




Generic Compatible 100GBASE QSFP28 PSM4 2km DOM MPO8/12 SMF Optical Transceiver Module
QSFP28-103-PS4-2-MPO8/12
- Broad Multi-Brand Compatibility
- Flexible Customization Support
- Tested for Reliable Performance
- Fast Response & Delivery
- Professional Technical Support
The FC-LINK QSFP28 100G PSM4 2km MPO 8/12 is a high-performance, four-channel pluggable parallel fiber-optic transceiver designed for 100G Ethernet applications. This full-duplex module features four independent transmit and receive channels, each supporting 26Gbps, delivering a total aggregate data rate of 104Gbps over distances of up to 2km on single-mode fiber.Equipped with a 1310nm DFB laser array, the transceiver connects via an MPO/MTP optical fiber ribbon cable. As a parallel transceiver, the QSFP28 PSM4 enhances port density and reduces total system costs, making it an efficient solution for high-speed networking environments.
| SPECIFICATIONS | |||
|---|---|---|---|
| Product Model | QSFP28-103-PS4-2-MPO8/12 | Manufacturer brand | FC-LINK |
| Package Type | QSFP28 | Optical connector | MPO 8C/12C |
| Max Data Rate | 100Gbps | Channel Data Rate | 26Gbps |
| Effective transmission distance | 2km | ||
| Wavelength | 1310nm | Operating voltage | 3.3V |
| Fiber Type | SMF | Core Size | 9/125 |
| Transmitter Type | DFB | Receiver Type | PIN |
| TX Power | -9.4~2.0dBm | Receiver Sensitivity | -11.35dBm |
| Digital Optical Monitoring(DOM) | YES | Receiver Overload | 2.5dBm |
| Power Consumption | <3.5W | Protocols | 100G Ethernet Proprietary High Speed Interconnections Data center |
| 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.
| Parameter | Symbol | Min. | Max. | Unit | |||||
| Power supply voltage | VCC | -0.3 | 3.6 | V | |||||
| Storage temperature | TC | -40 | 85 | ℃ | |||||
| Relative humidity | RH | 0 | 85 | % | |||||
| Recommended Operating Environment | |||||||||
| Parameter | Symbol | Min | Typical | Max | Unit | ||||
| Power supply voltage | VCC | 3.135 | 3.3 | 3.465 | V | ||||
| Operating case temperature | Tca | 0 | - | 70 | ℃ | ||||
| Electrical Characteristics | |||||||||
| Parameter | Symbol | Min | Typical | Max | Unit | Ref | |||
| Transmitter | |||||||||
| Input differential impedance | Rin | - | 100 | - | Ω | 1 | |||
| Differential input voltage amplitude | △Vin | 300 | - | 1100 | mVp-p | - | |||
| Input logic level high | VIH | 2 | - | VCC | V | - | |||
| Input logic level low | VIL | 0 | - | 0.8 | V | - | |||
| Receiver | |||||||||
| Output differential impedance | Rout | - | 100 | - | Ω | 1 | |||
| Differential output swing,per lane | Vout | 300 | - | 800 | mVp-p | 2 | |||
| Output logic level high | VOH | VCC-0.5 | - | VCC | V | - | |||
| Output logic level low | VOL | 0 | - | 0.4 | V | - | |||
| Notes: [1]AC coupled. [2]Into 100 ohm differential termination. | |||||||||
| Transmitter Specifications-Optical | |||||||||
| Parameter | Symbol | Min | Typical | Max | Unit | - | |||
| Center wavelength | λC | 1295 | - | 1325 | nm | 1 | |||
| RMS spectral width | λrms | - | - | 3.5 | nm | 1 | |||
| Average launch power, each lane | PAVG | -9.4 | - | 2 | dBm | - | |||
| Optical modulation amplitude(OMA) | POMA | -4 | - | 2.2 | dBm | 1 | |||
| Difference in launch power between any two lanes | Ptx,diff | - | - | 5 | dB | - | |||
| Transmitter and dispersion penalty(TDP), each lane(max) | TDP | - | - | 2.9 | dBm | 1 | |||
| Rise/Fall time | Tr/Tf | - | - | 30 | ps | - | |||
| Extinction ratio | ER | 3.5 | - | - | dB | - | |||
| Relative intensity noise | Rin | - | - | -128 | dB/Hz | - | |||
