25G CWDM SFP28 Transceiver for 10km SMF Links, Duplex LC
SFP28-25-CW-10-LCD
- Broad Multi-Brand Compatibility
- Flexible Customization Support
- Tested for Reliable Performance
- Fast Response & Delivery
- Professional Technical Support
The FC-LINK SFP28 25G CWDM 10km LC DX transceiver is a high-performance module designed for 25GBase-CWDM connectivity, delivering data rates of up to 25Gbps over single-mode fiber (SMF) with a range of 10km. Operating within a wavelength range of 1270nm to 1370nm and utilizing an LC duplex connector, this transceiver is ideal for 25G Ethernet, telecom, and data center applications.Fully compliant with the SFP28 MSA, CPRI, and eCPRI standards, it ensures seamless integration and reliable performance in high-speed network environments.
| SPECIFICATIONS | |||
|---|---|---|---|
| Product Model | SFP28-25-CW-10-LCD | Manufacturer Brand | FC-LINK |
| Package Type | SFP28 | Optical Connector | Duplex LC |
| Max Data Rate | 25.78Gbps | Channel Data Rate | - |
| Effective Transmission Distance | 10km | ||
| Wavelength | 1270/1290/1310/1330/1350/1370/1470/1490/1510/1530/1550/1570nm | Operating Voltage | 3.3V |
| Fiber Type | SMF | Core Size | 9/125µm |
| Transmitter Type | DFB CWDM | Receiver Type | PIN |
| TX Power | 0~6dBm | Receiver Sensitivity | <-14dBm |
| Digital Optical Monitoring(DOM) | YES | Receiver Overload | - |
| Power Consumption | 1.3W | Protocols | MSA, CPRI, eCPRI |
| Operating Temperature(Commercial) | 0℃~+70℃ | Storage Temperature(Commercial) | -40℃~+85℃ |
Server-to-Switch Data Center Links
Used for 10G/25G/100G optical uplinks between servers and top-of-rack switches in high-density data center deployments.
Building-to-Building Campus Backbone
Suitable for 1G/10G fiber links between office buildings, campus distribution rooms, and backbone aggregation points.
Access-to-Core Enterprise Uplinks
Designed for switch uplinks from access to aggregation or core layers in enterprise and campus network architectures.
Industrial Switching in Harsh Environments
Applied in industrial Ethernet, automation systems, and outdoor cabinets where wider temperature tolerance and stable fiber communication are required.
Compatible Brands
Customization Options
Vendor Coding
Private Label
Custom Part Number
Packaging Design
Temperature Grade Selection
| Absolute Maximum Ratings | |||||||||
| Parameter | Symbol | Min. | TyP. | Max. | Unit | ||||
| Storage temperature | TS | -40 | - | 85 | °C | ||||
| Supply currnt | TS | - | - | 330 | mA | ||||
| Maximum power dissipation | PD | - | - | 1 | W | ||||
| Aggregate bit rate | ABR | 24.33 | - | 25.78 | Gb/s | ||||
| Operating distance | - | 2 | - | 10000 | m | ||||
| Recommended Operating Conditions | |||||||||
| Parameter | Symbol | Min. | TyP. | Max. | Unit | ||||
| Operating case temperature | TOP | 0 | - | 70 | °C | ||||
| Power supply voltage | VCC | 3.13 | 3.3 | 3.46 | V | ||||
| Instantaneous peak current at hot plug | ICC_IP | - | - | 400 | mA | ||||
| Sustained peak current at hot plug | ICC_SP | - | - | 330 | mA | ||||
| Optical Characteristics | |||||||||
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Note | |||
| Transmitter | |||||||||
| Nominal wavelength | λC0 | 1264.5 1284.5 1304.5 1324.5 1344.5 1364.5 |
1271 1291 1311 1331 1351 1371 |
1277.5 1297.5 1317.5 1337.5 1357.5 1377.5 |
nm | - | |||
| Side-mode suppression ratio | SMSR | 37 | - | - | dB | - | |||
| Spectral width | Δλ | - | - | 1 | nm | - | |||
| OFF_average power | POFF | - | - | -40 | dBm | - | |||
| Average optical power | POUTL | 0 | - | 6 | dBm | - | |||
| Optical modulation amplitude | OMA | 0 | - | 6 | dBm | - | |||
| Extinction ratio | ER | 3.5 | - | - | dB | - | |||
| Transmitter and dispersion penalt (1271/1291/1311nm/1331 nm) |
TDP | - | - | 3 | dB | - | |||
| Transmitter and dispersion penalty(1351/1371nm) |
4.5 | ||||||||
| Optical return loss tolerance | ORLT | - | - | 20 | dB | - | |||
| Eye mask margin | - | 10@25℃ 5@70℃ &0℃ |
- | - | % | 1 | |||
| Crossing | - | 40 | 50 | 60 | % | - | |||
| Receiver | |||||||||
| Center wavelength | λC0 | 1271 | - | 1371 | nm | - | |||
| Overload input optical power | PMAX | 3 | - | - | dBm | - | |||
| Receiver sensitivity_OMA | BOL | - | - | -14.5 | dBm | 2 | |||
| Receiver sensitivity (OMA) | EOL | - | - | -14 | dBm | - | |||
| Optical return loss | ORL | 27 | - | - | dBm | - | |||
| Receiver reflectance | RXR | - | - | -30 | dBm | - | |||
