Würth Elektronik Presents Improved Performance and Space Gained Filter Design

for Single-Pair Ethernet Interface

As a member of the SPE Industrial Partner Network initiative, Würth Elektronik promotes the use of Single Pair Ethernet in industrial applications. For safe use in industrial applications, Würth Elektronik has now published a circuit layout with transformers as galvanic isolation. The solution has an isolation of 1.5 kV/60 s and is therefore fully suitable for industrial applications, unlike previous circuits that use two 50 V capacitors as galvanic isolation.

Würth Elektronik has published the first industrial SPE circuit that is fully compatible with the IEEE-802.3-signal requirements and the requirement of a 1.5 kV safety insulation according to IEC 62368-1.

The filter solution is extremely compact and ensures signal stability of up to 40 m cable length for 100BASE-T1 or up to 1 000 m for 10BASE-T1. Würth Elektronik’s innovative approach: Instead of using capacitors, electrical isolation is achieved by means of a signal transformer.

Further information on the industrial use of Singe Pair Ethernet can be found on the Würth Elektronik homepage and in this webinar recording on the topic “Single Pair Ethernet – Filter Design“. All passive components used in the layout developed by Würth Elektronik are available from stock. Free samples can be requested.