Electronics Insight
18. February 2022
Reading time: 7 Min.

How Signal Transformers are Changing to Meet Consumer Demand

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Signal Transformers play an increasingly important role in our everyday lives. They serve a different purpose from conventional transformers but are just as important.

Conventional transformers are usually for isolation and power transfer. They are generally used to change voltage to either higher (boost) or lower (buck). Signal Transformers are for isolation and impedance matching. They usually have a 1:1 turns ration and there is no transformation of voltage/current.

Uses for Signal Transformers

Without signal transformers we would not be able to binge watch our favorite shows, video chat with a friend, or stream our favorite music as we are driving. Signal transformers are part of many of our day-to-day activities and can be used in:

  • Robots
  • Routers
  • Single Pair Ethernet (SPE)
  • Entertainment
  • Sensing/diagnostics
  • Engine data collection
  • Navigation
  • Comfort control in vehicles

Bigger Technology = Smaller Devices

The demand for easy access to entertainment and convenience technologies is constantly growing. This forces designers and engineers to create more convenient ways to transport these technologies. Many times, this means making smaller devices. This can create space restrictions on the PCB board.

The effect of smaller devices is innovating how the parts for those devices are made so they can also be downsized without losing effectiveness.

Würth Elektronik has worked to meet the demand for smaller parts by developing the Super Tiny Signal Transformer (STST). The WE-STST series of signal transformers was developed for applications where small component size and exceptional electronic parameters are crucial.

What sets WE-STST apart?

The Würth Elektronik Super Tiny Signal Transformers are manufactured completely by machine. Conventional transformers usually consist of toroidal ferrites in a plastic housing. Using machine manufacturing allows the dimensions to be remain very small (4.7 x 3.22 x 2.9) while offering an insulation voltage of 1500V at 1 minute.

Four WE-STST Versions Available to Fit your Application

  • 350 µH is suitable for LAN applications with data rates up to 1,000 Mbps.
  • 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 and as transformers for the new G.fast standard
  • 300 µH or
  • 2,000 µH are suitable for ultrasonic sensor applications with a transmission ratio of 1:4.5

If you think the WE-STST might be a great fit for your project visit our online catalog for more information and specs. Or watch our youtube video for more insights.

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