High Frequency Transformers
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High Frequency Transformers

Frequency range: up to 600kHz
Mountings: Surface mount, Thru-hole & Leads
Power Rating: 1VA to 20kVA
Input/Output Voltages: 1V to 10kV

 

 

 

High Frequency Transformer Ferrite Core Selection Guide

The selection of the ferrite core type for a specific transformer depends on the design parameters and the designer*s personal preferences. The indicative power capacity for different core types (chart below) provides a general guideline for an initial core selection.

Power Capacity by Core Type

Power range (W)

Core type using N87* 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

Note:The power capacity of each core type varies due to differences in topology, operating frequency and temperature, flux density, and material grade.
* EPCOS material grade

Ferrite Core nominal dimensions & footprints

E cores and accessories clickhere3 Range: E5 每E70
EFD cores and accessories clickhere3 Range: EFD10 每EFD30
EP cores and accessories clickhere3 Range: EP7 每 EP20
ER cores and accessories clickhere3 Range: E9.5 每ER54
ETD cores and accessories clickhere3 Range: ETD29 每ETD59
P cores and accessories clickhere3 Range: P 5.8 每 P48
PQ cores and accessories Range: PQ20 每 PQ35
RM cores and accessories clickhere3 Range: RM4 每 RM14

Note: Dimensions & footprints above correspond to EPCOS product. Other manutacturer's dimensions can vary.


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