25G CWDM SFP28 ER 1270nm 40km
- Hot-pluggable SFP28 package
- Full-duplex transceiver module
- CWDM DML transmitter and APD receiver
- Compliant 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
- RoHS compliant (lead-free)
- Class 1/1M product, compliant 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 | LC 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 |
| Support | SFF-8472, SFF-8431, SFF-8432, SFP28 MSA, CPRI, eCPRI | ||
Q: Can I apply for a discount if I make a large purchase?
A: The larger the order quantity, the greater the discount. You can directly inquire about quotes by calling 0755-23007456 or through online consultation.
Q: What should I do if there is a problem with my order?
A: If there’s an issue with your order, your sales representative will contact you promptly.
Q: How soon can your company ship my order after I place it?
A: Following the approval of your order, the product will require 1-3 working days for production and preparation. Afterwards, it will be shipped directly from our warehouse to you, and you will receive a notification SMS from us.
Q: What is the maximum transmission distance for a 25G SFP28 transceiver?
A: Presently, the theoretical maximum transmission distance achievable is 40 kilometers.
Q: Does the SFP28 optical module support backward compatibility?
A: Yes, it supports backward compatibility with 10G rates.
Q: Can an SFP28 port interconnect with a QSFP28 port?
A: Yes, they can interconnect. You may use either a module plus jumper or a breakout cable to do so.
- For the module+jumper setup: The 25G side employs a 25G SR module, while the 100G side uses a 100G SR4 module, with a multimode MTP/MPO to 4xLC harness cable connecting them in the middle.
- For the breakout cable: Utilize a 100G to 4x25G breakout AOC/DAC cable for the 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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