New Signal Transformer Features Maximum Component Height of 2.9 mm

Press Release Summary:

  • Used up to 1000Base-T applications with at least 350 µH inductance
  • Enables dimensions to be kept small at only 4.7 × 3.22 × 2.9 mm and offers an insulation voltage of 1,500 V / 1 min
  • Available in 350 µH, 120 µH, 300 µH and 2,000 µH versions for different applications

Original Press Release:

Tiny Signal Transformers for LAN Interfaces

Waldenburg (Germany), 21 November 2019 — Würth Elektronik, a leading European manufacturer of electronic and electromechanical components, is expanding its extensive range of signal transformers. The new series of WE-STST Super Tiny Signal Transformers for LAN interfaces features a maximum component height of just 2.9 mm and can be used up to 1000Base-T applications with at least 350 µH inductance. 

The WE-STST series of signal transformers is ideally suited for all applications in which small component size and outstanding electronic parameters are paramount. In contrast to conventional transformers, which usually consist of toroidal ferrites in plastic housings, the Super Tiny Signal Transformers from Würth Elektronik are manufactured completely by machine. This enables the dimensions to be kept extremely small at only 4.7 × 3.22 × 2.9 mm and yet offers an insulation voltage of 1,500 V / 1 min.

Four versions for different applications

WE-STST is available in four versions for different applications. The first version with 350 µH is suitable for LAN applications with data rates up to 1,000 Mbps. The WE-STST with 120 µH features outstanding signal integrity at high frequencies and is therefore ideal for 10 Gigabit Ethernet applications or for the new Single Pair Ethernet with data rates up to 1,000 Mbps. Further versions with 300 µH or 2,000 µH are suitable for ultrasonic sensor applications and as transformers for the new standard with a transmission ratio of 1:4.5. 

All four WE-STST versions are now available from stock without a minimum order quantity. Samples may be requested.

About Würth Elektronik eiSos Group

Würth Elektronik eiSos Group is a manufacturer of electronic and electromechanical components for the electronics industry and a technology company that spearheads pioneering electronic solutions. The company currently employs 8,300 staff and generated sales of 848 million euros in 2018. Würth Elektronik eiSos is one of the largest European manufacturers of passive components and is active in 50 countries. Production sites in Europe, Asia and North America supply a growing number of customers worldwide.

The product range includes EMC components, inductors, transformers, RF components, varistors, capacitors, resistors, quartz crystals, oscillators, power modules, Wireless Power Transfer, LEDs, sensors, connectors, power supply elements, switches, push-buttons, connection technology, fuse holders and solutions for wireless data transmission.

The unrivaled service orientation of the company is characterized by the availability of all catalog components from stock without minimum order quantity, free samples and extensive support through technical sales staff and selection tools.

Through its technology partnership with the Audi Sport ABT Schaeffler Formula E Team and its support for the Formula Student racing series, the company demonstrates its innovative strength in eMobility (

Würth Elektronik eiSos is part of the Würth Group, the world market leader for assembly and fastening technology.

Würth Elektronik: more than you expect!

Further information at

Würth Elektronik eiSos GmbH & Co. KG
Sarah Hurst
Max-Eyth-Strasse 1, 74638 Waldenburg, Germany
Phone: +49 7942 945-5186

Press Agency
HighTech communications GmbH
Brigitte Basilio
Phone: +49 89 500778-20

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