Philips Components
Product speci鏗乧ation
Ferrite ring cores (toroids)
RING CORES (TOROIDS)
Effective core parameters
SYMBOL
危(I/A)
V
e
I
e
A
e
m
Coating
The cores are coated with polyamide 11 (PA11), flame
retardant in accordance with
鈥淯L 94V-2鈥?/div>
; UL file number
E 45228 (M).
Isolation voltage
DC isolation voltage: 2000 V.
Contacts are applied on the edge of the ring core, which is
also the critical point for the winding operation.
PARAMETER
core factor (C1)
effective volume
effective length
effective area
mass of core
VALUE
1.23
2944
60.2
48.9
鈮?5
UNIT
mm
鈭?
mm
3
mm
mm
2
g
handbook, halfpage
TN25/15/10
25.8
鹵0.7
(鈮?.3)
,,,,
,,,,
14.0
鹵0.6
coating PA11
CBW306
10.6
鹵0.5
Dimensions in mm.
Fig.1 TN25/15/10 ring core.
Ring core data
GRADE
3F3
3C90
3C11
3E25
3E5
(1)
3E6
(1)
Note
1. Ring cores in 3E5 and 3E6 are lacquered (polyurethane) and have different dimensions:
Outside diameter = 25.25
鹵0.7
mm; Inside diameter = 14.75
鹵0.6
mm; Height = 10.25
鹵0.5
mm; flame retardant in
accordance with
鈥淯L 94V-2鈥?/div>
; UL file number E 192048.
Properties of cores under power conditions
B (mT) at
GRADE
H = 250 A/m;
f = 25 kHz;
T = 100
擄C
鈮?20
鈮?20
f = 25 kHz;
藛
B = 200 mT;
T = 100
擄C
鈮?.33
鈭?/div>
CORE LOSS (W) at
f = 100 kHz;
藛
B = 100 mT;
T = 100
擄C
鈮?.33
鈮?.32
f = 400 kHz;
藛
B = 50 mT;
T = 100
擄C
鈭?/div>
鈮?.56
A
L
(nH)
1840
鹵25%
2350
鹵25%
4400
鹵25%
5620
鹵25%
8680
鹵30%
10200
鹵30%
碌
i
鈮?800
鈮?300
鈮?300
鈮?500
鈮?500
鈮?0000
COLOUR CODE
blue
ultramarine
white
orange
yellow/white
purple/white
TYPE NUMBER
TN25/15/10-3F3
TN25/15/10-3C90
TN25/15/10-3C11
TN25/15/10-3E25
TL25/15/10-3E5
TL25/15/10-3E6
3C90
3F3
1999 Dec 23
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