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HIGH FREQUENCY MAGNETICS
T1/E1 Octal Transformer Modules
* Optimized for all Dallas 3.3V devices and Intel LXT380, LXT381 devices Eight transformers in one surface mount package * * Two modules: S553-6500-B8 with transformers and IC-side surge protection devices S553-6500-B9 with transformers only Meets ITU-T G.703 return loss from -40 to +85 C PWB Process Capability: standard printed wiring board assembly techniques, total-immersion cleaning Reliability testing: Shock, vibration, temperature cycling, temperature - humidity - bias Interwinding breakdown voltage: 1500 Vrms min UL 1950 approved: file number E150991 * * * Operating temperature range -40 to +85C Meets IEC 695, 2-2 flammability requirements
TM01122
*
*
* *
ELECTRICAL SPECIFICATIONS at 25 C
Primary Inductance at 10 kHz mH min TXI : TXO S553-6500-B8 S553-6500-B9 1:2 1:2 RXI : RXO 1:1 1:1 TXI 1.5 1.5 RXI 1.8 1.8 Leakage Inductance at 1 MHz H max TXI 0.3 0.3 RXO 0.5 0.5 TXI 0.6 0.6 TXO 1.2 1.2 RXI 0.6 0.6 RXO 0.6 0.6 35 35 DCR max Return Loss at 102 kHz 120 Application1 Interwinding Capacitance pF max 25 C dB typ TX 19 19 RX 30 30 -40 to +85 C dB min TX 18 18 RX 19 19
Part Number
Turns Ratio 2%
1. Terminated in 23.2 for TX and 120 for RX
SCHEMATIC
IC Side 1 TXI+ 1,2 3.3V 1 TXI1 2 3
S553-6500-B8
Line Side 1:2 40 1 TXO+ 39
S553-6500-B9
IC Side 1 TXI+ 1 2 1 TXI3 1:1 1:2 Line Side 40 1 TXO+ 39 38 1 TXO37 1 RXI+ 36 1 RXI1:2 35 2 TXO+ 34 33 2 TXO1:1 32 2 RXI+ 31 2 RXI1:2 30 3 TXO+ 29 28 3 TXO1:1 27 3 RXI+ 26 3 RXI25 4 TXO+ 24 1:1 23 4 TXO22 4 RXI+ 21 4 RXI-
1 RXO+ 4 1 RXO2 TXI+ 1,2 GND 5 6 7
S U R G E P R O T E C T I O N D E V I C E S
38 1 TXO1:1 37 1 RXI+ 36 1 RXI1:2 35 2 TXO+ 34 33 2 TXO1:1 32 2 RXI+ 31 2 RXI1:2 30 3 TXO+ 29 28 3 TXO1:1 27 3 RXI+ 26 3 RXI25 4 TXO+ 24 23 4 TXO1:1 22 4 RXI+ 21 4 RXI-
1 RXO+ 4 1 RXO2 TXI+ 5 6 7 2 TXI8
8 2 TXI2 RXO+ 9 2 RXO- 10 3 TXI+ 3,4 3.3V 11 12
2 RXO+ 9 2 RXO- 10 3 TXI+ 11 12 3 TXI- 13 3 RXO+ 14 3 RXO- 15 4 TXI+ 16 17 4 TXI18
3 TXI- 13 3 RXO+ 14 3 RXO- 15 4 TXI+ 3,4 GND 4 TXI16 17 18
1:2
1:2
4 RXO+ 19 4 RXO20
4 RXO+ 19 4 RXO20
(c)2005 Bel Fuse Inc.
Specifications subject to change without notice. 05.05
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com page 1
HIGH FREQUENCY MAGNETICS
TM01122
T1/E1 Octal Transformer Modules
MECHANICAL
S553-6500-B8 and S553-6500-B9
0.070 [1.78] ref
1.100 [27.94] max
0.050 [1.27]
0.480 [12.19]
0.645 [16.38]
0.070 [1.78]
0.050 [1.27]
0.020 0.002 [0.51 0.05]
0.030 [0.77] Suggested PCB Pad Layout
o0.015 [0.39] o0.005 [0.13]
S553-6500-B9
0.212 [5.38] ref 0.950 [24.13] 0.225 [5.72] max 0.035 [0.89] 0.600 [15.24] 0.005 [0.13] min 0- 5
0.004 [0.10]
o0.015 [0.39] o0.005 [0.13]
S553-6500-B8
0.265 [6.73] ref 0.950 [24.13] 0.295 [7.49] max 0.035 [0.89] 0.005 [0.13] min 0.600 [15.24] 0- 5
0.004 [0.10]
Dimensions are in inches [millimeters]. Standard dimension tolerance is 0.005 [0.13] unless otherwise noted.
S553-6500-B8 Surge Protection Devices TVS Diode Array: Semtech SRDA3.3-4 Number of arrays: 4 Note: Surge protection provided by the Bel module is equivalent to that advertised in the Semtech SRDA3.3-4 product specification.
CORPORATE
Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
Tape and Reel Packaging 44 mm wide by 24 mm pitch; 13 inch OD, 6 inch ID 200 modules per reel, maximum Meets ANSI/EIA 481-2 Carrier Tape Standards - JEDEC SO Package
(c)2005 Bel Fuse Inc.
Specifications subject to change without notice. 05.05
FAR EAST
Bel Fuse Ltd. 8F / 8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel 852-2328-5515 Fax 852-2352-3706 www.belfuse.com
EUROPE
Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Suite G7, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com
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