ISDN MAGNETICS
UPO InterfaceTransformers
TM00208
•
•
Operates as a pulse transformer at 384 Kbps in ISDN U
interface applications
•
•
Primary winding can withstand 70mA of direct current
Minimum interwinding breakdown voltage of 1500 Vrms
Qualified per Bellcore TR-TSY-000357-1
ELECTRICAL SPECIFICATIONS at 25° C
DCR
Ω
max
Interwinding
Capacitance2
pF max
Primary
Leakage
Inductance2
µH max
Turns Ratio
Part Number
Inductance1
mH min
± 2%
With terminals
7 & 9 connected
Pri
3.6
2.7
Sec
3.4
6.1
2718BD2
2718BG2
1CT : 1.25
1CT : 2
2.5
2.1
15
60
60
11.5
1 Measured at 1 kHz, 0.1 Vac
2 Measured at 100 kHz, 0.01 Vac
SCHEMATIC
Compatible Transceiver ICs
10
Part Number
IC Mfr
IC Part Number
1
5
7
9
2718BD2
2718BG2
Siemens
Siemens
PEB2095
PEB2096
CT
6
Primary
Secondary
©2000 Bel Fuse Inc. Specifications subject to change without notice. 05.00
Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
T2-19
