TDK introduces SMT current transformers for automotive electronics

inductance

TDK has released two new EPCOS SMT current transformers for automotive electronics. One of them (B78417A2185A003) is based on an EP7 ferrite core measuring just 10.6 mm x 12.2 mm x 11 mm and is specifically designed to measure pulse currents up to 20 A. The DC resistance on the primary winding side is 1.3 mΩ and the secondary side is 3.7 Ω. The other (B78417A2185A003) is based on an EP10-containing ferrite core measuring 12.8 mm x 13.6 mm x 14.4 mm with a measurable pulse current of up to 30 A. The DC resistance on the primary side is 0.5 mΩ and the secondary side is 2.7 Ω.

Both transformers have a 1:100 turn ratio and are suitable for a wide temperature range of -40 to +150 °C. The test voltages on both the primary and secondary sides are 2800 V DC, and the creepage distance and spatial distance meet the basic insulation requirements specified in IEC 60664. Both new transformers meet the AEC-Q200 quality certification requirements.

SMT current transformers are designed for the emerging 48-V automotive powertrain and all xEV applications, and their components can be used to measure the current of electronic equipment.

main application

· Current measurement in 48-V automotive powertrain and all xEV applications

· Record the current of the electronic device

Main features and benefits

· Rated currents up to 20 A and 30 A, respectively

· Creepage distance and spatial distance meet the basic insulation requirements of IEC 60664

· Temperature range extended to -40 °C to +150 °C

· Meet AEC-Q200 quality certification requirements

Key data