2795N [BEL]
HIGH FREQUENCY MAGNETICS Miniature Dual Turns Ratio Surface Mount Transformers; 高频磁性元件小型双匝数比表面贴装变压器
| 型号： | 2795N |
| 厂家： | 
BEL FUSE INC. |
| 描述： | HIGH FREQUENCY MAGNETICS Miniature Dual Turns Ratio Surface Mount Transformers |
| 文件： | 总2页 (文件大小：40K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HIGH FREQUENCY MAGNETICS
Miniature DualTurns Ratio Surface MountTransformers
TM00145
•
•
Transformers provide a dual turns ratio for DS1,
CEPT 75 and CEPT 120 line interface functions
•
•
•
Operating temperature range: -40° C to +85° C
Meets IEC 695, 2-2 flammability requirements
Maximum inductance unbalance of center-tapped
winding is 0.2%
PWB Process Capability: standard printed wiring board
assembly techniques, total-immersion cleaning
Metallic surge voltage capability for 2795Y is 5000V
peak
•
•
•
Reliability testing: shock, vibration, temperature cycling,
temperature - humidity - bias
•
Minimum interwinding breakdown voltage of 1500
Vrms
For 2795T and 2795Y application note refer to document
TM00145B
For 2795N application note refer to document TM00145A
ELECTRICAL SPECIFICATIONS at 25° C
Primary
Inductance1
mH min
Leakage
Inductance2
µH max
DCR
Ω
max
Turns Ratio
± 1%
Interwinding
Capacitance
pF typ
Part Number
(4 - 1) : (3 - 6) (4 - 5) : (3 - 6)
(4 - 1)
1.8
(4 - 1)
---
(4 - 5)
0.8
0.5
0.45
--
(4 - 5)
1.8
(4 - 1)
2.2
(3 - 6)
2.5
2795G
2795N
1 : 1.14CT
1 : 1.070CT
1 : 1.89CT
1 : 1.35CT
1 : 1.353CT
1 : 2.40CT
35
36
47
1.7
0.6
1.7
2.2
2.3
2795T
1.3
0.6
1.4
1.8
3.3
Part Number
2795Y
(3 - 6) : (4 - 5) (3 - 6) : (4 - 1)
(3 - 6)
0.3
(4 - 5)
0.8
(4 - 1)
1.1
(3 - 6)
0.3
1 : 1.89
1 : 2.39
1.6
--
43
1. Measured at 10 kHz, 0.1 Vac
2. Measured at 100 kHz, 0.1 Vac
SCHEMATICS
2795G
2795Y
2795N
2795T
3
4
2
4
3
2
6
CT
5
1
5
1
6
Note: Pins 2 and 3 must be connected externally.
©2000 Bel Fuse Inc. Specifications subject to change without notice. 07.00
Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
T1-99
HIGH FREQUENCY MAGNETICS
Miniature DualTurns Ratio Surface MountTransformers
TM00145
MECHANICAL
0.240[6.10] max
5
2795G
2795N
2795T
6
4
2795Y
0.186
[4.72]
A
0.073 [1.85]
0.065
[1.65]
0.040 [1.02]
0.347
[8.80]
max
0.057
[1.45]
0.265
[6.73]
ref
0.364
[9.25]
0.234
[5.95]
No metallization
or solder mask
in cross-hatched
designated area
A
Terminal 1 ID
0.020 [0.51]
1
2
3
0.073 [1.85]
0.033 (0.84)
0.265
[6.73]
max
Suggested PCB Pad Layout
Note: Unless otherwise specified, dimensions
are nominal and in inches [millimeters].
0.055
[1.40]
Supplementary Information
Operating Temperature Range –40° C to +85° C
Safety Agency Compatibility
Surge Voltage Capability
Metallic Voltage
Underwriters Laboratories, Inc. UL 1459
10/700 µs; 10 repetitions of alternating polarity
2500 V peak generator output, 25Ω generator resistance
2500 V peak generator output, 25Ω generator resistance
IEC-695, 2-2 (needle flame test), materials are UL 94 VO approved
Bellcore TR-TSY-000357-1(shock, vibration, temperature cycling, temperature-humidity-bias)
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
Longitudinal Voltage
Flammability Compliance
Qualification Compliance
Simulation Model
Surface-Mount Packaging
Meets ANSI/EIA 481-2 Carrier Tape Standards—JEDEC SO package
0.004 inch [0.10 mm]
Standard printed-wiring board assembly and cleaning techniques
Standard solder reflow techniques
Terminal Lead Coplanarity
PWB Process Capability
Machine placement (recommendation: locate by terminals, not body)
©2000 Bel Fuse Inc. Specifications subject to change without notice. 07.00
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
T1-100
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