Datasheet

2008 Sep 01 1630
Ferroxcube
Ferrite toroids TN13/7.5/5
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.
Maximum operating temperature is 160 °C.
Isolation voltage
DC isolation voltage: 1500 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) 2.46 mm
−1
V
e
effective volume 368 mm
3
I
e
effective length 30.1 mm
A
e
effective area 12.2 mm
2
m mass of core ≈ 1.8 g
Fig.1 TN13/7.5/5 ring core.
Dimensions in mm.
handbook, halfpage
;;
;;
;;
;;
CBW313
6.8 ±0.35
5.4
±0.3
coating PA11
(≈0.3)
13.0 ±0.35
Ring core data
GRADE
A
L
(nH)
µ
i
TYPE NUMBER
4C65 64 ± 25% ≈ 125 TN13/7.5/5-4C65
4A11 358 ± 25% ≈ 700
(1)
1. Old permeability specification maintained.
TN13/7.5/5-4A11
3F4 460 ± 25% ≈ 900 TN13/7.5/5-3F4
4A15 610 ± 25% ≈ 1200 TN13/7.5/5-4A15
3F3 900 ± 25% ≈ 1800 TN13/7.5/5-3F3
3C90 1170 ± 25% ≈ 2300 TN13/7.5/5-3C90
3C11 2200 ± 25% ≈ 4300 TN13/7.5/5-3C11
3E25 2810 ± 30% ≈ 5500 TN13/7.5/5-3E25
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.
−−TN13/7.5/5-3R1
WARNING
Do not use 3R1 cores close to their mechanical resonant frequency. For more information refer to “3R1” material specification in this
data handbook.