25G DWDM C-Band SFP28 Transceiver for 10km SMF Links, Duplex LC
SFP28-25-DWC-10-LCD
- Broad Multi-Brand Compatibility
- Flexible Customization Support
- Tested for Reliable Performance
- Fast Response & Delivery
- Professional Technical Support
The FC-LINK SFP28 25G DWDM (C Band) 10km LC DX transceiver is a high-performance module designed to deliver 25GBase-DWDM connectivity over single-mode fiber (SMF) for distances up to 10km. Utilizing an LC duplex connector, it provides reliable 25GBASE Ethernet connectivity for 25G Ethernet, telecommunications, and data center applications.This transceiver is fully compliant with SFP28 MSA specifications as well as CPRI and eCPRI standards, ensuring compatibility and seamless integration into modern network infrastructures.
| SPECIFICATIONS | |||
|---|---|---|---|
| Product Model | SFP28-25-DWC-10-LCD | Manufacturer Brand | FC-LINK |
| Package Type | SFP28 | Optical Connector | Duplex LC |
| Max Data Rate | 25.78G | Channel Data Rate | - |
| Effective Transmission Distance | 10km | ||
| Wavelength | C17-C61 | Operating Voltage | 3.3V |
| Fiber Type | SMF | Core Size | 9/125µm |
| Transmitter Type | EML DWDM | Receiver Type | PIN |
| TX Power | -2~6dBm | Receiver Sensitivity | <-12dBm |
| Digital Optical Monitoring(DOM) | YES | Receiver Overload | - |
| Power Consumption | 2W | 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. | Max. | Unit | |||||
| Storage temperature range | TS | -40 | 85 | °C | |||||
| Relative humidity | RH | - | 95 | % | |||||
| Recommended Operating Conditions | |||||||||
| Parameter | Symbol | Min. | TyP. | Max. | Unit | ||||
| Operating case temperature range | TC | -40 | - | 85 | °C | ||||
| Power supply voltage | VCC | 3.14 | 3.3 | 3.46 | V | ||||
| Bit rate | BR | - | 25.78125 | - | Gb/s | ||||
| Bit error ratio | BER | - | - | 5 E-5 | - | ||||
| Max supported link length | L | - | - | 10 | km | ||||
| Optical Characteristics | |||||||||
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Note | |||
| Transmitter | |||||||||
| Nominal wavelength | λC | 1529.55 | - | 1561.42 | nm | - | |||
| Center wavelength spacing | ΔT | - | 100 | - | GHz | - | |||
| Wavelength tolerance | ΔCW | -80 | - | 80 | pm | - | |||
| Side mode suppression ratio | SMSR | 30 | - | - | dB | - | |||
| Spectral width(-20dB) | Δλ | - | - | 0.5 | nm | - | |||
| Average optical power | Pavg | 0 | - | 5 | dBm | - | |||
| Extinction ratio | ER | 6 | - | - | dB | - | |||
| Mask Margin|5E -5 | Margin | 10 | - | - | % | - | |||
| Dispersion Penalty | TDP | - | - | 3 | dB | - | |||
| Average optical power of transmitter off | Poff | - | - | -30 | dBm | - | |||
| Receiver | |||||||||
| Center wavelength | λC | 1260 | - | 1620 | nm | - | |||
| Transmitting distance | TD | - | 10 | km | - | ||||
| Average receiver sensitivity | Sens | - | - | -18 | dBm | - | |||
| Receiver iverload | Rod | -5 | - | - | dBm | - | |||
| Optical return loss | ORL | 26 | - | 1561.42 | dB | - | |||
| LOS assert | LOSA | -35 | - | - | dBm | - | |||
| LOS de-assert | LOSD | - | - | -19 | dBm | - | |||
| LOS hysteresis | LOSH | 0.5 | - | 5 | dB | - | |||
| Electrical Characteristics | |||||||||
| Parameter | Symbol | Min. | Typ. | Max. | Unit | ||||
| Supply voltage | VCC | 3.14 | 3.3 | 3.46 | V | ||||
| Power consumption | Por | - | - | 2 | W | ||||
| Transmitter | |||||||||
| Input differential impedance | Rin | 90 | 100 | 110 | Ω | ||||
| Differential data input | VIN | 190 | - | 700 | mVp-p | ||||
| Transmit disable voltage | VDIS | 2 | - | VCCHOST | V | ||||
| Transmit enable voltage | VEN | VEE | - | VEE+0.8 | V | ||||
