2745F2 [BEL]

HIGH FREQUENCY MAGNETICS T1/E1 Through Hole Hardened Transformers; 高频磁性元件T1 / E1通孔淬火变压器


型号：	2745F2
厂家：	BEL FUSE INC.
描述：	HIGH FREQUENCY MAGNETICS T1/E1 Through Hole Hardened Transformers 高频磁性元件T1 / E1通孔淬火变压器变压器
文件：	总2页 (文件大小：62K)
中文：	中文翻译
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HIGH FREQUENCY MAGNETICS

T1/E1 Through Hole Hardened Transformers

TM00128

•

Designed to operate at the DS1 rate of 1.544 Mbits/s

as a line interface transformer

•

Operating temperature range: -40° C to +85° C

Meets IEC 695, 2-2 flammability requirements

Only difference between 2745F and 2745F2 is the

terminal length

PWB Process Capability: standard printed wiring board

assembly techniques, total-immersion cleaning

Winding (3-1) can handle a 6 A surge current for 1

second

•

Reliability testing: Shock, vibration, temperature cycling,

temperature - humidity - bias

Designed for remote powering with simplex-feed

current

ELECTRICAL SPECIFICATIONS AT 25° C

DCR

Ω

Minimum

Interwinding

Breakdown

Voltage

Nominal

Inductance¹

Turns Ratio

mH Min

Leakage

Inductance

µH max

Part Number

±2%

(3-1)

(4-6)

Vrms

(3-1) : (6-4)

1CT : 2

(3-1)

3.15

max

0.65

min

0.42

max

5.2

min

4.3

(3-1)

1.7

2745F

850

2745F2

1CT : 2

5.2

1.7

1. measured at 10 kHz, 0.1 Vac

SCHEMATIC

2745F

2745F2

1 CT : 2

Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com

T1-63

HIGH FREQUENCY MAGNETICS

T1/E1 Through Hole Hardened Transformers

TM00128

MECHANICAL

2745F

2745F2

0.56 (14.22)

MAX

0.56 (14.22)

MAX

0.46 (11.68)

MAX

0.46 (11.68)

MAX

TERMINAL 1

IDENTIFIER

TERMINAL 1

IDENTIFIER

0.35 (8.89)

MAX

0.35 (8.89)

MAX

0.023 (0.584) SQ TYP

(PHOSPHOR BRONZE,

SOLDER COATED)

0.023 (0.584) SQ TYP

(PHOSPHOR BRONZE,

SOLDER COATED)

0.110 (2.79)

±0.010 (0.25)

0.155 (3.94)

0.150

(3.81)

0.150

(3.81)

0.250

(6.35)

0.250

(6.35)

Unless otherwise specified, dimensions are nominal and in inches (millimeters).

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 F23, Preston

Lancashire, PR1 8UD, U.K.

Tel 44-1772-556601

Fax 44-1772-888366

www.belfuse.com

T1-64

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