1. Enterprise Network Switch Modules Parts
  2. sku: 9357321089599611
  3. FINISAR FCLF-8520-3-SX

FINISAR FCLF-8520-3-SX Gb Sfp Transceiver 1.25 Gb/s 1000BASE-T 10/100/1000

Fclf-8520-3-sx Finisar 1.25 Gb/s Sfp Transceiver 1000base-t 10/100/1000

( Brand: Finisar ), ( Manufacturer Part Number: FCLF-8520-3-SX ), ( Part Type: Transceiver ), ( Network Ports: Sfp )

Review FINISAR 1.25 Gb/s Sfp Transceiver 1000base-t 10/100/1000

The Finisar FCLF-8520-3-SX 1.25 Gb/s SFP Transceiver is a high-performance, small form-factor pluggable (SFP) module designed for use in 1000BASE-T Ethernet networks. This transceiver supports both 10/100/1000 Mbps data transfer rates and full-duplex operation, making it a versatile solution for various network applications.

The compact size of the SFP transceiver makes it an excellent choice for space-constrained environments. Measuring just 23.3 mm x 22.1 mm x 6.4 mm, it can be easily integrated into a range of networking devices, from switches and routers to media converters and network interface cards.

The Finisar FCLF-8520-3-SX 1.25 Gb/s SFP Transceiver uses a LC connector interface and supports a data rate of 1.25 Gbps over four pairs of copper cabling, adhering to the IEEE 802.3ab 1000BASE-T standard. This means it can transmit and receive data over standard Category 5e or Category 6 UTP cabling, further increasing its flexibility and compatibility.

The transceiver features a highly reliable design, with a low power consumption of just 0.54 watts. It is also built with a rugged housing, ensuring robustness against temperature, humidity, and other environmental factors.

The Finisar FCLF-8520-3-SX 1.25 Gb/s SFP Transceiver is a plug-and-play device, meaning it requires no external drivers or setup procedures. It is fully compliant with industry standards and is RoHS and WEEE compliant, making it an eco-friendly choice for your network infrastructure.

In summary, the Finisar FCLF-8520-3-SX 1.25 Gb/s SFP Transceiver is a compact, high-performance, and versatile solution for integrating 1000BASE-T Ethernet connectivity into your networking devices. Its small form factor, support for various data transfer rates, and compatibility with standard copper cabling make it an ideal choice for a wide range of applications. With its robust design, low power consumption, and ease of use, this transceiver is a reliable and cost-effective investment for your network infrastructure.

The Finisar FCLF-8520-3-SX 1.25 Gb/s SFP Transceiver 1000BASE-T 10/100/1000 is a high-performance optical transceiver designed for use in Gigabit Ethernet networks. This transceiver provides 1000BASE-T compatibility, which allows it to support 10, 100, and 1000 Mbps data transfer rates over copper cabling, utilizing all four pairs of the RJ-45 cable. Let's discuss some pros and cons of purchasing this transceiver.

Pros:

1. High-speed data transfer: This transceiver supports 1000 Mbps data transfer rates, making it ideal for applications that require fast data transfer, such as video streaming, online gaming, and data backup.

2. Compatibility with various networks: This transceiver is compatible with various Ethernet networks, including 10BASE-T, 100BASE-TX, and 1000BASE-T, allowing it to be used in a variety of network configurations.

3. Durable design: Finisar transceivers are known for their robust design and high reliability. This particular transceiver is no exception, and it can withstand harsh operating conditions.

4. Energy efficiency: This transceiver complies with Energy Efficient Ethernet (IEEE 802.3az) standards, which can help reduce power consumption in the network.

Cons:

1. Cost: This transceiver may be more expensive than other 1000BASE-T transceivers due to its high-performance features.

2. Requires a power source: This transceiver requires a power source, as it is an active optical transceiver. This may add complexity to the cabling infrastructure and increase the cost.

3. Limited multicast support: This transceiver does not support multicast, which may limit its use in certain network configurations where multicast traffic is prevalent.

In conclusion, the Finisar FCLF-8520-3-SX 1.25 Gb/s SFP Transceiver 1000BASE-T 10/100/1000 is a high-performance, reliable, and durable optical transceiver suitable for applications that require fast data transfer rates. Its compatibility with various Ethernet networks and energy efficiency are additional advantages. However, its cost and the requirement for a power source may be drawbacks for some users. Ultimately, the decision to purchase this transceiver depends on the specific requirements of the network infrastructure and the budget allocated for the project.

Based on the information provided, if you are looking for a high-speed, reliable, and robust transceiver for your Gigabit Ethernet network, the Finisar FCLF-8520-3-SX 1.25 Gb/s SFP Transceiver 1000BASE-T 10/100/1000 is a solid choice, despite its higher cost and power requirements.

Details:

Listing is for 1 SFP.

part #: fclf85203 prices

  • $20.00-$42.57

specifications switchchunk:

  • brand: Finisar
  • mpn: Fclf-8520-3-sx
  • part type: Transceiver
  • network ports: Sfp

offer switchchunk:

  • sold: 0
  • availability: In Stock
  • options: Ship-to-home
  • started: January 22, 2026
  • quantity: 2

payments switchchunk:

  • wallet: Apple-pay
  • other
  • credit card: Discover

seller switchchunk:

  • # reviews: 1777
  • rating: 100.0%
  • city: Tallahassee, Florida

general switchchunk:

  • Enterprise Networking, Servers > Switches Hubs > Switch Modules
  • condition: Used

shipping switchchunk:

  • cost: $0.00
  • class: Standard
  • carrier: USPS
  • transit: 5-11 Days
  • service: USPS Ground Advantage
  • type: Calculated

returns switchchunk:

  • policy: No Returns
part type: transceiver, network ports: sfp,
category: computers > enterprise networking, servers > switches hubs > switch modules, sku: 9357321089599611,

Finisar FCLF-8520-3 Is Similar To:

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5 offers $20.00–$42.57 USD
  • Offer #1: $25.00 price + $9.66 shipping estimate = $34.66* total.+$9.66 shipping
  • Offer #2: $42.57 price + $12.90 shipping estimate = $55.47* total.+$12.90 shipping
  • Offer #3: $20.00 price + $22.54 shipping estimate = $42.54* total. Part Number: Lot of 2 each Finisar genuine and authentic 1000Base-T 1GB RJ-45 active copper SFP Transceivers.+$22.54 shipping
  • Offer #4: $14.51 price + $19.11 shipping estimate = $33.62* total.+$19.11 shipping
  • Offer #5: $13.99 price + $0.00 shipping estimate = $13.99* total. Access to physical layer IC via 2-wire serial bus. 1000BASE-T Copper SFP Transceiver.FREE SHIPPING

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