Compact shielded transformers for ultrasonic use are AEC-Q200-qualified

Compact transformers by Epcos, the B78302A series, have innovative E5 cores for ultrasonic applications. There are three types available with transformation ratios between 1:1:10.8 and 1:1:15.3. Depending on the type, the surface mount transformers offer inductance values between 2.0 and 4.0mH. They are suitable for frequencies from 50 to 300kHz. 

The compact AEC-Q200 qualified components have dimensions of only 8.1 x 7.0 x 7.0 mm and are shielded by a counter-winding for better interference suppression. The permissible temperature range is between -40 and +125 degrees C. 

The transformers are used in ultrasonic applications for impedance matching between the driver IC and the ultrasonic transmitter or receiver. Typical applications are parking aids, industrial robots, drones and logistics robots, automated guided vehicles (AGV) and systems for level measurement. 

TDK is based in Tokyo, Japan. It was established in 1935 to commercialise ferrite, a key material in electronic and magnetic products. TDK’s portfolio features passive components such as ceramic, aluminium electrolytic and film capacitors, as well as magnetics, high-frequency and piezo and protection devices. The product spectrum also includes sensors and sensor systems such as temperature and pressure, magnetic and MEMS sensors. In addition, TDK provides power supplies and energy devices and magnetic heads. 

These products are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda. TDK focuses on demanding markets in automotive, industrial and consumer electronics, and information and communication technology. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America. 

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