| Transmit fault assert voltage | VFA | 2 | - | VCCHOST | V | ||||
| Transmitfault de-assert voltage | VFDA | VEE | - | VEE+0.4 | V | ||||
| Receiver | |||||||||
| Differential data output | VOD | 350 | - | 850 | mVp-p | ||||
| Output rise time@20%~80% | tRISE | 25 | - | - | PS | ||||
| Output fall time@20%~80% | tFALL | 25 | - | - | PS | ||||
| LOS fault | VLOSFT | 2 | - | VCCHOST | V | ||||
| LOS normal | VLOSNR | VEE | - | VEE+0.4 | V | ||||
| PIN DEFINITIONS |
| PIN DEFINITIONS | |||||||||
| Pin | Symbol | Name | Description | ||||||
| 1,17,20 | VeeT | Transmitter signal ground | These pins should be connected to signal ground on the host board. | ||||||
| 2 | TX fault | Transmitter fault out(OC) | Logic“1 ”output = laser fault (laser off before t_fault) Logic“0”output = normal operation This pin is open collector compatible, and should be pulled up to Host Vcc with a 10k Ω resistor. |
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| 3 | TX disable | Transmitter disable in(LVTTL) | Logic“1 ”input (or no connection) = Laser off Logic“0”input = laser on This pin is internally pulled up to Vc cT with a 10 kΩ resistor. |
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| 4 | SDA | Module definition identifiers | Serial ID with S FF 8472 diagnostics module Definition pins should be pulled up to Host Vcc with 10kΩ resistors. | ||||||
| 5 | SCL | ||||||||
| 6 | MOD_ABS | ||||||||
| 7 | RS0 | Receiver rate select (LVTTL) Transmitter rate select (LVTTL) |
These pins have an internal 30k Ω pull-down to ground. A signal on either of these pins will not affect module performance. | ||||||
| 9 | RS1 | ||||||||
| 8 | LOS | Loss of signal out(OC) | Sufficient optical signal for potential BER < 1 x 1 0- 1 2 = Logic“0” Insufficient optical signal for potential BER < 1 x 1 0- 1 2 = Logic“1 ” This pin is open collector compatible, and should be pulled up to Host Vcc with a 1 0k Ω resistor. |
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| 10,11,14 | VeeR | Receiver signal ground | These pins should be connected to signal ground on the host board. | ||||||
| 12 | RD- | Receiver negative DATA out(CML) | Light on = logic“0”output receiver DATA out put is internally AC coupled and series termin ated with a 50Ω resistor. | ||||||
| 13 | RD+ | Receiver positive DATA out (CML) | Light on = Logic“1 ”Output Receiver DATA output is internally AC coupled and series terminated with a 50Ω resistor. | ||||||
| 15 | VccR | Receiver power supply | This pin should be connected to a filtered +3.3V power supply on the host board.See Figure 3.recommended power supply filter | ||||||
| 16 | VccT | Transmitter power supply | This pin should be connected to a filtered +3.3V power supply on the host board.See Figure 3.Recommended power supply filter | ||||||
| 18 | TD+ | Transmitter positive DATA in (CML) | Logic“1 ”Input = Light on Transmitter DATA inputs are internally AC coupled and terminated with a differential 100 Ω resistor. |
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| 19 | TD- | Transmitter negative DATA in (CML) | Logic“0”Input = Light on Transmitter DATA inputs are internally AC coupled and terminated with a differential 100 Ω resistor. |
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| DDM ACCURACY | |||||||||
| Parameter | Symbol | Min . | Max. | Unit | |||||
| Temperature | Tc | -3 | 3 | ℃ | |||||
| Voltage | Vc | -3 | 3 | % | |||||
| Ibias | Icc | -10 | 10 | % | |||||
| Tx power | TXPWR | -3 | 3 | dB | |||||
| Rx power | RXPWR | -3 | 3 | dB | |||||
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.
