Amphenol Low Mating Force Rectangular Connectors* MIL-C-55302 (M55302/166 thru /172) Featuring the Amphenol B? Bristle Brush Contact Maximum Performance Efficiency and Cost Effectiveness Low Mating and Unmating Forces * 70% to 90% reduction in mating/unmating forces from conventional pinsocket contacts * high circuit count interconnections now practical * no need for external board support structures for connectors up to 7 inches in length. A center sup- port is recommended for Mother Board Connectors over 7 inches User Oriented * two, three and four row contact arrangements, 10 to 100 contacts per row in one contact per row incre- ments * accessories available to suit latching, piloting and polarization requirements * termination versatility; solderless wrap, straight and 90 PC stud, crimp and compliant pin * front release/front removable contacts in Mother Board, PC and Daughter Board versions * rear release/rear removable crimp contacts for dis- crete wires, or printed circuit pins are provided with Input/Output Connector; size 22D wire well to accommodate 22 to 28 AWG wire * up to 256 keyed mating polarizations available * termination plating options and lengths e standard application tools Durable * extended service life, over 20,000 mating/unmating cycles noble plated brush bunch bristle wires * designed-in serviceability Superior Electrical Capability redundant current paths minimized constrictive resistance uniform current densities stable time/life contact resistance electrical and gas tight contact site integrity Performance * voltage rating: SL 70,000 ft. 1300 325 * one and one-half ounce typical contact engaging/ separating forces * 7 millionm average contact resistance for row A contactst 3 ampere PCB contacts 5 ampere wire wrap/crimp contacts 65 C to +125C temperature rating 5 gigaohms minimum insulation resistance + Resistance will vary depending on the point of measurement and the length of the contact. Functionally Designed * .100 inch center to center contact spacing, square grid * high performance polyester dielectric moldings (UL94V-O) * contacts easily removed and replaced * Materials Connector Body Glass-filled thermoplastic mold- ing material in accordance with MIL-M-24519 type GPT-15F and/or Grade B, Class 15 of MIL-P-46161. * Polarization Keys ~ Glass-filled acetal plastic mold- ing material in accordance with MIL-P-46137 * Locking Screw/Mounting Bushing Corrosion resis- tant steel AISI 300 types passivated in accordance with QQ-P-35 * Contacts * Holders Copper alloy in accordance with Federal Specification QQ-B-626 or SAE J463 Wire Berryllium copper in accordance with Fed- eral Specification ASTM B197 Sleeves If applicable, stainless steel in accor- dance with AMS-5514 passivated in accordance with ASTM A967 * U.S. Patent No. 3,725,844 4,168,569 and 4,358,179 as well as additional U.S. Patents Pending related to the products described in this catalog. Upper Right: An Input/Output and Mother Board Connector Lower Left: Unmated Input/Output and PC Connector Lower Right: Mated Mother Board and Daughter Board ConnectorLow Mating Force signal, power, coax contacts Power and/or coax contacts* are now available in combination with Brush signal contacts in one high density (hybrid) connector. Available with 100 brush signal contacts with up to 12 size 16 power or coax contacts in a 2 row connector Available with 180 brush signal contacts with up to 12 size 12 power or coax contacts in a 3 row connector Use of standard MIL-C-38999, Series Il power and coax contacts Consult Amphenol Aerospace, Sidney, NY (607- 563-5011) for assistance in solving design prob- lems or for specific part numbers that will provide the proper combination of signal, power and coax contacts to meet your connector application requirements. * Power and coax contacts are not provided with the connector and must be purchased separately.