| LOS de-assert | LOSD | - | - | -17 | dBm | - | |||
| LOS assert | LOSA | -30 | - | - | dBm | - | |||
| LOS hysteresis | - | 0.5 | - | 4 | dB | - | |||
| Notes: 1. EYE Mask Margin test conditions, sample waveform ≥1000 wfms, Hit Ratio 5E-5. 2. Measured with a PRBS 231-1 test pattern @25.78125Gbps, BER≤5E-5. |
|||||||||
| Electrical Characteristics | |||||||||
| Parameter | Symbol | Min. | Typ. | Max. | Unit | ||||
| Supply voltage | VCC | 3.14 | 3.3 | 3.46 | V | ||||
| Supply current | Icc | - | - | 330 | mA | ||||
| Transmitter | |||||||||
| Input differential impedance | Rin | - | 100 | - | Ω | ||||
| Single ended data input swing | VIN | 90 | - | 450 | mVp-p | ||||
| Transmit disable voltage | VDIS | 2 | - | VCCHOST+0.3 | V | ||||
| Transmit enable voltage | VEN | VEE | - | VEE+0.8 | V | ||||
| Transmit fault assert voltage | VFA | 2.2 | - | VCCHOST+0.3 | V | ||||
| Transmitfault de-assert voltage | VFDA | VEE | - | VEE+0.4 | V | ||||
| Receiver | |||||||||
| Single ended data output swing | VOD | 225 | - | 375 | mVp-p | ||||
| LOS fault | LOS_FT | 2.2 | - | VCCHOST+0.3 | V | ||||
| LOS normal | LOS_Nor | VEE | - | VEE+0.4 | V | ||||
| PIN DEFINITIONS |
| PIN DESCRIPTION | |||||||||
| Pin No. | Symbol | Logic | Description | ||||||
| 1,7,20 | VeeT | - | Connected to signal ground on the host board. | ||||||
| 2 | TX fault | LVTTL output | Module transmitter fault output | ||||||
| 3 | TX disable | LVTTL input | Module transmitter disable control | ||||||
| 4 | SDA | LVTTL input/output | 2-wire serial interface data | ||||||
| 5 | SCL | LVTTL input/output | 2-wire serial interface clock | ||||||
| 6 | MOD_ABS | - | Module absent (connected to module ground) | ||||||
| 7 | RS0 | LVTTL input | Rate select 0 (Rx): Low=CDR Bypass; high=CDR select | ||||||
| 8 | LOS | LVTTL output | Receiver loss of signal | ||||||
| 9 | RS1 | LVTTL input | Rate select 1 (Tx): Low=CDR Bypass; high=CDR select | ||||||
| 10,11,14 | VeeR | - | Connected to signal ground on the host board. | ||||||
| 12 | RD- | CML output | Receiver inverted data output, internally AC coupled and terminated. | ||||||
| 13 | RD+ | CML output | Receiver non-inverted data output, internally AC coupled and terminated. | ||||||
| 15 | VccR | - | Receiver power 3.3V supply | ||||||
| 16 | VccT | - | Transmitter power 3.3V supply | ||||||
| 18 | TD+ | CML input | Transmitter non-inverted data input, internally AC coupled and terminated. | ||||||
| 19 | TD- | LVTTL output | Transmitter inverted data Input, internally AC coupled and terminated. | ||||||
| DIGITAL DIAGNOSTIC MONITORING SPECIFICATIONS | |||||||||
| Parameter | Range | Accuracy | Unit | ||||||
| DDM Accuracy | |||||||||
| Operating case temperature | 0 to 70 | ±3 | ℃ | ||||||
| Voltage | 3.13 to 3.46 | ±3% | V | ||||||
| Tx bias current (each lane) | 20 to 80 | ±10 % | mA | ||||||
| Tx output power (each lane) | 0 to 6 | ±2 | dB | ||||||
| Rx power (each lane) | -14.5 to 3 | ±2 | dB | ||||||
| DIGITAL DIAGNOSTIC MONITORING SPECIFICATIONS | |||||||||
| Parameter | Comments | Unit | |||||||
| DDM Alarm & warning threshold | |||||||||
| Temp high alarm | 75 | ℃ | |||||||
| Temp low alarm | -5 | ℃ | |||||||
| Temp high warning | 70 | ℃ | |||||||
| Temp low warning | 0 | ℃ | |||||||
| VCC high alarm | 3.63 | V | |||||||
| VCC low alarm | 2.97 | V | |||||||
| VCC high warning | 3.46 | V | |||||||
| VCC low warning | 3.13 | V | |||||||
| Tx bias high alarm | 100 | mA | |||||||
| Tx bias low alarm | 10 | mA | |||||||
| Tx bias high warning | 80 | mA | |||||||
| Tx bias low warning | 20 | mA | |||||||
| Tx power high alarm | 8.2 | dBm | |||||||
| Tx power low alarm | -3 | dBm | |||||||
| Tx power high warning | 6 | dBm | |||||||
| Tx power low warning | 0 | dBm | |||||||
| Rx power high alarm | 5 | dBm | |||||||
| Rx Power Low Alarm | -16.5 | dBm | |||||||
| Rx Power High Warning | 3 | dBm | |||||||
| Rx Power Low Warning | -14.5 | dBm | |||||||
Performance Testing
Each module is tested before shipment to help ensure stable optical and electrical performance.
Compatibility Verification
Compatibility validation is available for major switch and router platforms.
Reliability Screening
Selected products support aging, temperature cycle, and stability testing for demanding applications.
Traceable Quality Control
Inspection and production records support more consistent quality control and batch traceability.
