INTEGRATED CONNECTOR MODULES 10/100Base-TX MagJack® 2 x 4 0811-2X4R-28 • 8-port shielded RJ-45 connector with integrated 10/100 magnetics • Complies with IEEE standards and all 10/100 Ethernet specifications including 350µH with 8mA DC bias • Design supports AutoMDIX applications • Highly integrated design conserves valuable board space • Compatible with a variety of 10/100 transceiver ICs • Minimum interwinding breakdown voltage of 1500 Vrms • Operating temperature 0° to +70° C • Adaptable, modular design provides higher reliability • Storage temperature -40° to +85° C ELECTRICAL SPECIFICATIONS AT 25° C Insertion Loss dB max Common to Differential Mode Rejection dB min Return Loss dB min 100KHz to 100MHz 1MHz to 30MHz 30MHz to 60MHz 60MHz to 80MHz -1.1 -18 18 - 20 log (f/30MHz) -12 SCHEMATIC Common to Common Mode Rejection dB min 100kHz to 100MHz -40 Crosstalk dB min 100kHz to 100MHz -30 -35 0811-2X4R-28 Pin RD+ 1 RJ-45 1CT : 1 1 RX+ RCT 4 RD- 2 TD+ 3 2 RX1CT : 1 3 TX+ 4 5 6 TX7 8 TCT 7 TD- 6 GND 8 Shield ©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 1 INTEGRATED CONNECTOR MODULES 10/100Base-TX belStack™ 0811-2X4R-28 MECHANICAL 0811-2X4R-28 0811-2X4R-28 1.130 [28.70] Port 2 2.330 [59.18] 1 Port 8 0.150 [3.81] 0.125 [3.18] 1.004 [25.50] Port 7 Port 1 0.425 [10.80] 2.100 [53.34] Solder dipped ground lead (4X) Dimensions are in inches [millimeters]. Standard dimension tolerance is ±0.010 [0.25] unless otherwise noted. 0.550 [13.97] Typical Notes Plastic Housing Contacts Pins Solderability Metal Shield 1. ©2004 Bel Fuse Inc. Thermoplastic, flammability rating UL 94V-0 50 micro-inch hard gold plating Tin-coated copper wire, DIA 0.018" [0.46] Per MIL Std. 202, Method 208 Nickel plated copper alloy(all ground leads are solder dipped) Jack cavity conforms to FCC rules and regulations, part 68, subpart F. Specifications subject to change without notice. 03.04 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 2 INTEGRATED CONNECTOR MODULES 10/100Base-TX MagJack® 2 x 4 0811-2X4R-28 PAD LAYOUT 2.050 [52.07] 1.500 [38.10] 0811-2X4R-28 0.950 [24.13] 0.400 [10.16] Position 8 Upperdeck Typical 0.100 [2.54] typ ø0.062 [ø1.57] 4 places 0.610 [15.49] 0.050 [1.27] typ Position 1 Upperdeck Typical 0.450 [11.43] 0.180 [4.57] ø0.128 [ø3.25] 2 places ø0.035 [ø0.89] typical R0.030 [R0.76] 2 places 0.110 [2.79] 2 places 0.290 [7.37] 2 places 0.100 [2.54] 0.160 [4.06] 0.100 [2.54] 0.250 [6.35] 0.200 [5.08] Position 8 Lowerdeck Typical Position 1 Lowerdeck Typical 2.100 [53.34] PC Board Layout Viewed from Component Side Suggested Panel Opening 2.365 +0.010/-0.005 [60.07 +0.25/-0.13] Metal Panel 0.085 ±0.010 [2.16 ±0.25] 1.030 +0.010/-0.005 [26.16 +0.25/-0.13] 0.015 [0.38] PCB ©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04 CORPORATE FAR EAST EUROPE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 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 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 page 3