B78302A2403A003

Switching Converter, SMPS Transformers Overview

The B78302A2403A003 is a surface-mount pulse drive transformer designed for ultrasonic applications. It utilizes an E5 magnetic core and features a compact footprint of 8.1 mm x 7.0 mm x 7.0 mm. The component provides an inductance value of 4 mH with a turns ratio of 1:1:15.3. It operates within a frequency range of 50 kHz to 300 kHz and supports an operating temperature range from -40°C to +125°C. The device includes reverse-wound shielding to enhance interference suppression capabilities.

Switching Converter, SMPS Transformers Feature Summary

• Reverse-wound shielding design for enhanced interference suppression
• Compact SMD form factor suitable for space-constrained layouts
• Optimized impedance matching between driver ICs and transducers

Switching Converter, SMPS Transformers Applications

• Parking assistance systems
• Industrial robotics
• Unmanned aerial vehicles (UAVs)
• Logistics robots and automated guided vehicles (AGVs)
• Liquid level measurement systems

Switching Converter, SMPS Transformers Procurement Notes

Verify the specific suffix A003 against official TDK Electronics documentation to confirm packaging details and reel specifications. Ensure the selected variant matches the required 4 mH inductance and 1:1:15.3 turns ratio for the intended ultrasonic application. Cross-reference the operating temperature range and frequency specifications with system requirements before finalizing procurement.

Switching Converter, SMPS Transformers Selection Notes

Select this component when high-frequency operation between 50 kHz and 300 kHz is required for ultrasonic transducer driving. The choice is driven by the need for precise impedance matching and superior electromagnetic interference rejection provided by the reverse-wound shielding. Consider the physical dimensions and thermal tolerance when integrating into dense PCB layouts or automotive-grade environments.

Switching Converter, SMPS Transformers Part Context

This part belongs to the B78302A series of SMD transformers manufactured by EPCOS, now operating as TDK Electronics. The series is specifically engineered for ultrasonic applications, offering various inductance values and turns ratios. These components are designed to bridge the gap between driver integrated circuits and ultrasonic emitters or receivers, ensuring efficient signal transmission.

Switching Converter, SMPS Transformers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing circuit designs if considering alternative models from the same manufacturer family.