defining a degree of excellence

Corporate Office

Bel Fuse Inc.

198 Van Vorst Street, Jersey City, NJ 07302-4496

Tel: 201-432-0463

Fax: 201-432-9542

E-Mail: BelFuse@belfuse.com

Internet: http://www.belfuse.com

Far East Office

Bel Fuse Ltd.

8F/8 Luk Hop Street

San Po Kong

Kowloon, Hong Kong

Tel: 852-2328-5515

Fax: 852-2352-3706

European Office

Bel Fuse Europe Ltd.

Preston Technology Management Centre

Marsh Lane, Preston PR1 8UD

Lancashire, U.K.

Tel: 44-1772-556601

Fax: 44-1772-888366

T1/CEPT/ISDN-PRI TRANSFORMER

S559-6400-00

MECHANICALS

SUGGESTED

PAD LAYOUT

bel

S559-6400-00

Date Code

0.400

(10.16)

Max

0.675(17.15)

Max

0.60(15.24)

Max

0.640

(16.3)

0.400

(10.2)

0.500

(12.7)

0.10(2.5) Typ

0.05(1.3) Typ

12

7

6

0.10(2.54)

0.03(0.76)

0.470

(11.94)

Max

1

0.340

(8.64)

Max

0.055

(1.40)

0.015(0.38)Min

0.02(0.51) Max

Primary

Inductance

OCL(mH) Min

Leakage

Inductance

L

Pins (4-6) and

Pins (10-12)

Pins (4-6) and

Pins (10-12)

Turns Ratio +/- 5%

Part

Number

Dielectric

Strength

(VAC)

1.1

Pins

(1-3)

Pins

(4-6)

Pins

(7-9)

DCR (ohms)

Max

Pins

(10-12)

Pins (1,2,3) to Pins (10,11,12)

and Pins (4,5,6) to Pins (7,8,9)

Interwinding Capacitance

(pF) Max

Dielectric Strength is measured Pins (1,2,3) to Pins (10,11,12) and Pins (4,5,6) to Pins (7,8,9).

Primary Inductance, Leakage Inductance, and Interwinding Capacitance are measured at 100KHz, 0.02VAC.

S559-6400-00

1.5

0.8

60

1.0

1.0

1.0

1500

Part

Number

Pins (10-12):(1-3)

Pins (4-6):(7-9)

1CT:1.15CT

S559-6400-00

1CT:1CT

All dimensions are in inches(mm).

Dimension Tolerance is +/-0.01(0.25)

unless otherwise specified.

* Dielectric Strength 1500 VAC.

* Temperature Range is

Bel offers a dual, T1, surface mount

transformer packaged to provide both transmit and

receive transformers. This design is easily custom-

ized for other leading transceiver chips by adjusting

the turns ratio.

1

2

3

12

11

10

4

56

9

8

7

SCHEMATIC

TM0003

T102