| SPE | QSFP 40G 1270~1330nm 40KM LC DDM | 
| PN | QSFP+-ER4 | 
| Form Factor | QSFP+ | 
| Data Rate | 40 Gbps | 
| Wavelength | 1310nm | 
| Distance | 440km | 
| Cable Type | OS2 SMF | 
| Connector | LC Duplex | 
| Transmitter Type | DFB | 
| Receiver Type | PIN | 
| TX Power | -2.7~4.5dBm | 
| Receiver Sensitivity | -19dBm | 
| Power Consumption | <3.5W | 
| Temperature | 0 to 70°C | 
| DDM | Supported | 
| Protocols | IEEE 802.3ba, QSFP+ MSA, SFF-8436, SFF-8636, Infiniband 40G QDR | 
| Bit Error Ratio | 1E-12 | 
| Warranty | 3 Years | 
| Package Type | neutral packing, retail packing, plastic packing,carton box, etc | 
| Delivery ways | DHL, FedEx,EMS,TNT, UPS,etc. It takes 3-7 days. | 
| Services | OEM/ODM | 
| Sample | Available | 
| Supply | In stock | 
| Place of Origin | Guangdong,China | 
Advantages,
● Hot-pluggable QSFP+ form factor
● Supports 41.3Gb /s aggregate bit rate
● Power consumption<3.5 W.
● 18.5 dB Link Insertion Loss Budget
● Complies with RoHS-6 standard
● Commercial case temperature range from 0°C to 70°C
● Single 3.3V power supply
●The maximum link length of single-mode optical fiber (SMF) is 40km
● Uncooled 4x10Gb/s CWDM transmitter
● XLPPI electrical interface
● Duplex LC receptacles
● Built-in digital diagnostics, including Tx/Rx power monitoring
● Applied in Campus Network and Data Center
● Digital Optical Monitoring Support
● Compliant to SFF-8436 and QSFP MSA
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