Finisar FCLF8521P2BTL network transceiver module Copper 1250 Mbit/s SFP

Name: Finisar FCLF8521P2BTL network transceiver module Copper 1250 Mbit/s SFP
Brand: FINISAR
SKU: FCLF8521P2BTL-VHBRSN
Price: 62.30 USD
Availability: InStock
Rating: 5 (8 reviews)

Mfr. Part #: FCLF8521P2BTL

Brand: Finisar

Condition: New

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FCLF8521P2BTL

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overview

specifications

faqs

reviews

overview

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

Specifications

Overview

Condition	New
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

faqs

Frequently Asked Questions

What are the primary performance characteristics of the Finisar FCLF8521P2BTL transceiver? +

The FCLF8521P2BTL is a high-performance copper SFP transceiver designed for 1000BASE-T Gigabit Ethernet applications. It supports data rates up to 1.25 Gbps over standard Category 5 twisted-pair copper cabling, making it an ideal choice for high-speed connectivity in enterprise switching environments where fiber cabling is not required.

Which networking equipment is compatible with the Finisar FCLF8521P2BTL module? +

This module is engineered for universal compatibility with standard SFP ports on Gigabit Ethernet switches, routers, and server NICs. It follows the SFP Multi-Source Agreement (MSA) standards, ensuring that it integrates seamlessly into existing multi-vendor network infrastructures without requiring proprietary hardware configurations.

Can the FCLF8521P2BTL be used for 10/100 Mbps network environments? +

While the transceiver is specifically optimized for 1000BASE-T Gigabit Ethernet performance, its flexibility allows it to adapt to various link speeds depending on the host switch's capabilities. It provides reliable full-duplex transmission and is best utilized in environments where Gigabit throughput is required for backhaul or distribution layer connectivity.

What is the maximum reach for the Finisar FCLF8521P2BTL over copper cabling? +

The FCLF8521P2BTL supports link lengths of up to 100 meters when utilizing Category 5 or higher twisted-pair copper cabling. This range is sufficient for most in-rack or inter-switch connections within data centers and enterprise wiring closets, providing a robust, cost-effective alternative to optical transceivers for short-distance runs.

How does the FCLF8521P2BTL handle power consumption compared to fiber SFP modules? +

Copper SFP modules like the FCLF8521P2BTL generally consume more power than optical equivalents because they require integrated PHY components to drive the copper interface. It is important to ensure your switch’s power budget can accommodate the added consumption of copper transceivers, particularly when deploying high densities of these modules in a single chassis.

Does the FCLF8521P2BTL require specific software configuration or licensing? +

This transceiver is a plug-and-play device that does not require proprietary software licenses or complex configuration steps. Once inserted into a standard SFP slot, the host networking device will typically auto-detect the module. Any necessary port settings, such as speed or duplex mode, are managed directly through the host switch’s command-line interface.

Is the FCLF8521P2BTL suitable for industrial or extreme temperature environments? +

The FCLF8521P2BTL is designed to operate within standard enterprise temperature ranges. It is perfectly suited for climate-controlled data centers, server rooms, and office environments. If your deployment requires operation in non-controlled environments with high humidity or extreme thermal fluctuations, we recommend reviewing the technical specifications to ensure they align with your specific environmental parameters.

How should I maintain the FCLF8521P2BTL to ensure long-term reliability? +

To maintain optimal performance, keep the transceiver contacts clean and ensure the RJ-45 copper cabling is properly shielded and seated. Periodically monitor the host switch logs for interface errors or link flapping, which can indicate cable degradation. Proper airflow around the module is also critical to prevent heat buildup and maintain the longevity of the transceiver’s internal components.

How can I obtain a bulk quote for multiple Finisar FCLF8521P2BTL units? +

If you are planning a large-scale network deployment and require volume pricing, our dedicated sales team at BuyRouterSwitch.com is ready to assist. Simply reach out to us with your quantity requirements, and we will provide a competitive bulk quote tailored to your project needs, ensuring you receive the best value for your infrastructure investment.

Why should I choose BuyRouterSwitch.com for my Finisar networking hardware? +

BuyRouterSwitch.com is a trusted source for high-quality networking gear, prioritizing the procurement of authentic, reliable components for enterprise clients. By choosing us, you benefit from our streamlined purchasing process and expertise in networking hardware. We focus on delivering exactly what your network needs to run efficiently, providing a secure and professional buying experience for every order.

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