HIGH FREQUENCY MAGNETICS
T1/E1 Single Through Hole Transformers
TM9913
•
•
Compatible with water-soluble flux, total-immersion
cleaning and machine insertion
•
•
Operate as pulse transformers at DS1 and CEPT rates
Perform impedance matching and voltage transformation
for line transceivers
Meets IEC-695, 2-2 flammability requirements
•
Qualified per Bellcore TR-TSY-000357-1
ELECTRICAL SPECIFICATIONS at 25° C
DCR
Ω
max
Turns Ratio
Interwinding
Breakdown
Voltage
± 2%
Primary
Inductance*
mH min
Leakage
Inductance
µH max
Interwinding
Capacitance
pFmax
Shielded
Version
Part Number
Vrms min
Pri : Sec
Pri
Sec
2745AJ2
2745G3
1 : 1.07 CT
1 : 1.14 CT
1 : 1.36 CT
1 CT : 2 CT
1.0
0.8
1.3
0.7
3.0
0.50
0.95
0.85
1.55
1.00
1.10
1.2
N/A
80
850
___
1.75
0.92
3.15
1000
1000
1000
2745AK2
2741H2
2741G2
2745CA2
2745AF2
20
3.15
23
* Measured at 10 kHz, 0.1 Vac
Receive
Transmit
Lucent IC
Part Number
Application
Bel Part Number
2745AF2
2745AF2
2745AF2
2745AF2
2745G3
Bel Part Number
2745CA2
2745G3
T7288
CEPT 75 / CEPT 120
DS1
T7289A
DS1
2745AJ2
2745CA2
2745G3
T7290A
T7630
T1 / CEPT 75 / CEPT 120
DS1
CEPT 75.1
2745AJ2
2745CA2
2745AJ2
2745CA2
2745G3
2745AJ2
2745CA2
2745AJ2
2745CA2
2745G3
CEPT 75.2 / CEPT 120
CEPT 75.1
T7688
T7689
CEPT 75.2 / CEPT 120
DS1
DS1
2745G3
2745G3
T7690
T7698
CEPT 75.1
2745AJ2
2745CA2
2745AJ2
2745CA2
CEPT 75.2 / CEPT 120
©1999 Bel Fuse Inc. Specifications subject to change without notice. 06.99
Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
T124
