2779L [BEL]
HIGH FREQUECY MAGNETICS T1/E1 Surface Mount Transformers; 高FREQUECY MAGNETICS T1 / E1表面贴装变压器
| 型号： | 2779L |
| 厂家： | 
BEL FUSE INC. |
| 描述： | HIGH FREQUECY MAGNETICS T1/E1 Surface Mount Transformers |
| 文件： | 总2页 (文件大小：59K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HIGH FREQUECY MAGNETICS
T1/E1 Surface Mount Transformers
TM00138
•
•
•
•
Operates at the T1 rate of 1.544 Mbits/s and at the
E1 rate of 2.048 Mbits/s
•
•
•
Operating temperature range: -40° C to +85° C
Meets IEC 695, 2-2 flammability requirements
Designed for transmit and receive line interface
applications
PWB Process Capability: standard printed wiring board
assembly techniques, total-immersion cleaning
Low capacitance design with specific interwinding
insulation (2779L)
•
Reliability testing: Shock, vibration, temperature cycling,
temperature - humidity - bias
1500 Volt isolation
ELECTRICAL SPECIFICATIONS AT 25° C
DCR
Nominal
Inductance2
Turns Ratio
mH min
Leakage
Interwinding
Minimum
Interwinding
Breakdown
Voltage
Inductance3 Capacitance1
Ω
max
±2%
µH max
(4-1)1
1.3
pF
(4-1) & (5-8)1
20 typ
Part Number
(4-1):(5-8)1
1 : 1.14 CT
1 : 1.14 CT
(4-1)
1.80
1.25
(4-1)
1.2
(5-8)1
1.4
Vrms
2779G
1500
1500
2779L
0.9
0.5
1.8
10 max
1. connect 6 to 7
2. measured at 10 kHz, 0.1 Vac
3. measured at 100 kHz
SCHEMATIC
2779G
2779L
4
5
7
6
CT
1
8
1 : N
©2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00
Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
T1-85
HIGH FREQUECY MAGNETICS
T1/E1 Surface Mount Transformers
TM00138
MECHANICAL
2779G
2779L
8
7
6
5
8
1
7
2
6
3
5
4
0.256 (6.50)
0.160 (4.06)
TERMINAL 1 IDENTIFIER
3
1
2
4
0.350
(8.89)
MAX
0.050 (1.27)
0.100 (2.54)
0.004
8 EDGES
0.100
3
1
2
4
0.490
(12.45)
MAX
0.430
(10.92)
MAX
0.500
(12.7)
MAX
Unless otherwise specified, dimensions are nominal and in inches (millimeters).
©2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00
CORPORATE
FAR EAST
EUROPE
Bel Fuse Inc.
Bel Fuse Ltd.
Bel Fuse Europe Ltd.
198 Van Vorst Street
Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
8F / 8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel 852-2328-5515
Fax 852-2352-3706
www.belfuse.com
PrestonTechnology Management Centre
Marsh Lane, Suite G7, Preston
Lancashire, PR1 8UD, U.K.
Tel 44-1772-556601
Fax 44-1772-888366
www.belfuse.com
T1-86
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