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by Juniper
Product Line: QSFP100GBASELR4
Product Type: transceiver module
Original price $657.00 - Original price $2,939.00
Original price
$657.00 - $2,939.00
Current price $2,939.00
Title: Surplus

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Product Description

The QSFP-100GBASE-LR4 module supports a 100 Gigabit Ethernet speed over a single-mode fiber (SMF) with a duplex LC connector. It operates with a signaling rate of 25.78125 GBd +/- 100 ppm per lane across four wavelengths ranging from 1294.53 nm to 1301.09 nm, ensuring compatibility with standard network requirements. Designed for long-range transmission, it achieves a distance of 10 km, with a power consumption of up to 3.5 W and operates within a temperature range of 0° C to 70° C.

Key Feature for the QSFP100GBASELR4

  • What is the maximum data rate supported by this Ethernet device?
    The maximum data rate supported is 103.125Gbps, which is achieved by combining four lanes each running at 25.78Gbps.
  • How does the part specified operate in terms of power supply?
    It operates with a +3.3V single power supply.
  • What type of laser does the transmitter use?
    The transmitter uses a DFB (Distributed Feedback) Laser.
  • What are the operating temperature limits for this device?
    The operating temperature range is from 0° C to 70° C.
  • What is the signaling rate per lane for this device?
    The signaling rate for each lane is 25.78125 GBd +/- 100 ppm.
  • What cable type is compatible with this Ethernet device?
    The compatible cable type is Single Mode Fiber (SMF).
  • What is the Bit Error Ratio (BER) specification?
    The Bit Error Ratio (BER) is specified as 1E-12.
  • What are the transmitter and receiver types in this device?
    The transmitter type is a DFB Laser, and the receiver type is a PIN photodiode.
  • What is the range of wavelengths the transmitter operates within?
    The transmitter wavelengths range from 1294.53 nm to 1301.09 nm, divided into two ranges: 1294.53 nm to 1296.59 nm and 1299.02 nm to 1301.09 nm.
  • What are the storage temperature limits for this Ethernet device?
    The storage temperature ranges from -40° C to 85° C.

Product Review

The Juniper QSFP-100GBASE-LR4 module offers a maximum data rate of 103.125Gbps, supporting 100 Gigabit Ethernet over a distance of up to 10 km on single-mode fiber, which is suitable for long-range data transmission needs. However, its power consumption peaks at 3.5W, which could be a consideration for environments aiming for energy efficiency. Additionally, the module operates within a broad temperature range from 0° C to 70° C, ensuring reliability across various operating conditions.


The Juniper QSFP-100GBASE-LR4 is a high-performance 100 Gigabit Ethernet transceiver designed for long-range optical communication over single-mode fiber (SMF). It utilizes a duplex LC connector for physical interfacing, ensuring compatibility with standard network equipment and fiber optic cabling. This transceiver supports a maximum data rate of 103.125 Gbps, achieved by aggregating four lanes, each operating at a signaling rate of 25.78125 GBd with a precision of +/- 100 ppm. The QSFP-100GBASE-LR4 employs Distributed Feedback (DFB) lasers for transmitting data. These lasers generate light in four wavelength ranges: 1294.53 nm to 1296.59 nm, and 1299.02 nm to 1301.09 nm. The output power of the transmitter for each lane varies between a minimum of -4.3 dBm and a maximum of 4.5 dBm. On the receiving end, the QSFP-100GBASE-LR4 features a PIN photodiode that can handle input power per lane from -10.6 dBm (minimum) to 4.5 dBm (maximum). The transceiver is designed for a core/cladding size of 9/125 µm, ensuring it is suitable for standard single-mode fiber optic cables. This transceiver is capable of maintaining a reliable connection over distances up to 10 kilometers, facilitated by its 4dB power budget. It operates efficiently within a wide temperature range, from 0° C to 70° C for operating conditions, and from -40° C to 85° C when stored. Power consumption is kept low, with a maximum rating of 3.5 W, which aids in minimizing operational costs and heat generation in data center environments.
  • Bit Error Ratio (BER) stands impressively at 1E-12, signifying a very high level of transmission accuracy and reliability.
  • It requires a +3.3V single power supply, simplifying power management within networking equipment.
  • The transceiver's compact QSFP form factor allows for high-density installations, making it an ideal choice for data centers and large enterprise networks.
In summary, the Juniper QSFP-100GBASE-LR4 transceiver combines advanced optical technology and energy efficiency to provide a reliable, high-speed connection for 100 Gigabit Ethernet networks. With its support for long distances, low power consumption, and operation within a wide range of temperatures, this transceiver is well-suited for a variety of networking applications, including in data centers and large campus environments. Its design and specifications ensure that it can meet the demands of high-performance computing and storage networks, making it a key component in modern network infrastructure.


Part Number Juniper QSFP-100GBASE-LR4
Manufacturer Juniper
Network Speed 100G Ethernet
Interface LC Duplex
Rate per Channel 25.78125 Gb/s +/- 100 ppm
Emission Wavelengths 1294.53 to 1296.59 nm, 1299.02 to 1301.09 nm
Lane Minimum Output Power -4.3 dBm
Lane Maximum Output Power 4.5 dBm
Minimum Receiver Sensitivity -10.6 dBm
Maximum Receiver Sensitivity 4.5 dBm
Fiber Core/Cladding Diameter 9/125 µm
Maximum Reach 10 km
Power Usage 3.5 Watts
Minimum Operating Temperature 0°C
Maximum Operating Temperature 70°C
Minimum Storage Temperature -40°C
Maximum Storage Temperature 85°C
Overall Data Rate 103.125 Gbps (4 x 25.78 Gbps)
Bit Error Rate 1E-12
Optical Power Budget 4 dB
Electrical Supply +3.3V DC
Emitter DFB Laser
Fiber Type Single Mode Fiber (SMF)
Detector PIN Diode

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