40G QSFP+ Transceiver ER4 Module 40km
Short Description:
Upgrade your long-haul optical network with the 40G QSFP+ Transceiver ER4 Module 40km, a high-performance module engineered for reliable 40-kilometer transmission over single-mode fiber (SMF). Fully compliant with the IEEE 802.3ba 40GBASE-ER4 standard and QSFP MSA, this hot-pluggable transceiver utilizes 4 CWDM lanes (1271nm, 1291nm, 1311nm, 1331nm) and adva…Description
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Description
Upgrade your long-haul optical network with the 40G QSFP+ Transceiver ER4 Module 40km, a high-performance module engineered for reliable 40-kilometer transmission over single-mode fiber (SMF). Fully compliant with the IEEE 802.3ba 40GBASE-ER4 standard and QSFP MSA, this hot-pluggable transceiver utilizes 4 CWDM lanes (1271nm, 1291nm, 1311nm, 1331nm) and advanced DFB laser array technology paired with APD receivers. 40G QSFP+ Transceiver ensures minimal optical dispersion and signal integrity for metro networks, data center interconnects, and rack-to-rack switching. The unit supports an aggregate bandwidth of over 40Gbps with per-channel speeds up to 11.2Gbps. Built to operate in harsh environments, it features built-in digital diagnostic monitoring (DDMI) , a single +3.3V power supply, and a duplex LC connector for seamless integration into enterprise switches and routers.
40G QSFP+ Transceiver Features
- Extended Long-Haul Reach: Supports 40km transmission over single-mode fiber (SMF), ideal for metro and wide-area networks.
- 4-Band CWDM Technology: Utilizes 4 CWDM lanes (1271nm, 1291nm, 1311nm, 1331nm) with MUX/DEMUX design to minimize dispersion.
- High-Speed Bandwidth: Delivers aggregate bandwidth of >40Gbps with each channel supporting up to 11.2Gbps.
- Standards Compliance: Fully compliant with IEEE 802.3ba 40GBASE-ER4, QSFP MSA, and Infiniband QDR/DDR data rates.
- Advanced Optical Components: Features a high-performance DFB laser array on the transmitter side and Avalanche Photodiode (APD) on the receiver side for maximum sensitivity.
- Digital Diagnostics: Integrated digital diagnostic functions (DDMI) for real-time monitoring of temperature, voltage, laser bias, and optical power.
- Durable & Reliable: Designed to withstand harsh operating conditions (0°C to 70°C) regarding temperature, humidity, and EMI interference.
- Power Efficiency: Operates from a single +3.3V power supply with LVCMOS/LVTTL control signals and low power mode support.
- Interface: Equipped with a standard duplex LC connector and 38-pin electrical interface for easy deployment.
- Environmental Compliance: RoHS compliant, meeting global environmental standards.
Applications
2 Rack to rack
2 Data centers Switches and Routers
2 Metro networks
2 Switches and Routers
2 40G BASE-ER4 Ethernet Links
l Absolute Maximum Ratings
| Parameter | Symbol | Min. | Typical | Max. | Unit |
| Storage Temperature | TS | -40 | +85 | °C | |
| Supply Voltage | VCCT, R | -0.5 | 4 | V | |
| Relative Humidity | RH | 0 | 85 | % |
l Recommended Operating Environment:
| Parameter | Symbol | Min. | Typical | Max. | Unit |
| Case operating Temperature | TC | 0 | +70 | °C | |
| Supply Voltage | VCCT, R | +3.13 | 3.3 | +3.47 | V |
