Description
Features of 400g sr8 transceiver
- Supports 425Gb/s PAM4
- Digital Diagnostics Monitoring Interface
- Built-in 400G PAM4 DSP
- Reachup to 100m over OM4 & OM5 MMF
- Hot-pluggable QSFP-DD form factor
- 8 channels 850nm VCSEL array
- 8 channels PIN photodetector array
- Commercial operating case temperature range: 0~ 70ºC
- RoHS compliant
- Power dissipation< 10W
- TDEC<4.5dB
- Single MPO-16 receptacle
Standard
- IEEE 802.3cm 400GBASE-SR8
- QSFP-DD MSA
- SFF-8636
Application
- The TOR switch is connected to the Leaf switch: in the same room, short-distance high-density uplink;
- Breakout mode: The SR8 module is highly suitable for splitting use. Through an eight-split-one (MPO-16 to 8xLC) breakout cable, one 400G port can be split into 8 50G ports, connecting low-rate devices.
Specification of 400g sr8 transceiver
| Absolute Maximum Ratings | ||||
| Parameter | Symbol | Min | Max | Unit |
| Storage Ambient Temperature | TSTG | -40 | 85 | ℃ |
| Operating Humidity | HO | 5 | 85 | % |
| Power Supply Voltage | Vcc | -0.3 | 3.6 | V |
| Signal Input Voltage | Vcc-0.3 | Vcc +0.3 | V | |
| Recommended Operating Conditions | |||||
| Parameter | Symbol | Min | Typical | Max | Unit |
| Operating Case Temperature | Tc | 0 | 70 | ℃ | |
| Power Supply Voltage | Vcc | 3.13 | 3.3 | 3.47 | V |
| Data Rate, each Lane（PAM4） | 53.125 | Gbps | |||
| Fiber Length 50/125μm core MMF | – | – | 100 | m | |
| Optical transmitter Characteristics | ||||||
| Parameter | Symbol | Min | Typical | Max | Unit | Notes |
| Launched Power (avg.) Per Lane | Pavg | -6 | 4 | dBm | ||
| Wavelength Range | λ0 | 840 | 850 | 860 | nm | |
| Spectral Width(-20dB) | ∆λ | 0.6 | nm | |||
| Extinction Ratio | ER | 3 | dB | |||
| Transmitter OFF Output Power | POff | -30 | dBm | |||
| Optical Modulation
Amplitude(OMA outer) |
OMA | -4.5 | 3 | dBm | ||
| Transmitter and dispersion
eye closure(TDEC) |
TDEC | 4.5 | dB | |||
| Optical receiver Characteristics | ||||||
| Parameter | Symbol | Min | Typical | Max | Unit | Notes |
| Receiver Wavelength Range | 840 | 850 | 860 | nm | ||
| Average Receiver Power Per Lane | -8.4 | 4 | dBm | |||
| Receiver Sensitivity Per Lane | Sen | -6.4 | dBm | 1 | ||
| Optical Power Input Overload | Pin-max | 5 | dBm | |||
| Receiver Reflectance | Rr | -12 | dB | |||
Ordering information
| Part. No | Specifications | ||||||||
| Pack | Rate
(Gbps) |
Tx
(nm) |
Po
(dBm) |
RX | Sen
(dBm) |
Temp
(℃) |
Reach
(M) |
DDM | |
| QSFP-DD-400G-SR8 | QSFP-DD | 400G | VCSEL 850 | -6~4 | PIN | <-6.4 | 0~70 | 100 | Y |
