25G CWDM SFP28 ER 1350nm 40km
- Adopts Hot-Pluggable SFP28 Package
- Full-Duplex Transceiver Module
- CWDM DML Transmitter and APD Receiver
- Complies with SFF-8472, SFF-8431, SFF-8432, and SFP28 MSA Ethernet Standards
- Maximum Power Consumption Less than 2W
- 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-CWDM40 | Vendor Name | Walsun |
| Form Factor | SFP28 | Data Rate | 25.78Gbps |
| Wavelength | 1270-1370nm | Distance | 40km |
| Connector | C Duplex | Cable Type | SMF |
| Transmitter Type | DML | Detector Types | APD |
| TX Power | 0~6dBm | Receiver Sensitivity | < -19dBm |
| Power Consumption | ≤2W | 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: What types of 25G SFP28 optical modules are there?
A: There are three types of 25G modules: 25G dual-fiber bidirectional modules (SR, LR, ER), 25G single-fiber bidirectional modules (BiDi), and 25G WDM color optical modules (CWDM, DWDM, LWDM).
Q: What is the maximum transmission distance for 25G SFP28 optical modules?
A: Currently, the SFP-25G-ER model boasts the greatest transmission distance, theoretically up to 40 kilometers. It’s plausible that future 25G optical modules could feature even longer transmission ranges.
Q: Are SFP28 optical modules backward compatible?
A: Yes, they support backward compatibility with 10G rates.
Q: Can an SFP28 port be interconnected with a QSFP28 port?
Absolutely. Configure the 100G QSFP28 port on your device to operate in a 4x25G mode (if supported), then insert a 100G module into it. Connect this to the SFP28 port using a 1:4 cable.
- For the setup with modules and jumpers: Employ a 25G SR module on the 25G side, a 100G SR4 module on the 100G side, and connect them using a multimode MTP/MPO to 4xLC harness cable.
- Alternatively, for the branch cable: Utilize a 100G to 4x25G breakout AOC/DAC cable for interconnection.
| 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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