2795L [BEL]
HIGH FREQUENCY MAGNETICS T1/E1 Miniature Surface Mount Tranformers; 高频磁性元件T1 / E1微型表面贴装Tranformers
| 型号： | 2795L |
| 厂家： | 
BEL FUSE INC. |
| 描述： | HIGH FREQUENCY MAGNETICS T1/E1 Miniature Surface Mount Tranformers |
| 文件： | 总2页 (文件大小：43K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HIGH FREQUENCY MAGNETICS
T1/E1 Miniature Surface Mount Tranformers
TM00143
•
•
•
•
Meet pulse template and return loss requirements of T1/
E1 interface circuits
•
•
•
Operating temperature range: -40° C to +85° C
Meets IEC 695, 2-2 flammability requirements
Designed to meet stringent requirements of low-voltage
applications
PWB Process Capability: standard printed wiring board
assembly techniques, total-immersion cleaning
Maximum inductance unbalance of center-tapped
windings is 0.2%
•
Reliability testing: shock, vibration, temperature cycling,
temperature - humidity - bias
Minimum interwinding breakdown voltage of 1500 Vrms
ELECTRICAL SPECIFICATIONS at 25° C
Surge Voltage Capability3
DCR
Turns Ratio
Ω
max
Primary
± 1%
Leakage
Interwinding
Capacitance
pF typ
Part Number
Inductance1
mH min
Inductance2
µH max
Metallic
V peak
Longitudinal
V peak
Pri : Sec
(4 - 6)
(3 - 1)
2795K
2795H
2795L
2795J
1 : 1.93CT
0.810
1.34
0.4
0.5
0.6
0.4
1.2
2.3
35
45
47
45
3000
2500
2500
2500
2500
2500
2500
2500
1 : 2CT
1 : 2.1CT
1 : 2.45CT
1.8
1.8
1.5
3.7
3.8
3.7
1.1
0.950
1. measured at 10 kHz, 0.5 Vac
2. measured at 100 kHz, 0.1 Vac
3. See Supplementary Information
4. measured at 10 kHz, 0.1 Vac
SCHEMATIC
Minimum Return Loss for 2795J and 2795K
used with Lucent 3.3 volt transceivers
2795H
2795J
2795K
2795L
Frequency
Interface
4
3
51 kHz
14 dB
9 dB
102 kHz
20 dB
2 MHz
20 dB
15 dB
3 MHz
2 CT
1
Receive
16 dB
11 dB
6
Transmit1
15 dB
Secondary
Primary
1. For transmit, only, place external capacitor of 470 pF ± 10% across winding (4-6)
©2000 Bel Fuse Inc. Specifications subject to change without notice. 04.00
Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
T1-95
HIGH FREQUENCY MAGNETICS
T1/E1 Miniature Surface Mount Tranformers
TM00143
MECHANICAL
2795H
2795J
2795K
2795L
0.240
[6.10]max
6
5
4
A
0.186
[4.72]
0.350
[8.90]
max
0.265
[6.73]
ref
0.073 [1.85]
0.065
[1.65]
0.040 [1.02]
0.057
[1.45]
A
Terminal 1 ID
0.020[0.51]
0.364
[9.25]
0.234
[5.95]
No metallization
or solder mask
in cross-hatched
designated area
1
2
3
0.073 [1.85]
0.033 [0.84]
0.265
[6.73]
max
Suggested PCB Pad Layout
0.055
[1.40]
Note: Unless otherwise specified, dimensions
are nominal and in inches [millimeters].
0˚/8˚
0.015 [0.40]
R0.023 [0.60]
Supplementary Information
Safety Agency Compatibility
Surge Voltage Capability
Flammability Compliance
Simulation Model
Underwriters Laboratories, Inc. UL 1950
10/700 µs; 10 repetitions of alternating polarity, generator output: peak voltage, 25 Ω source
IEC-695, 2-2 (needle flame test), materials are UL 94 VO approved
SPICE computer simulation file available on request
Tape and Reel; 16 mm wide by 12 mm pitch; 13 inch OD; 4 inch ID
650 transformers per reel, maximum
Surface-Mount Packaging
Meets ANSI/EIA 481-2 Carrier Tape Standards—JEDEC SO package
0.004 inch [0.10 mm]
Machine placement (recommendation: locate by terminals, not body)
Terminal Lead Coplanarity
PWB Process Capability
©2000 Bel Fuse Inc. Specifications subject to change without notice. 04.00
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
T1-96
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