Datasheet

2004 Sep 01 2
Ferroxcube
Ferrite toroids TN10/6/4
RING CORES (TOROIDS)
Effective core parameters
Coating
The cores are coated with polyamide 11 (PA11), flame
retardant in accordance with
“UL 94V-2” ; UL file number
E 45228 (M). The colour is white.
Isolation voltage
DC isolation voltage: 1000 V.
Contacts are applied on the edge of the ring core, which is
also the critical point for the winding operation.
SYMBOL PARAMETER VALUE UNIT
Σ(I/A) core factor (C1) 3.07 mm
−1
V
e
effective volume 188 mm
3
I
e
effective length 24.1 mm
A
e
effective area 7.8 mm
2
m mass of core ≈ 0.95 g
Fig.1 TN10/6/4 ring core.
Dimensions in mm.
handbook, halfpage
;;
;;
;;
;;
CBW314
5.2 ±0.3
4.4
±0.3
coating PA11
(≈0.3)
10.6 ±0.3
Ring core data
GRADE
A
L
(nH)
µ
i
TYPE NUMBER
4C65 52 ± 25% ≈ 125 TN10/6/4-4C65
4A11 348 ± 25% ≈ 700
(1)
1. Old permeability specification maintained.
TN10/6/4-4A11
3D3 306 ± 25% ≈ 750 TN10/6/4-3D3
3R1
(2)
2. Due to the rectangular BH-loop of 3R1, inductance values strongly depend on the magnetic state of the ring core and measuring
conditions. Therefore no A
L
value is specified. For the application in magnetic amplifiers A
L
is not a critical parameter.
- ≈ 800 TN10/6/4-3R1
3F3 740 ± 25% ≈ 1800 TN10/6/4-3F3
3C90 940 ± 25% ≈ 2300 TN10/6/4-3C90
3C11 1750 ± 25% ≈ 4300 TN10/6/4-3C11
3E25 2250 ± 30% ≈ 5500 TN10/6/4-3E25
WARNING
Do not use 3R1 cores close to their mechanical resonant frequency. For more information refer to
“3R1” material
specification in this data handbook.