B78302A Series SMD Transformers for Ultrasonic Applications

TDK EPCOS' B78302A series compact transformers with innovative E5 cores for ultrasonic applications. They comprise three types with transformation ratios between 1:1:10.8 and 1:1:15.3. Depending on the type, these SMD transformers offer inductance values between 2 mH and 4 mH. They are suitable for frequencies from 50 kHz to 300 kHz. These AEC-Q200 qualified components have very compact dimensions of only 8.1 mm x 7.0 mm x 7.0 mm and are shielded by a counter-winding for better interference suppression. The permissible temperature range is between -40°C and +125°C.

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