LAN
10/100 Base-T Single Port Transformer Module
8261- 8263
• Provides excellent EMI filtering • Designed for use with data grade unshielded twisted pair cable (UTP-5) • Suitable for adapter card cable and multiport applications • Meets IEEE 802.3 and ANSI X3.263 standards, including 350µH OCL with 8mADC bias
MECHANICAL AND SCHEMATIC
(All dimensions in inches)
SUGGESTED PAD LAYOUT
SCHEMATIC
Center-tapped inductor not included in 8261, so pin 12 connects to the transformer center tap.
ELECTRICAL SPECIFICATION @ 25˚C
Insertion Loss (dB MAX) 0.1-100 MHz 8261 82621 8263 -1.0 -1.0 -1.0 1-30 MHz -22 -22 -20 Differential to Common Mode Rejection (dB MIN) 60-80 MHz -12 -12 -14 30 MHz -42 -45 -42 60 MHz -38 -40 -36 100 MHz -32 -35 -33 30 MHz -50 -50 -50
8261 - 8263
Part Number
Return Loss (dB MIN @ 100Ω) 40 MHz -20 -20 -20 50 MHz -18 -18 -18
Crosstalk (dB TYP) 60 MHz -40 -40 -40 100 MHz -40 -40 -40
Hipot (Vrms MIN)
ISSUE: A 24/07/01
1500 1500 1500
1. Rise time optimized for National’s DP83843.
An ISO 9001 Registered Company
229 Colonnade Road, Nepean, Ontario, Canada K2E 7K3 Tel: (613) 226-1626 Fax: (613) 226-7124 www.filtran.com
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