| Supply Current | ICC | 1100 | mA | ||
| Power Dissipation | PD | 3.5 | W |
l Electrical Characteristics (TOP = 0 to 70 °C, VCC = 3.135 to 3.465 Volts)
| Parameter | Symbol | Min | Typ | Max | Unit | Note |
| Data Rate per Channel | – | 10.3125 | 11.2 | Gbps | ||
| Power Consumption | – | 2.5 | 3.5 | W | ||
| Supply Current | Icc | 0.75 | 1.1 | A | ||
| Control I/O Voltage-High | VIH | 2.0 | Vcc | V | ||
| Control I/O Voltage-Low | VIL | 0 | 0.7 | V | ||
| Inter-Channel Skew | TSK | 150 | Ps | |||
| RESETL Duration | 10 | Us | ||||
| RESETL De-assert time | 2000 | ms | ||||
| Power On Time | 2000 | ms | ||||
| Transmitter | ||||||
| Single Ended Output Voltage Tolerance | 0.3 | 4 | V | 1 | ||
| Common mode Voltage Tolerance | 15 | mV | ||||
| Transmit Input Diff Voltage | VI | 150 | 1200 | mV | ||
| Transmit Input Diff Impedance | ZIN | 85 | 100 | 115 | ||
| Data Dependent Input Jitter | DDJ | 0.3 | UI | |||
| Receiver | ||||||
| Single Ended Output Voltage Tolerance | 0.3 | 4 | V | |||
| Rx Output Diff Voltage | Vo | 370 | 600 | 950 | mV | |
| Rx Output Rise and Fall Voltage | Tr/Tf | 35 | ps | 1 | ||
| Total Jitter | TJ | 0.3 | UI | |||
Note:
- 20～80%
l Optical transceiver module Characteristics (TOP = 0 to 70°C, VCC = 3.135 to 3.465 Volts)
| Parameter | Symbol | Min | Typ | Max | Unit | Ref. |
| Transmitter | ||||||
| Wavelength Assignment | L0 | 1264.5 | 1271 | 1277.5 | nm | |
| L1 | 1284.5 | 1291 | 1297.5 | nm | ||
| L2 | 1304.5 | 1311 | 1317.5 | nm | ||
| L3 | 1324.5 | 1331 | 1337.5 | nm | ||
| Side-mode Suppression Ratio | SMSR | 30 | – | – | dB | |
| Total Average Launch Power | PT | – | – | +10.5 | dBm | |
| Average Launch Power, each Lane | -2.7 | – | +4.5 | dBm | ||
| Difference in Launch Power between any two Lanes (OMA) | – | – | 6.5 | dB | ||
| Optical Modulation Amplitude, each Lane | OMA | -0.7 | +5 | dBm | ||
| Launch Power in OMA minus Transmitter and Dispersion Penalty (TDP), each Lane | -1.5 | – | dBm | |||
| TDP, each Lane | TDP | 2.6 | dB | |||
| Extinction Ratio | ER | 5.5 | – | – | dB | |
| Transmitter Eye Mask Definition {X1, X2, X3, Y1, Y2, Y3} | {0.25, 0.4, 0.45, 0.25, 0.28, 0.4} | |||||
| Optical Return Loss Tolerance | – | – | 20 | dB | ||
| Average Launch Power OFF Transmitter, each Lane | Poff | -30 | dBm | |||
| Relative Intensity Noise | Rin | -128 | dB/HZ | 1 | ||
| Receiver | ||||||
| Damage Threshold | THd | 3.8 | dBm | 1 | ||
| Average Power at Receiver Input, each Lane | R | -21.2 | -4.5 | dBm | ||
| Receiver Power (OMA), each Lane | -1 | dB | ||||
| RSSI Accuracy | -2 | 2 | dB | |||
| Receiver Reflectance | Rrx | -26 | dB | |||
| Receiver Power (OMA), each Lane | – | – | 3.5 | dBm | ||
| Stressed Receiver Sensitivity in OMA, each Lane | – | – | -16.8 | dBm | ||
| Receiver Sensitivity(OMA), each Lane | Sen | – | – | -19 | dBm | |
| Difference in Receive Power between any two Lanes (OMA) | 7.5 | dB | ||||
| Receive Electrical 3 dB upper Cutoff Frequency, each Lane | 12.3 | GHz | ||||
| LOS De-Assert | LOSD | -22 | dBm | |||
| LOS Assert | LOSA | -35 | dBm | |||
| LOS Hysteresis | LOSH | 0.5 | dB | |||
Note：
- 12dB Reflection
Related article: What is QSFP? A Complete Guide 2025
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