3M Interconnect Products MDR Connector Selection Guide 3High Density Input/Output Connectors 3M Mini Delta Ribbon (MDR) Connectors Performance and Reliability in Miniature The Mini Delta Ribbon (MDR) is a half pitch interconnect system from 3M, designed to meet the needs of high speed/density input/output applications. With more than 20 years on the market, the MDR system is an established and well-proven solution for high density I/O. MDR enjoys widespread acceptance by offering a combination of design features: n Shielded shells provide EMI/ESD protection n Pre-loaded ribbon contacts provide proven reliable connection n IDC U-shaped contacts allow mass termination n Wide range of pin counts and form factors enable design flexibility As one of the worlds most innovative companies, 3M is continually developing its products to meet your I/O needs. The current range of MDR system components can easily be expanded to meet the specific requirements of a broad range of applications. The MDR connector system contains a ribbon-style contact based on 0.050 centerlines. Both the receptacle and the mating plug contain pre-loaded contacts for reliable contact during insertion and withdrawal cycles. The cable connectors utilize an insulation stripping U-contact to connect to the cable conductor wires. The contact is stamped from a high performance copper alloy, which provides an excellent combination of mechanical strength, electrical conductivity and corrosion resistance. Dedicated 3M Cables for Series 101xx-60x0 EC Cable Type/Description Round Shielded Round Shielded Jacketed Round Shielded Jacketed Pleated Foil Shielded Jacketed Discrete Discrete Wire Cable Discrete Wire Cable Cable Wire Cable 3M Cable Series 3600B 3644B KU-C-KMPVV 90101 Features - Twisted pairs - Twisted pairs - Twisted pairs - Thick jacket for - Dual shielding - Dual shielding - Reduced crosstalk external applications - 35 db average shielding - 35 db average shielding - Very flexible - Suitable for 50 Ohm effectiveness effectiveness unbalanced and 100 Ohm - Reduced crosstalk - Reduced crosstalk balanced impedance - CL2 listed for external use - Suitable for 100 Ohm balanced applications - Wire OD tailored for use with MDR impedance applications - 35 db average shielding - CL2 listed for external use effectiveness - Wire OD tailored for use with MDR - Very low crosstalk - CL2 listed for external use Conductor Size 28 AWG 28 AWG 28 AWG 30 AWG Conductor Material Tinned Copper Tinned Copper Tinned Copper Tinned Copper Conductor Stranding 7 x 0.127 (7x36) 7 x 0.127 (7x36) 7 x 0.127 (7x36) Solid Conductor Quantity 2 to 100 (1 x 50 Pairs) 14 to 100 (7 x 50 Pairs) 14 to 100 (7 to 50 Pairs) 20 to 100 Primary Insulation PVC Polyolefin PVC TPE Primary Color Color Coded Color Coded Color Coded Translucent Jacket Insulation PVC PVC PVC PVC Jacket Color Beige (Black optional) Beige (Black optional) Cream Gray Shield Aluminum Foil + Copper Braid Aluminum Foil + Copper Braid Tinned Copper Braid Pleated Copper Foil Voltage Rating USA / EU V N.E.C. 725, CL2 / <50 N.E.C. 725, CL2 / <50 30 / <50 N.E.C. 725, CL2 / <50 Temperature Min. C -20 -20 -20 - Temperature Max. C +75 +75 +60 +75 UL Recognition / Listing - / 3 - / 3 3 / 3 Flammability UL / CUL N.E.C. 725, CL2 / FT1 N.E.C. 725, CL2 / FT1 VW-1 N.E.C. 725, CL2 / FT1 RoHS compliant 3 3 3 3 Download by Tech Sheet Number: TS-0388 TS-0826 TS-2272 TS-0285 www.3M.com/interconnects use the search window