Specifications
The 40Gbps QSFP+ SRBD Optical Transceiver is a high-performance, short-range module designed for duplex data communication over multimode fiber (MMF) using LC duplex connectors. Operating at a wavelength of 850nm and 900nm, the transceiver integrates four electrical lanes into two optical channels, each with a 20Gbps capacity, achieving a total aggregate bandwidth of 40Gbps. It supports transmission distances of up to 100 meters with OM3 fiber and 150 meters with OM4 fiber. The module adheres to QSFP+ MSA and IEEE 802.3ba standards, making it an ideal solution for 40Gb Ethernet interconnects, data aggregation, and high-speed backplane applications.
This transceiver operates on a single +3.3V power supply with a power consumption of up to 3.5W. Its hot-pluggable design allows for easy integration and maintenance, while its RoHS compliance ensures environmentally friendly use. Advanced features include internal multiplexing and demultiplexing for efficient signal handling and Loss of Signal (LOS) detection for enhanced diagnostics. The electrical interface uses a QSFP+ type edge connector, and the optical interface utilizes a conventional LC duplex connector, enabling reuse of existing cabling infrastructure. With an operating temperature range of 0°C to 70°C, this transceiver is a reliable choice for high-speed, short-range networking applications.
This hot-pluggable QSFP+ module integrates four electrical lanes at 10.3125 Gbps each, multiplexed into two 20 Gbps optical channels for a total 40Gbps bandwidth. It complies with IEEE 802.3ba 40GBASE-SR4 XLPPI and QSFP+ MSA (SFF-8436). Designed for reuse of legacy duplex LC cabling, it enables 40G Ethernet deployment without MPO infrastructure. The module operates over MMF with typical power dissipation of 2.5 W (max 3.5 W) on a single 3.3 V supply. Operating case temperature is 0 °C to +70 °C. Note: digital diagnostics are not supported.
Key Parameters
| Specification | Value | Notes |
|---|---|---|
| Form factor / connector | QSFP+ (hot-pluggable), LC duplex | Bi-Directional |
| Aggregate bandwidth | 40 Gbps | 4 × 10.3125 Gbps electrical lanes |
| Reach (OM3 fiber) | Up to 100 m | At 40G |
| Reach (OM4 fiber) | Up to 150 m | At 40G |
| Tx wavelength (CH1/CH2) | 850 nm / 900 nm | VCSEL laser |
| Spectral width (RMS) | ≤ 0.65 nm | — |
| Tx optical power | −4 to +5 dBm | Average per channel |
| Tx off power | ≤ –30 dBm | — |
| Extinction ratio | ≥ 3.5 dB | — |
| Receiver sensitivity | ≤ −11 dBm | Per channel |
| Receiver overload | +0.5 dBm max | — |
| LOS assert/de-assert | −30 dBm / −14 dBm | 0.5 dB hysteresis |
| Supply voltage | 3.13 – 3.47 V | Single 3.3 V supply |
| Power consumption | 2.5 W (typ.), 3.5 W (max) | <1000 mA current |
| Diagnostics | Not supported | — |
| Operating case temp. | 0 °C to +70 °C | Commercial grade |
| Compliance | IEEE 802.3ba 40GBASE-SR4 XLPPI, QSFP+ MSA SFF-8436, RoHS | Standards compliant |
