Description
Features of QSFP28-100G-SR4
- Supports 103.1Gbps aggregate bit rates
- 78Gbps 850nm VCSEL transmitter and PIN receiver
- Maximum link length of 70m on OM3 MMF and 100m on OM4 MMF
- Single MPO receptacle
- Hot pluggable QSFP28 form factor
- Power dissipation < 2.5W
- All-metal housing for superior EMI performance
- RoHS6 compliant (lead free)
- Operating case temperature: Commercial: 0oC to +70°C
100G Optical Transceiver Application
- ToR (Top of Rack) connection: The connection between switches and servers within the same rack or adjacent racks.
- Interconnection within the computer room: Short distance links between core switches and aggregation switches in small computer rooms.
Standards
- Compliant with QSFP28 MSA
- Compliant with SFF-8636
- Compatible with IEEE802.3bm
100G Optical Transceiver Parameter
| Parameter | Symbol | Min. | Typical | Max. | Unit | Note |
| Transmitter Section | ||||||
| Lane Centre Wavelength (range) | λC | 840 | 860 | nm | ||
| Spectral Width (RMS) | σ | 0.6 | nm | |||
| Average Optical Power per Lane | Pout | -8.4 | +2.4 | dBm | 1 | |
| OMA Power per Lane | OMA | -6.4 | 3 | dBm | 1 | |
| Laser Off Power per Lane | Poff | – | – | -30 | dBm | |
| Extinction Ratio | ER | 3 | – | – | dB | 2 |
| Relative Intensity Noise | RIN | – | – | -128 | dB/Hz | |
| Optical Return Loss Tolerance | – | – | 12 | dB | ||
| Transmitter eye mask definition
{X1, X2, X3, Y1, Y2, Y3} |
Compliant with IEEE802.3bm
{0.3 0.38, 0.45, 0.35, 0.41, 0.5} |
2 | ||||
| Receiver Section | ||||||
| Lane Center Wavelength (range) | λC | 840 | 860 | nm | ||
| Average Receiver Power per Lane | RXPX | -10.3 | 2.4 | dBm | 3 | |
| OMA Stressed Sensitivity per Lane | RXsens | -5.2 | dBm | 3 | ||
| Los Assert | LOSA | -30 | – | – | dBm | |
| Los Dessert | LOSD | – | – | -13 | dBm | |
| Los Hysteresis | LOSH | 0.5 | – | 5 | dB | |
| Overload per Lane | Pin-max | – | – | 2.4 | dBm | 3 |
| Receiver Reflectance | – | – | -12 | dB | ||
| Damage Threshold per Lane | – | – | 3.5 | dBm | ||
Notes:
- The optical power is launched into 50/125µm MMF.
- Measured with a PRBS 231-1test pattern @25.78Gbps.
- Measured with a PRBS 231-1 test pattern @25.78Gbps, ER=3dB, BER <10-12.
QSFP28-100G-SR4 Mechanical Dimension
Ordering Information
| Part Number | Product Description |
| QSFP28-100G-SR4 | 100Gbps QSFP28 SR4, 100m on MMF(OM4), MPO receptacle, 0ºC ~ +70ºC, With DDM. |
