ETD
TDK (Epcos) produces 7 standard ETD core shapes. The advantages of ETD core shape using include the convenience of winding through a thick wire and copper tape, a large number of bobbins terminals providing modularity in the design of a multi-winding transformer, as well as the easy coils manufacturing. The standard product range of vertical and horizontal coil formers optimizes the location of the ETD-transformer on the PCB. A significant factor in favor of using these cores in new developments is also the widespread use of all cores sizes in products of power electronics, reducing delivery time and prices. A wide range of standard ETD ferrite cores with a gap provides an additional opportunity to optimize the applied cores for the estimated required value of a gap.
ETD-cores dimensions
| Standard Size |
A [mm] |
B [mm] |
D1 [mm] |
D2 [mm] |
h1 [mm] |
h2 [mm] |
|
|---|---|---|---|---|---|---|---|
| ETD 29 | 30,6-1,6 | 9,8-0,6 | 22,0+1,4 | 9,8-0,6 | 16,0-0,4 | 10,7+0,6 |
|
| ETD 34 | 34,0+1/-0,6 | 11,1-0,6 | 25,6+1,4 | 11,1-0,6 | 17,5-0,4 | 11,8+0,6 |
|
| ETD 39 | 38,9+1,1/-0,7 | 12,8-0,6 | 29,3+1,6 | 12,8-0,6 | 20,0-0,4 | 14,2+0,8 |
|
| ETD 44 | 43,8+1,2/-0,8 | 15,2-0,8 | 32,5+1,6 | 15,2-0,8 | 22,5-0,4 | 16,1+0,8 |
|
| ETD 49 | 48,5+1,3/-0.9 | 16,7-0,8 | 36,1+1,8 | 16,7-0,8 | 24,9-0,4 | 17,7+0,8 |
|
| ETD 54 | 54,5±1,3 | 19,3-0,8 | 40,1+2,2 | 19,3-0,8 | 27,8-0,4 | 19,8+0,8 |
|
| ETD 59 | 59,8±1,4 | 22,1-0,9 | 43,6+2,2 | 22,1-0,9 | 31,2-0,4 | 22,0+0,9 |
|
PDF data sheets on cores and acessories are available when following a link according to appropriate core shape.
Information for Ordering
These cores are supplied as single units.Ordering code is per piece, 2 pieces are required.
N87 ETD29/16/10 B66358G0000X187 (ungapped)
ETD 29/16/10 - core shape
B66358 — Part number
G — air gap (air gap dimensions are given in (μm). Not specified for ungapped cores
87 — material N87