【Application Solution】SPE: Single-Pair Ethernet Solution

Voohu Electronics offers a complete Single-Pair Ethernet (SPE) solution. This design is the first to fully comply with IEEE 802.3 signaling requirements while meeting 1.5 kV isolated Ethernet security requirements.

This compact, high-performance SPE design, compliant with the IEC 62368-1 security isolation standard, is an ideal choice.

Solution Advantages:

· 1.5 kV isolation compliant with IEC 62368-1
· Simple and compact layout
· Signal stability up to 1000 meters supported
· 10BASE-T1 and 100BASE-T1


To help customers intuitively understand solution details and quickly match their needs, Voohu's official website (WWW.VOOHU.CN) has established a solutions section: Click on Industry Solutions -- Solutions -- SPE, where you can view complete solution documents (including topology diagrams, component selection lists, and performance parameter tables) for various scenarios, download technical manuals for various sub-fields, and obtain test data and optimization suggestions from solution implementation cases. Whether it's early solution planning, mid-term technology selection, or late-stage problem troubleshooting, the official website's reference resources can provide customers with precise support, helping to shorten design cycles and reduce development risks.

Traditional Ethernet vs. Single-Pair Ethernet
1. Miniaturization: Saves up to 75% of PCB space

Traditional Ethernet



Single-Pair Ethernet


2. Simplification: PCB Circuit Diagram Design

Traditional Ethernet



Single-Pair Ethernet



3. Lightweight: The cable diameter is smaller.



Traditional Ethernet: 4 pairs

Single-pair Ethernet: 1 pair, transmission distance up to 1000 meters, simple cabling

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Applications of SPE in Industrial Applications

Single Ethernet Pair Solution



TVS array: ESD protection up to 15 kV (IEC 61000-4-2)



Common-mode inductor: Noise attenuation

X'fmr autotransformer: Isolation voltage 1.5 kV (IEC 62368-1)



The entire interface solution complies with the IEEE 802.3cg/bw standard.

The single-pair Ethernet communication circuit, as a highly integrated mixed-signal system, cleverly combines high-speed data communication with a minimalist physical layer design within a single pair of twisted-pair cables.

The entire process, from signal access and integrity processing to protocol conversion, involves the coordination of multiple levels of sophisticated signal links, each facing unique design challenges in balancing space and performance.

Through the appropriate selection of core chips, meticulous PCB layout considering high-frequency losses and electromagnetic compatibility, and stringent signal protection strategies, a stable, reliable, compact, and fully compliant single-pair Ethernet communication device can be constructed, meeting the growing demands for lightweight cabling and high-bandwidth data communication in industrial control, automotive networks, and intelligent sensing fields.

Voohu's Value Promise – Choose Voohu, Truly Reliable
Voohu's systematic solutions go beyond just material matching; we empower our clients with three key values:

1. Customized Services: We provide customized hardware design and manufacturing services based on your specific needs. Whether it's a special application scenario or personalized functional requirements, we can meet them.
2. One-Stop Procurement: Clients can purchase all the hardware products they need from us, including RJ45 connectors, network transformers, ESD protection devices, and Ethernet port PHYs. One-stop procurement is not only convenient and fast but also reduces costs.
3. Technical Support: We provide comprehensive technical support, from hardware selection to circuit design, from testing and verification to manufacturing. Our technical support team consists of experienced engineers who can quickly respond to customer needs and solve their problems.

From its establishment in 2018 to its overseas expansion in 2025, Voohu Electronics has become a reliable partner for over 1000 companies thanks to its "superior quality, reasonable prices, attentive service, and reliable delivery."

If you're also looking for a reliable, cost-effective, and hassle-free supplier of communication electronic components, consider Voohu. After all, with over 100 listed companies as a partner, you can't go wrong.

Choosing Voohu – truly reliable – isn't just a slogan; it's the answer written with the trust of over 1000 customers over 8 years.