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CSB Series High/Low Frequency Current Sense Transformer


CSB Series High/Low Frequency Current Sense Transformer in PCB through-hole mount (THT) plug-in design with primary and secondary windings that are PC integrated, eliminating need for the customer to install primary winding separately as is usually required in toroidal designs. Low cost compact package design, featuring varnish impregnated to reduce audible noise. Plastic bobbin meets the UL 94 flammability requirement. Custom sizes and values may be engineered for your specific application.


Operating Temp-40°C to +125°C
Carry Current20A


Low frequency, high frequency, over-current sensing, isolated-current indicators, load variation sensing, proportional current feedback

Series Data Sheet (PDF)

Technical Papers

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Brochures & Catalogs



Aerospace Planar Transformer for Switch-Mode Power Supplies

In this Planar Transformer mini case study, we discuss how we partnered with an aerospace customer, delivering a coupled hybrid aerospace solution that integrated a standard planar transformer with an inductor. We solved the customer's challenge of decreasing unit costs while saving design space and improving overall performance with the added benefit of reducing electromagnetic interference (EMI).

A planar transformer, the primary component used in switch-mode power supplies, offers volumetric efficiency and a lower profile over traditional wire-wound transformers because it uses printed circuit boards (PCB) for its turns.

To find out more about how we partner, solve, and deliver solution-based engineering for power magnetics customers, visit our website at

Standex Electronics is a global leader in the design, development, and manufacturing of standard and custom planar transformer solutions.

Standex Electronics at AHR Expo 2013

Alex Vinnage talks about what attendees can expect from Standex Electronics at the 2013 AHR Expo.


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