TDK Corporation has announces its two new EPCOS SMT current sense transformers for automotive electronics, the B78417A2185A003 and B78419A2251A003.
The first transformer is 10.6 mm x 12.2 mm x 11 mm and the second transformer is 12.8 mm x 13.6 mm x 14.4 mm. The first SMT has an EP7 ferrite core, can measure pulse currents up to 20 A, and has a DC resistance of 1.3 mΩ on the primary side and 3.7 Ω on the secondary side. The second SMT can measure pulse currents up to 30 A and has a DC resistance of 0.5 mΩ on the primary side and 2.7 Ω on the secondary side.
“The SMT current sense transformers are designed for use in emerging 48-V automotive power systems as well as for all xEV applications, where the components can be used to measure the currents of the electric drives,” according to the company. Both of these SMT current sense transformers can function in temperatures ranging from -40 to over 150 degrees Celsius and have a turn ratio of 1:100. The transformers also are qualified to AEC-Q200 and comply with the IEC 60664 standard.
