EFD Cores

EFD (Economical Flat Design) cores were developed to meet the increasing demand for low profile components in power transformer design. A combination of very low height and excellent throughput power, when compared to other cores of a similar height, make these cores ideal where space considerations are a priority. EFD Cores are available in a range of sizes and materials as per IEC 62317-14 together with their associated coil formers and clips.

Materials - Manganese Zinc Materials - Nickel Zinc EFD Cores Table

Dimensional details & AL Values with Tolerance Code

Part No.	Core	A	B	C	D	E	F	G	le mm	Ae mm²	Ve mm³	F44	F47	F48
32-720-	EFD15x8x5	15₊_0.4	7.5^+0.15	4.65₊_0.15	11₊_0.35	5.55₊_0.2	2.4₊_0.1	5.3₊_0.15	34	15	510	675R	650R	780R
32-740-	EFD20x10x7	20₊_0.55	10₊_0.15	6.65₊_0.15	15.4₊_0.5	7.75₊_0.2	3.6₊_0.15	8.9₊_0.2	47	31	1460	1120R	1075R	1200R
32-760-	EFD25x13x9	25₊_0.65	12.5₊_0.15	9.1₊_0.2	18.7₊_0.6	9.3₊_0.25	5.2₊_0.15	11.4₊_0.2	57	58	3300	1790R	1720R	2200R