Finisar FCLF8521P2BTL network transceiver module Copper 1250 Mbit/s SFP
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FCLF8521P2BTL
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overview
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FCLF8521P2BTL Overview
FINISAR FCLF8521P2BTL 1000base-t 100m Gen2 Rj-45 Copper Sfp Optical Transceiver.
SFP, Copper, 1000BASE-T, 1.25Gb/s, RJ-45, Cat5
- SFP Copper 1250 Mbit/s
- Hot-Plug support
- Input voltage: 3.3 V
Summary Description
Finisar FCLF8521P2BTL. SFP transceiver type: Copper, Maximum data transfer rate: 1250 Mbit/s, Interface type: SFP. Input voltage: 3.3 V
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Specifications
Overview
| Condition | Refurbished |
|---|---|
| Brand | FINISAR |
| Stock | In Stock |
Performance
| SFP transceiver type | Copper |
|---|---|
| Maximum data transfer rate | 1250 Mbit/s |
| Interface type | SFP |
| Networking standards | IEEE 802.3 |
| Cabling technology | 1000BASE-T |
| Duplex system | Full |
Features
| Hot-Plug support | Y |
|---|
Power
| Input voltage | 3.3 V |
|---|
Operational conditions
| Operating temperature (T-T) | -40 - 85 °C |
|---|---|
| Storage temperature (T-T) | -40 - 85 °C |
Technical details
| Sustainability certificates | RoHS |
|---|
Frequently Asked Questions
What is the primary function of the Finisar FCLF8521P2BTL transceiver? +
The Finisar FCLF8521P2BTL is a high-performance copper Small Form-factor Pluggable (SFP) transceiver designed for 1000BASE-T Gigabit Ethernet applications. It allows you to connect standard RJ-45 copper cabling to fiber-optic switches or routers, providing a reliable and cost-effective interface for data transmission over Cat 5e or better twisted-pair copper cabling in enterprise networking environments.
Does the FCLF8521P2BTL support standard Cat 5e cabling? +
Yes, this transceiver is fully compliant with 1000BASE-T standards, meaning it is engineered to operate over Category 5e unshielded twisted-pair (UTP) copper cabling. To ensure optimal performance and maintain signal integrity, we recommend using high-quality Cat 5e or Cat 6 cabling for the full 100-meter reach supported by this module.
Can I use the Finisar FCLF8521P2BTL with multi-vendor network equipment? +
Finisar transceivers are generally built to strict MSA (Multi-Source Agreement) standards, ensuring compatibility across a wide range of industry-standard networking hardware. However, since some network switches require vendor-specific coding, it is essential to ensure your switch platform supports open-standard SFP modules or is configured to recognize third-party copper SFP devices.
What is the maximum reach for this copper SFP module? +
The FCLF8521P2BTL is designed to support link lengths of up to 100 meters over standard twisted-pair copper cabling. This makes it an ideal solution for short-to-medium distance connections within a server room, data center rack, or across an office floor, eliminating the need for expensive fiber-optic runs for localized equipment connectivity.
Does the FCLF8521P2BTL require external power or specific configuration? +
As a standard SFP module, this device is hot-pluggable, meaning it draws power directly from the SFP port on your switch or router. No external power supply is needed. Once inserted, the device is typically auto-detected by the host system, though some managed switches may require you to enable the port in the CLI to initiate the link.
Is the Finisar FCLF8521P2BTL suitable for 10/100 Mbps legacy networks? +
While this module is specifically optimized for 1000BASE-T Gigabit Ethernet speeds, its compatibility depends on the host hardware's capability to auto-negotiate lower speeds. Most modern switches that accept 1GbE SFP modules will support auto-negotiation, but you should verify your switch hardware documentation to confirm if the port can scale down to 10/100 Mbps when using this copper SFP.
How do I manage the status and diagnostics of this copper transceiver? +
The FCLF8521P2BTL supports industry-standard management interfaces provided by your network switch. You can typically monitor the link state, speed, and status through the switch’s management console, SNMP, or web-based UI. Since this is a passive-link conversion module, it provides real-time data back to the host switch to ensure constant visibility into your network connectivity.
What are the common deployment scenarios for this transceiver? +
This module is commonly deployed in enterprise environments to bridge the gap between fiber-based core switches and copper-based edge devices like VoIP phones, workstations, or wireless access points. By using these transceivers, network administrators can maximize the utility of their existing switch port density without needing to replace entire infrastructures with fiber-optic cabling.
How can I obtain a bulk quote for multiple Finisar FCLF8521P2BTL units? +
At BuyRouterSwitch.com, we specialize in supporting large-scale enterprise deployments. If you require a high volume of these transceivers for a data center expansion or corporate refresh, simply contact our sales team directly through our website. We are equipped to handle large RFQs and can provide competitive pricing structures tailored to your specific project needs.
Why should I choose BuyRouterSwitch.com for my networking hardware needs? +
BuyRouterSwitch.com is a trusted partner for IT procurement, providing access to a massive inventory of authentic, high-quality networking gear. We prioritize supply chain integrity, ensuring you receive the exact hardware you require for your mission-critical infrastructure. Our streamlined ordering process and dedicated support ensure that your enterprise networking projects remain on schedule and within budget.
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