INTEGRATED CONNECTOR MODULES 10Base-T belMag™ BM01821 • Shielded connector with integrated 10Base-T magnetics • Compatible with a variety of 10Base-T transceiver ICs • Operating temperature 0° to +70° C • Storage temperature -40° to +85° C • Reduced pin count for improved crosstalk and optimum PCB trace routing • Complies with IEEE 802.3 standards and all 10Base-T Ethernet standards • Integrated design conserves valuable board space • Minimum interwinding breakdown voltage of 1500 Vrms • Adaptable, modular design provides higher reliability Available Options • Various transformer turns ratios ELECTRICAL SPECIFICATIONS AT 25° C Insertion Loss dB max Return Loss dB min Common to Common Mode Rejection dB min Crosstalk dB min 1MHz to 10MHz 1MHz to 10MHz 10MHz to 30MHz 1MHz to 10MHz 0811-1X1T-12 -1.0 -15 -40 -40 200 0811-1X1T-22 -1.0 -15 -40 -40 200 Part Number OCL µH min SCHEMATIC 0811-1X1T-12 0811-1X1T-22 RJ45 TCT 1 TCT 1 1CT : 1.41 1 TX+ 2 TX- TD+ 2 TD- RD- 1CT : 2 1 TX+ TD+ 2 TD- 3 3 RD+ 4 RJ-45 PIN 1CT : 1 5 RCT 6 RD+ 4 3 RX+ 4 5 RD- 5 6 RCT 6 RX- 2 TX1CT : 1 3 RX+ 4 5 6 RX7 8 7 8 Shield Shield ©2001 Bel Fuse Inc. Specifications subject to change without notice. 08.01 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 10Base-T belMag™ BM01821 MECHANICAL 0811-1X1T-12 0811-1X1T-22 0.570 ±0.010 [14.48 ±0.25] 0.755 ±0.020 [19.18 ±0.51] 1.005 [25.53] max 0.250 [6.35] 0.661 [16.79] max 0.190 [4.83] 0.531 [13.49] 0.125 [3.18] Pin 1 0.305 [7.75] 0.130 [3.30] 0.125 [3.18] Dimensions are in inches [millimeters]. Standard dimension tolerance is ±0.010 [0.25] unless otherwise noted. 0.565 [14.35] PAD LAYOUT 0.635 [16.13] 0.500 [12.70] 0.068 [1.71] Notes Ø0.062 [Ø1.57] 2 places Ø0.128 [Ø3.25] 2 places 0.565 0.440 [14.35] [11.18] 1 Plastic Housing Contacts Pins Solderability Metal Shield 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 Tin lead plated copper alloy Ø0.035 [Ø0.89] 6 places 1 2 34 56 Metal Panel 0.681 [17.30] 0.050 [1.27] 0.080 [2.03] 0.080 [2.03] Suggested PCB Pad Layout Component Side View 0.546 [13.87] Suggested Panel Opening ©2001 Bel Fuse Inc. PCB Specifications subject to change without notice. 08.01 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 2