TC3.9-3E28 Datasheet, PDF (2/3 Pages) Ferroxcube International Holding B.V. – Ferrite toroids

Ferroxcube
Ferrite toroids
TC3.9/1.8/2.5
RING CORES (TOROIDS)
Effective core parameters
SYMBOL
PARAMETER
Σ(I/A)
core factor (C1)
V_e
effective volume
I_e
effective length
A_e
effective area
m
mass of core
VALUE UNIT
3.11
mm^−1
21.1 mm³
8.1
mm
2.6
mm²
≈ 0.12 g
Coating
The cores are coated with parylene C, flame retardant in
accordance with “UL 94V-2”; UL file number E 194397.
The coating is transparent.
Maximum operating temperature is 90 °C.
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.
handbook, halfpage
3.94 ±0.15
1.78 ±0.15
(≈12 µm) coating PARYLENE 'C'
2.54
±0.15
CBW473
Dimensions (uncoated) in mm.
Fig.1 TC3.9/1.8/2.5 ring core.
Ring core data
GRADE
3E28
A_L
(nH)
2020 ± 30%
µ_i
≈ 4000
TYPE NUMBER
TC3.9/1.8/2.5-3E28
2008 Sep 01
1545