Dorelink
Dorelink
High-reliability components for PoE+, 10G Base-T, and Industrial Networking
Navigating the complexity of high-frequency magnetic components in the AI & 5G Era
As a premier LAN Transformer Supplier & Exporter, Dorelink Optical Communications understands that the modern Ethernet landscape is undergoing a paradigm shift. In the era of hyper-scale data centers and Edge Computing, the humble LAN transformer has evolved from a simple isolation component into a sophisticated signal integrity module essential for Galvanic Isolation, Common Mode Noise Suppression, and Impedance Matching.
The demand for bandwidth is insatiable. While 1000 Base-T remains the standard for enterprise desktops, we are seeing a massive transition toward 2.5G, 5G, and 10G Base-T applications in WiFi 6/7 access points and industrial automation. As an experienced exporter, we have observed that current technical routes are focusing on reducing the footprint of SMD (Surface Mount Device) packages while maintaining high PoE (Power over Ethernet) capabilities, often reaching up to 90W (802.3bt) to support high-power PTZ cameras and thin clients.
Procurement officers in North America and Europe are no longer just looking for the lowest price. They are prioritizing Supply Chain Resilience and Compliance. With 12 years of industry experience, Dorelink bridges the gap by offering components that are pin-to-pin compatible with Tier-1 brands but with shorter lead times and localized technical support. Global buyers are increasingly seeking "Discrete Magnetics" to allow for more flexible PCB layouts compared to integrated RJ45 connectors.
Providing end-to-end solutions for Smart Cities and IIoT (Industrial Internet of Things). Our transformers are designed to withstand extreme temperatures (-40°C to +85°C) and high EMI environments.
Strict adherence to RoHS, REACH, and UL standards. We provide comprehensive documentation for global customs and regulatory bodies, ensuring seamless entry into major markets.
Investing in 25G/40G Base-T magnetics and specialized transformers for Automotive Ethernet (100Base-T1/1000Base-T1) to support the autonomous driving revolution.
Expertise rooted in 12 years of optical and magnetic engineering
Dorelink Optical Communications Co., Ltd., established in 2016, is not just a trader; we are a powerhouse manufacturer. Our 18,500㎡ facility is the heart of our operations, where 45 professional quality control personnel manage a rigorous multi-stage inspection process:
Why do Ethernet ports require transformers? Unlike other interfaces, Ethernet is designed to span long distances (up to 100 meters). This creates a risk of ground loops and high-voltage transients. The LAN transformer provides 1500Vrms isolation, protecting sensitive PHY silicon from damage. Furthermore, our transformers utilize high-performance Ferrite Cores to provide high common-mode impedance, which is critical for passing FCC Part 15 and EN55022 EMC requirements.
For PoE applications, the transformer must handle DC bias current without saturating the core. Our PoE+ and PoE++ modules are engineered with specialized winding techniques to ensure balanced current distribution, preventing signal distortion even under maximum load conditions.
Supporting rapid prototyping and mass production with global logistics
Expert insights into Ethernet transformer selection and procurement
A LAN transformer is a "discrete" component soldered onto the PCB, allowing for custom layout and smaller vertical profiles. Integrated RJ45 connectors (MagJack) combine the transformer and the connector, saving PCB space but offering less flexibility in EMI shielding design.
Yes, Dorelink specializes in providing pin-compatible, drop-in replacements for industry-standard parts like the H6062NL or TG1G-S012NZRL. We provide cross-reference sheets to ensure electrical and mechanical equivalence.
Absolutely. Our high-current magnetic series is designed to handle up to 1A per pair, supporting the latest 90W PoE standards required for smart lighting and high-end security systems.
We use high-grade materials and perform 100% automated testing. Our industrial-grade modules are rated for extended temperature ranges and undergo rigorous vibration and thermal cycling tests.
For stocked items like 1000 Base-T modules, we can ship within 3-5 days. For custom OEM/ODM designs, our R&D team can deliver samples in 2 weeks and mass production in 4-6 weeks.
