High Frequency Transformers Ferrite Core Range

The selection of the ferrite core type for a specific transformer depends on the design parameters and the designers personal preferences. The indicative power capacity for different core types (chart below) provides a general guideline for an initial core selection. We hold UL insulation system for Class B(130),F(155),H(180). We can make customized lamination transformers.

Power Capacity Chart

Power range (W)

Core type using N67* grade material

<5

RM4; P11/7; EF12.6; U10

5-10

E(F)16; RM5; P14/8

10-20

RM6; E(F)20; P18; U15; EFD15

20-50

RM8; P22; RM10 ETD29; E25; EFD20

50-100

ETD29; ETD34; RM12; P30; EFD25

100-200

ETD34; ETD39; ETD44; P36; E30; E42; EFD30

200-500

ETD44; ETD49; E55

>500

ETD54; ETD59; E65