| Optical return loss tolerance | TOL | - | - | 20 | dB | - | |||
| Transmitter reflectance | RT | - | - | -12 | dB | - | |||
| Transmitter eye mask margin | EMM | 10 | - | - | % | 2 | |||
| Transmitter eye mask definition {X1,X2, X3,Y1,Y2,Y3} | - | [0.31,0.4,0.45,0.34,0.38,0.4} | - | - | |||||
| Average launch power OFF transmitter, each lane | Poff | -30 | dBm | - | |||||
| Receiver Specifications-Optical | |||||||||
| Parameter | Symbol | Min. | Typical | Max. | Unit | - | |||
| Center wavelength | λC | 1295 | - | 1325 | nm | - | |||
| Damage threshold | THd | 3 | - | - | dBm | - | |||
| Overload,each lane | OVL | 2.5 | - | - | dBm | - | |||
| Receiver sensitivity in OMA,each Lane | SEN | - | - | -11.35 | dBm | - | |||
| Difference in receive power between any two lanes(OMA) | Prx,diff | - | - | 5 | dB | - | |||
| Signal loss assert threshold | LOSA | -30 | - | - | dBm | - | |||
| Signal loss de-assert threshold | LOSD | - | - | -12 | dBm | - | |||
| LOS hysteresis | LOSH | 0.5 | - | - | dB | - | |||
| Optical return Loss | ORL | - | - | -12 | dBm | - | |||
| Notes: [1]Transmitter wavelength,RMS spectral width and power need to meet the OMAm inus TDP specs to guarantee link performance. [2]The eyediagram is tested with 1000 waveform. | |||||||||
| Electrical Pad Layout |
| Pin Definition | |||||||||
| Pin | Symbol | Name/Description | |||||||
| 1 | GND | Ground | |||||||
| 2 | Tx2n | Transmitter inverted data input | |||||||
| 3 | Tx2p | Transmitter non-inverted data input | |||||||
| 4 | GND | Ground | |||||||
| 5 | Tx4n | Transmitter inverted data input | |||||||
| 6 | Tx4p | Transmitter non-inverted data input | |||||||
| 7 | GND | Ground | |||||||
| 8 | ModSelL | Module select | |||||||
| 9 | ResetL | Module reset | |||||||
| 10 | VCCRx | +3.3V power supply receiver | |||||||
| 11 | SCL | 2-wire serial interface clock | |||||||
| 12 | SDA | 2-wire serial interface data | |||||||
| 13 | GND | Ground | |||||||
| 14 | Rx3p | Receiver non-inverted data output | |||||||
| 15 | Rx3n | Receiver inverted data output | |||||||
| 16 | GND | Ground | |||||||
| 17 | Rxlp | Receiver non-inverted data output | |||||||
| 18 | Rx1n | Receiver inverted data output | |||||||
| 19 | GND | Ground | |||||||
| 20 | GND | Ground | |||||||
| 21 | Rx2n | Receiver inverted data output | |||||||
| 22 | Rx2p | Receiver non-inverted data output | |||||||
| 23 | GND | Ground | |||||||
| 24 | Rx4n | Receiver inverted data output | |||||||
| 25 | Rx4p | Receiver non-inverted data output | |||||||
| 26 | GND | Ground | |||||||
| 27 | ModPrsL | Module present | |||||||
| 28 | IntL | Interrupt | |||||||
| 29 | VCC Tx | +3.3V power supply transmitter | |||||||
| 30 | VCC1 | +3.3V power supply | |||||||
| 31 | LPMode | Low power mode | |||||||
| 32 | GND | Ground | |||||||
| 33 | Tx3p | Transmitter non-inverted data input | |||||||
| 34 | Tx3n | Transmitter inverted data input | |||||||
| 35 | GND | Ground | |||||||
| 36 | Txlp | Transmitter non-inverted data input | |||||||
| 37 | Tx1n | Transmitter inverted data input | |||||||
| 38 | GND | Ground | |||||||

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.
Related products
-

Generic Compatible 800GBASE-SR8 OSFP 850nm 50m DOM MPO16/2MPO8 MMF Optical Transceiver Module
OSFP-800(8x100G)-850-005-(SR8)-MPO16/2MPO8/12
-

25G SFP28 BIDI LR Transceiver for 10km SMF Links, 1270/1330nm Simplex LC
SFP28BD-25-1213-10(LR)-LC
-

25G LWDM O-Band SFP28 Transceiver for 40km SMF Links, Duplex LC
SFP28-25-LWD-40-LCD
-

10G SFP+ BIDI LR Transceiver for 10km SMF Links, 1270/1330nm Simplex LC
SFP+BD-10-1213-10(LR)-LC















