QSFP-40G-LR4 Cisco Compatible 40G 10KM SMF QSFP Transceiver

Cisco
QSFP+
40G
Duplex
10 km
QSFP-40G-LR4 Cisco Compatible 40G 10KM SMF QSFP Transceiver

Cisco compatible QSFP-40G-LR4 - Key Features

  • Compatibility: Cisco
  • Media Type: Single-Mode Fiber (SMF)
  • Connector: Double LC/UPC
  • Fiber Count: Duplex
  • Maximum Distance: 10 km
  • Guaranteed Link Budget: 6.6 dB
  • Tx Wavelenght: CWDM 4 Ch
  • Supported Data Rate: 44.8 Gbps
  • DDM/DOM: Supported
  • Temperature Range: Standard 0°-70°C

Cisco QSFP-40G-LR4 Price

SKUSKU:40G-QSFP-10-CI
Lead timeIn Stock - Ships Next Business Day
Standard recommended retail price ex VAT:
85.14
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Telecoms & Integrators Globally

Cisco compatible QSFP-40G-LR4 Specifications

Form Factor
QSFP+
Modulation
NRZ (Non-Return to Zero)
Media Type
Single-Mode Fiber (SMF)
Connector
Double LC/UPC
Fiber Count
Duplex
Maximum Distance
10 km
Guaranteed Link Budget
6.6 dB
TX Wavelenght
4-channel CWDM (1271/1291/1311/1331 nm)
RX Wavelenght
4-channel CWDM (1271/1291/1311/1331 nm)
Supported Data Rate
44.8 Gbps
Supportet Ethernet Applications
40G Ethernet (41.25Gbps)
Optical Transport Network (OTN) Applications
OTU3 (43.01Gbps), OTU3e2 (44.58Gbps)
SDH/SONET Standards
STM-256 (39.81 Gbps)
DDM/DOM
Supported
Transmitter Type
DFB Laser
Tx Wave Bandwidth
4 WDM Seperated 1310nm Lanes (13 nm (1271, 1291, 1311, 1331))
Average Launch Power (Min) Each Lane
-6 dBm
Average Launch Power (Max) Each Lane
3 dBm
Receiver Type
PIN photodiode
Average Receiver Sensitivity (Min) Each Lane
-12.6 dBm
Average Receiver Sensitivity (Max) Each Lane
3 dBm
Receiver Overload
3 dBm
Temperature Range
Standard 0°-70°C
Storage Temperature
-40° to 85°C
Relative Humidity
5 to 85%
Power
+3.3V single power supply
Compliance
IEEE 802.3ba, CE, Class 1 FDA and IEC60825-1 Laser Safety Compliant, INF-8438i, QSFP+ MSA, RoHS, SFF-8436

Cisco compatible QSFP-40G-LR4 Datasheet

v2

Complete technical specifications and product details

Updated:Jan 16, 2026Format:PDF

Cisco compatible QSFP-40G-LR4 Description

Our Compatible QSFP-40G-LR4 Datasheet & Price is based on our product 40G-QSFP-10, which has the same specifications and is manufactured in accordance with the same industry standards. The Cisco QSFP-40G-LR4 datasheet compatible transceiver is intended for use with Double Fiber Single-Mode Fiber (SMF) optical cable. It has a minimum guaranteed optical budget of 9.7 dB, which is usually enough to reach up to 10 km distance as per 40GBASE-LR4 specification. However, distance is only an indicative parameter calculated for identification comfort. Finally, we calculate distance while keeping in mind the minimum optical budget and the average attenuation of optical cabling in industry. Our Cisco 40G QSFP datasheet compatible module version uses a high-quality 4x DFB Laser transmitter and 4x PIN photodiode receiver. DDM/DOM optical diagnostics are supported by this module, which provides diagnostic information about the current operating conditions. Digital diagnostics functions are available via a 2-wire serial interface, as specified in to QSFP 40GBASE-LR4 MSA. The compatible Cisco 40G QSFP compatibility matrix analogue module has a Double LC interface and operates in the standard 0°-70°C temperature range. This QSFP module supports data rates ranging from 39.81 – 44.8 Gbps data rate and such applications as 40G Ethernet (41.25Gbps), STM-256 (39.81 Gbps), OTU3 (43.01Gbps), OTU3e2 (44.58Gbps). Our Cisco QSFP-40G-LR4 datasheet compatible module is a multi-purpose module that can be used in a variety of networking applications. Consequently, most popular applications are Internet Service Provider, Fiber to The Home routing and switching equipment with QSFP-40G-LR4 datasheet compatible interfaces, Mobile Operator Core and Backhaul applications, Data Center networking for Ethernet connections and other optical fiber links. Our Compatible QSFP-40G-LR4 datasheet transceiver has proven to be reliable in temperature-controlled server rooms over a long period of time. Cisco 40G BIDI transceiver compatible transceivers do not require any maintenance while in use. The only possible maintenance requirement could occur during cable replacement, when the transceiver connector must be thoroughly cleaned of dust using special optical connector cleaning tools. Therefore, ensuring the best connection possible - leading to best performance! Our Compatible QSFP-40G-LR4 Datasheet and Price are based on our product 40G-QSFP-10, which is CE/RoHS certified and fulfills product safety standards. We perform compatibility tests for Cisco compatible QSFP 40G LR4 price and performance comply with the most recent Cisco networking equipment platforms, allowing us to encode transceiver EEPROM memory to be compatible with and work seamlessly with Cisco platforms. Furthermore, our optical transceivers comply with the QSFP+ Multi Source Agreement industry standard SFF-8431. Because we are committed to providing high-quality service, we conduct rigorous quality checks before delivering our products. As a result, we perform optical parameter measurements, connector cleanness tests, and EEPROM memory data validation tests on QSFP+ transceivers. Please contact us if you require any additional information Contact Us!

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