2718AF2 Datasheet, PDF (1/2 Pages) Bel Fuse Inc. – ADSL MAGNETICS Through Hole Transformers

ADSL MAGNETICS
Through Hole Transformers
TM9957
• 2718AF2 and 2718AH2 operate over the frequency
range from 1kHz to 1.1MHz
• 2718BK2 operates over the frequency range from
500Hz to 1.1MHz
• Designed for broadband applications
• Minimum interwinding breakdown voltage of 1500 Vrms
• Qualified per Bellcore TR-TSY-000357-1
ELECTRICAL SPECIFICATIONS at 25° C
Part Number
Turns Ratio
± 3%
Pri : Sec
Primary
Inductance
mH min
DCR
Ω
max
Pri
Sec
Insertion Loss
dB typ
Frequency
Response
dB
1kHz
1MHz
Interwinding
Capacitance
pF max
2718AF2
1.0 : 1.0
25.5
2.80
2.30
0.20
0.50
0.50
7.0*
2718AH2
1.0 : 1.0
25.5
2.80
2.30
0.20
0.50
0.50
10.0
2718BK2
1.0 : 1.0
11.0
1.50
1.50
N/A
N/A
N/A
30
* Terminal 8 grounded
SCHEMATICS
2718AF2
S
1
4
2718AH2
1
4
2718BK2
1
10
10
7
10
7
2
5
2
5
3
8
2
9
9
Primary
6
8
Secondary
‘S’ denotes an
electrostatic shield.
9
Primary
6
Secondary
4
Primary
7
Secondary
©1999 Bel Fuse Inc. Specifications subject to change without notice. 06.99
Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
T514