E13EMHV Series SMT Transformers

TDK Corporation presents the EPCOS E13EMHV series of compact SMT transformers with high dielectric strength for a wide range of DC/DC converter topologies. The isolation distances comply with IEC 60664-1 and 61558-2-16 standards, achieving a high working voltage of 1,000 V_DC. Transient overvoltages of up to 2,500 V_PEAK are permitted. The high dielectric strength between the primary and secondary sides is 3,000 V_AC (50 Hz, 60 seconds).

With dimensions of only 12.9 mm x 15.8 mm x 11.4 mm, the B78308*A003 series transformers save space. The requirements for clearance and creepage distances according to the IEC 60664-1 standard (Np/Ns: minimum 8.14 mm clearance and minimum 11.2 mm creepage) are met in this compact design thanks to the internal construction of the transformers.

Two types are available for DC/DC converters in flyback topology with turns ratios of 1:0.22:0.78 and 1:0.33:0.7. Three types are available for push-pull and half-bridge converters with turns ratios of 1:1.07 and 1:1:0.57:2.14. Their transformers are designed for a frequency range from 100 kHz to 500 kHz and have a very low coupling capacitance of only 2 pF. The permissible operating temperature range is between -40°C and +150°C. The components of EPCOS' transformer series are qualified to AEC-Q200 Rev. D.