3E65 Datasheet, PDF (5/8 Pages) Ferroxcube International Holding B.V. – Medium permeability High Curie Temperature High Saturation Flux Superior EMI ferrite material

Popular Sizes
Ferroxcube 3E65 is available in a wide variety of toroid sizes.
3E65
Description
Ae (mm2)
le (mm)
µ_eff
TC3.4/1.8/1.3-3E65
1.01
7.63
5200
TC5.8/3.1/3.2-3E65
4.28
13
5200
TC6.3/3.8/2.5-3E65
3.06
15.2
5200
TC9.5/4.8/3.2-3E65
7.26
20.7
5200
TX14/8/7-3E65
20.5
32.8
5200
TX16/12/8-3E65
15.9
43.4
5200
TX18/10/10-3E65
38.9
41.5
5200
TX20/10/7-3E65
33.6
43.6
5200
TX22/14/6.4-3E65
25.9
54.1
5200
TX25/15/10-3E65
48.9
60.2
5200
TX29/19/7.6-3E65
37.4
73.2
5200
TX31/19/13-3E65
75
75.4
5200
TX36/23/15-3E65
93.3
89.6
5200
TX42/26/18-3E65
134
103
5200
TX50/30/19-3E65
186
120
5200
TX63/38/25-3E65
297
152
5200
TX80/40/15-3E65
288
174
5200
TX102/66/15-3E65
265
255
5200
TX107/65/18-3E65
370
259
5200
TX140/106/25-3E65
419
381
5200
* Many other sizes available, please contact your local Ferroxcube sales office.
Mass (g)
0.035
0.31
0.23
0.7
3.3
3.5
8.1
7.7
6.5
15
13
28
40
55
100
220
240
325
456
800
AL (nH/T2)
870
2150
1300
2300
4100
2400
6100
5000
3100
5300
3300
6500
6800
8500
10000
13000
11000
6800
9300
7200
TC stands for Parylene coating and TX for Epoxy coating. Bare cores are available as well, then referenced as T.
Product dimensions are shown as TX [Outer Diameter / Inner / Height]-3E65.
Standard AL tolerance is ±20% for TX (Epoxy) and ±25% for TC (Parylene).
It is also possible to produce 3E65 in planar cores to be wound with PCB windings or clamped on bus bars.
Coating Properties
Toroidal cores are coated to prevent isolation failures due to the high voltages present on common
mode chokes.The coating material applied depends on the core size: small cores (less than 10 mm outer
diameter) are coated with Parylene, while the rest are coated with Epoxy.
Parylene is a conformal coating, vapor deposited polymer which provides 1000 Volts DC isolation voltage.
The coating thickness is 10 to 15 µm. Parylene meets RoHS directives, and is flame retardant according
to UL94 V-2. Maximum operating temperature in air is 120 deg C, but in oxygen free environments up to
260 deg C.
Epoxy is a spray coating material which provides 2000 Volts DC isolation voltage with a 0.10 to 0.15 mm
layer. Epoxy meets RoHS directives and is flame retardant according to UL94 V-0 class. The maximum
operating temperature is 200 deg C.This material is very well suited for winding with thick copper wire
due to its hardness.
5