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header-product Copper SFP Transceiver LevelOne 1.25Gbps 100m RJ45
53.99 €

Copper SFP Transceiver LevelOne 1.25Gbps 100m RJ45

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Copper SFP Transceiver LevelOne 1.25Gbps 100m RJ45

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Short description

The LevelOne 1.25Gbps Copper SFP Transceiver provides a reliable data transfer rate of 1250 Mbit/s over a distance of up to 100 meters. Designed for SFP interfaces, it operates at an input voltage of 3.3 V and supports a maximum current of 0.375 A. With CE and FCC certifications, this transceiver ensures compliance with international standards. Compact dimensions of 57 mm x 12 mm x 13.7 mm make it easy to integrate into various networking setups.
Available at price 53.99 €: 43 pcs.
Total available for order: 86 pcs.
Warranty: 2 Years
SKU: 431078
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
05.10.2026 {{selectedOffer.officeDeliveryString}}
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08.10.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.02 kg)
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Product information

Description

The LevelOne Copper SFP Transceiver (model SFP-3841) converts a 1000BASE-X optical Ethernet port to a 1000BASE-T copper RJ-45 port, enabling up to 1.25 Gbps data transfer over unshielded twisted-pair Category 5 cable for distances up to 100 meters. It is designed for SFP interfaces and has compact dimensions (57 mm x 12 mm x 13.7 mm), an input voltage of 3.3 V and typical power dissipation of about 1.05 W. The module is CE and FCC certified and intended for integration into networking equipment that accepts SFP transceivers.

Advantages

The transceiver supports bi-directional data links up to 1.25 Gbps and is hot-pluggable in an SFP footprint for easy replacement or upgrades. Its fully metallic enclosure reduces electromagnetic interference and the extended operating case temperature range (0 °C to +70 °C) improves reliability in a variety of environments. The compact RJ-45 connector assembly and access to the physical layer IC via a 2-wire serial bus simplify installation and monitoring. Low typical power consumption (1.05 W) minimizes thermal load on the host device.

Suitable for

  • Converting SFP optical ports to copper Ethernet (1000BASE-T)
  • Enterprise and data center switches, routers, and media converters with SFP slots
  • Short-reach copper links up to 100 m using Cat5/5e/6 UTP cable

Key specifications

  • Model: SFP-3841 (LevelOne)
  • Interface type: SFP with RJ-45 1000BASE-T
  • Maximum data transfer rate: 1250 Mbit/s (1.25 Gbps)
  • Range: up to 100 meters over UTP Category 5 cable
  • Operating case temperature: 0 °C to +70 °C
  • Power consumption: typical 1.05 W
  • Input voltage: 3.3 V
  • Dimensions: 57 mm x 12 mm x 13.7 mm
  • Certifications: CE, FCC

How to use

Insert the LevelOne Copper SFP transceiver into an available SFP slot on the host device while the host is powered according to the equipment manual (the module is hot-pluggable). Connect a Cat5/5e/6 unshielded twisted-pair cable to the RJ-45 connector and to the remote Ethernet device. Ensure the host system supports 1000BASE-T operation over an SFP interface or SERDES as required. Use the host device or management software to verify link negotiation and speed; access to the physical layer IC via the 2-wire serial bus enables additional monitoring if supported by the host.

Usage recommendations

Use Category 5 or better UTP cable for runs up to 100 m, maintain proper cable management to avoid excessive bend radius and interference, and verify compatibility with the host SFP slot and firmware. Do not expose the module to conditions outside the specified operating temperature range.

Specifications

Interface type:
SFP
Maximum data transfer rate: The maximum speed with which data can be transmitted from one device to another.
1250 Mbit/s
SFP transceiver type:
Copper
All features

Logistics data

Country of origin: Country where the device is made. Aka Country of manufacture (COM).
China
Harmonized System (HS) code:
85369010

Packaging data

Package weight: Weight of the packaged product.
35 g
Package height: The distance from the top to the bottom of the packaging.
65 mm
Package depth: The distance from the front to the back of the packaging.
20 mm
Package width: The distance from one side of the packaging to the other.
106 mm

Weight & dimensions

Weight: Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
0.02 kg
Height: The measurement of the product from head to foot or from base to top.
13.7 mm
Depth: The distance from the front to the back of something.
12 mm
Width: The measurement or extent of something from side to side.
57 mm

Operational conditions

Operating relative humidity (H-H):
5 - 95
Storage temperature (T-T): The minimum and maximum temperatures at which the product can be safely stored.
-40 - 85
Operating temperature (T-T): The minimum and maximum temperatures at which the product can be safely operated.
0 - 70

Sustainability

Sustainability certificates:
RoHS

Certificates

Certification:
CE, FCC

Power

Maximum current: The greatest possible amount of current, which is a quantity representing the rate of flow of electric charge.
0.375 A
Maximum voltage:
4 V
Input voltage: The voltage (V) which is required to power the product.
3.3

Features

Hot-swap:
Yes
Hot-Plug support: Device has hot-plug capability, which means that user can replace system components without shutting down the system.
Yes

Performance

Ethernet LAN (RJ-45) ports: Number of Ethernet LAN (RJ-45) ports (connecting interfaces) in the device. Ethernet LAN (RJ-45) ports allow a computer to connect to the ethernet.
1
Networking standards: The way in which the network is working, e.g. IEEE 802.11a, IEEE 802.11b, IEEE 802.11g.
IEEE 802.3ab, IEEE 802.3
Maximum transfer distance: The greatest distance over which the data/signal can be transferred.
100 m
Interface type:
SFP
Maximum data transfer rate: The maximum speed with which data can be transmitted from one device to another.
1250 Mbit/s
SFP transceiver type:
Copper

Description

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Stock data
Warehouse Stock Delivery to the store Store Price
WH94 43 05.10.2026 Best delivery
53.99 € Best price
WH357 43 05.10.2026 Best delivery
74.99 €
53.99 €
Stock: 43
Delivery Date: 05.10.2026 Best delivery
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Customer reviews

Customer questions

FAQ

How much does the Copper SFP Transceiver LevelOne 1.25Gbps 100m RJ45 cost, and is it available for purchase?

The price is 53.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 86 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 05.10.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All LEVELONE products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized LEVELONE service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: interface type, maximum data transfer rate, sfp transceiver type, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.