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Bourns Releases New Planar Transformers

Model PLR Series

Riverside, California – January 8, 2024Bourns Custom Magnetics Product Line is pleased to introduce the new Model PLR Series Planar Transformer Series. These new planar transformers are ideal for low profile, 25 watt PoE applications requiring a DC-DC transformer.

The new Model PLR Series Planar Transformers are surface mount forward converter transformers that provide 25 W power with a low maximum leakage inductance of 0.216 μH. Output voltages are 5 V at 5 A or 12 V at 2.1 A, and the withstand Hi-Pot rating is 1500 VDC. The operating temperature range is from -40 °C to +125 °C and the series is RoHS compliant*.

The Bourns® Model PLR Series is suitable to be used in various applications such as PoE applications, remote microcomputer powering applications, industrial power systems, Switched-Mode Power Supplies (SMPS), LED lighting, and other forward converter transformer applications.


  • Low leakage inductance from 0.216 μH max.

  • Low height profile

  • DC-DC transformer

  • Surface mount

  • Operating temperature: -40 °C to +125 °C

  • RoHS compliant*


  • Industrial power systems

  • Switched-Mode Power Supplies (SMPS)

  • LED lighting

  • Battery Management Systems (BMS)

  • Forward transformer for PoE applications

* RoHS Directive 2015/863, Mar 31, 2015 and Annex.

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