
Designed for 40G Ethernet data center and enterprise network environments, the 40G QSFP+ QSFP-40G-SR4-S 150m 850nm MPO-12/UPC Module, Cisco provides 41.25Gbps throughput in a QSFP+ form factor. It operates at 850nm over fiber through a MTP/MPO-12 Male connector and supports link lengths up to 150m@OM4/100m@OM3. The module meets IEEE 802.3 40GBASE-SR4, SFF-8436 and includes digital diagnostic monitoring for live status readout.
Product Highlights
- QSFP+ form factor, 41.25Gbps data rate
- Wavelength: 850nm
- Connector: MTP/MPO-12 Male
- Reach: up to 150m@OM4/100m@OM3
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| Cisco Compatible | QSFP-40G-SR4 |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP+ |
| Max. Data Rate | 41.25Gbps |
| Wavelength | 850nm |
| Max. Transmission Distance | 150m@OM4/100m@OM3 |
| Connector | MTP/MPO-12 Male |
| Cable Type | MMF |
| Transmitter Type | VCSEL |
| Receiver Type | PIN |
| TX Power | -7.6~2.4dBm |
| Receiver Sensitivity | <-5.4dBm |
| Digital Optical Monitoring | Yes |
| Receiver Overload | 2.4dBm |
| Max. Power Consumption | ≤1.5W |
| Core Size | 50um |
| Extinction Ratio | >3dB |
| Modulation | NRZ |
| Host FEC | Supported |
| Modal Bandwidth | 2000 (OM3) MHz*km4700 (OM4) MHz*km |
| Operating Temperature | 0 to 70°C (32 to 158°F) |
| Protocols | IEEE 802.3 40GBASE-SR4, SFF-8436 |
Applications
Built for 40G Ethernet data center and enterprise network environments, this QSFP+ module carries 41.25Gbps over twinax copper up to 150m@OM4/100m@OM3 per link. The MTP/MPO-12 Male interface and 850nm optics match the standard cabling plant used in modern data halls, so existing trunks can be reused. Compatibility with Cisco systems is verified in our own test lab before shipment, so the unit works out of the box as an equivalent of QSFP-40G-SR4.
Standards and Compatibility
This product is designed and tested to comply with IEEE 802.3 40GBASE-SR4, SFF-8436. It is interoperable with Cisco equipment and serves as a direct equivalent to the Cisco part number QSFP-40G-SR4.
Ordering Information
Our part number for this module is QSFP-SR4-40G. When ordering, just let us know the quantity and whether you need the compatibility coding for a particular switch brand; labeling and packaging can also follow your channel requirements.
Custom-made Fiber Products
As a manufacturer serving the fiber optic industry since 1995, we have strong in-house manufacturing and design capability. From early GBIC, Xenpak and X2 modules to today's SFP, SFP+, QSFP, QSFP-DD and OSFP products, we grow together with the industry. OEM and custom-designed transceivers and cables are welcome, and our factory-direct pricing is very competitive compared with online retail stores.
How We Ship
Most orders travel by international express and arrive within days; palletized freight by air or sea is used for volume orders. If you prefer, we ship on your DHL, UPS or FedEx account, or deliver to your appointed agent in China for onward consolidation.
Our Testing Process
Production samples and every outgoing batch pass through bit-error-rate measurement, temperature verification and plug-in compatibility checks on mainstream switches and routers. Because we are the manufacturer, any issue found in testing is fed back to the production line immediately instead of being passed on to customers.
Packaging Options
Default packaging is simple and protective: sealed bag, blister tray, export carton. For OEM customers we also offer white-label packing, custom printed boxes and per-unit labeling with your own part numbers, so the goods can go straight into your sales channel.



