPRI, eCPRI | ||
Q: Can an SFP28 port be interconnected with a QSFP28 port?
Yes, it is feasible. Configure the 100G QSFP28 port on your device to operate in 4x25G mode if supported, then insert a 100G module into it. Connect this to the SFP28 port using a 1-to-4 cable.
- For the setup involving modules and jumpers: Utilize a 25G SR module on the 25G end, a 100G SR4 module on the 100G end, and link them with a multimode MTP/MPO to 4xLC harness cable.
- Alternatively, for the branch cable: Employ a 100G to 4x25G breakout AOC/DAC cable for interconnection.
Q: Can a 25G SFP28 port support the use of 10G modules?
A: Most 25G ports on devices are designed to support multiple speeds, including 1G/10G/25G, enabling the utilization of modules with these three different data rates.
Q: What are the maximum transmission distances for 25G DAC and AOC?
A: The maximum transmission distance for DAC is 5 meters, while AOC can reach up to 100 meters.
Q: Is FEC functionality required when using 25G DAC?
A: According to the IEEE 802.3by standard, FEC is not necessary for 25G DAC transmission distances of 1, 2, or 3 meters; however, RS-FEC must be enabled for distances of 5 meters.
Q: What is a 25G dual-rate module?
A: A dual-rate module supports two data rate types. Specifically, a 25G dual-rate module is compatible with both 10G and 25G rates, allowing users to switch between these speeds on supported device ports.
| Product Number | Data Rate (Gb/s) |
Wavelength (nm) |
Reach (km) |
LD | Tx Power (dBm) |
PD | Rx Sens (dBm) |
Temperature (℃) |
Download |
| DWDM LR 10km | 25 | 1270~1450 | 10 | DML | -7.0～2 | PIN | < -11.5 | 0~70/-40~85 |  |
| DWDM LR 10km | 25 | 1470~1610 | 10 | DML | -7.0～2 | PIN | < -11.5 | 0~70/-40~85 | |
| DWDM LR 40km | 25 | 1270~1370 | 40 | DML | -3.0～6.0 | PIN | < -14 | 0~70/-40~85 | |
| DWDM LR 40km | 25 | 1470~1610 | 40 | DML | -3.0～6.0 | APD | < -14 | 0~70/-40~85 | |
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