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defining a degree of excellence
TM0009
T1/CEPT/ISDN-PRI TRANSFORMER S553-3855-02
Bel introduces a new "pick and place" compatible, small footprint, surface mount impedance matching transformer for ISDN-PRI/T1/CEPT applications.
* Pick and Place Compatible. * Small form factor to maximize board space.
MECHANICALS SCHEMATIC
0.285(7.24) Max
bel
Date Code
S553-3855-02
1
0.375(9.53)Max 0.350(8.89)Min 16
Primary
Secondary
15
14
13
12
11
10
9
Top View
0.018(0.46) +/- 0.002" 0.50(12.70) Max 0.225(5.72) Max 0.015(0.38)MAX 0.004(0.10)MIN 0.35 (8.89) 1 2
Secondary
3
4
5
6
7
Primary
8
4O Nom 0.012(0.30)Max 0.008(0.20)Min
0.025(0.64)Max 0.015(0.38)Min
Dimensions in inches (mm) Dimension tolerance +/- 0.01(0.25) unless otherwise stated
ELECTRICALS
@ 25o C
Leakage DC Resistance Interwinding DC Primary Hipot Inductance DCR Sec Inductance L (mH) Max Capacitance Resistance Part (Vrms) (ohm) Max L Cww DCR Pri OCL (mH) Min Number Pins Pins Pins Pins Pins (pF) Max (ohm) Max Pins (16-14):(1-3) (6-8):(11-9) Min (16-14)* (6-8)** (1-3) (11-9) S553-3855-02 1:1.15CT 1CT:2CT 1.20 1500 0.6 0.8 0.70 30 1.00 0.70 Turns Ratio
* Leakage Inductance is measured with Pins (1-3) shorted. ** Leakage Inductance is measured with Pins (11-9) shorted.
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
T109

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