CMD Catalogue

CMD Catalogue
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CMD Catalogue

Product catalog summary
Overview: The document provides comprehensive details on the CMD series of PCB connectors, which utilize Hypertac hyperboloid contact technology. These connectors are known for their high reliability and performance in demanding environments, offering features such as low insertion/extraction forces, high density, long contact life, and low power consumption.
Specifications: CMD connectors conform to MIL-C-55302 standards and are available in plug and receptacle styles with multiple pin/socket contact positions. They are constructed from glass-reinforced polyphenylene sulfide for flame resistance and durability. Contact materials include beryllium-copper and copper alloys, with gold plating for protection. Additional specifications include solderability and resistance to soldering heat, with maximum capacitance and inductance values provided.
Contact Technology: Hypertac technology ensures low contact resistance and high current ratings, supporting up to 100,000 insertion/extraction cycles. The connectors are designed to withstand shock and vibration, maintaining electrical continuity under harsh conditions.
Requirements: The connectors must meet specific engagement and separation forces, current ratings, and resistance levels. They operate within a temperature range of -65°C to +125°C and can withstand dielectric voltages up to 750 VRMS at sea level.
Quality Assurance: The connectors undergo testing according to military standards for vibration, shock, and solderability, ensuring no interruptions in continuity and maintaining high insulation resistance.
Applications: CMD connectors are suitable for board-to-board connections, measuring and test devices, and cable assemblies, with various terminal types available for different configurations.
Procedures: Instructions for ordering connectors include selecting the connector family, size, style, contact style, terminal style, hardware code, polarization, and contact finishing. Specific codes and configurations are outlined for each step.
Standards and Norms: The connectors conform to MIL-C-55302 standards, ensuring compatibility and reliability. The document also references MIL-P-50884 for flex-circuits.
Recommendations: For optimal performance, ensure connectors are equipped with the same contact positions, appropriate hardware, and identical polarizing combinations. Hot solder dipping is available upon request for terminal end finishing.
Key Data from Tables: Dimensions and weights for connectors are specified, with weights varying based on contact positions and terminal lengths. Contact positions and corresponding dimensions are provided for both receptacle and plug connectors.
Critical Information: Ensure connectors are matched with the same contact positions and polarizing combinations for compatibility. Weights and dimensions are critical for installation and application purposes. Connectors are suitable for measuring and test devices, with specific configurations for extender board applications.
Compliance and Standards: The connectors conform to MIL-C-55302 and MIL-P-50884 standards, ensuring compatibility and reliability in military applications. The document emphasizes the importance of matching plug and receptacle connectors with identical contact positions and polarizing combinations.
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Catalog excerpts

CMD Catalogue-1

CONNECTOR SERIES PCB Connectors

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CMD Catalogue-2

HYPERBOLOID TECHNOLOGY Smiths Connectors offers an extensive range of superior contact technologies suitable for standard and custom solutions. Hypertac® (HYPERboloid conTACT) is the original superior performing hyperboloid contact technology designed for use in all applications and in harsh and demanding environments where high reliability and safety are critical. The inherent electrical and mechanical characteristics of the Hypertac hyperboloid contact ensures unrivalled performance in terms of reliability, number of mating cycles, low contact force and minimal contact resistance. The shape...

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CMD Catalogue-4

1. SCOPE 1.1 Scope This Design covers CMD Connectors Family, plug and receptacle style, with 42, 82, 110, 126, 158, 174, 220, 236 and 316 pin or socket contact positions, conforming to MIL-C-55302. Contact arrangement is offset-grid pattern within dielectric connector body with four rows, .075 in (1.905 mm) center-to-center contact spacing in each row, and .075 in (1.905 mm) row-to-row spacing. Contact size is 0.6 mm nominal pin DIA.Polarization feature is incorporated in each connector assembly to assure correct insertion. Coding key system provides 36 possible keying combinations. There are...

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CMD Catalogue-5

2. APPLIED DOCUMENTS 2.1 Applied documents CMD Connectors Family is designed, manufactured, tested and delivered in accordance with the documents listed below. The latest issue of the following documents, documents amendments and notices, in being on 30 June 1994 are used unless otherwise specified in this Design. MIL-C-26074 Coatings, electroless nickel requirement for. MIL-I-46058 Insulating compound, electrical (for coating printed circuit assemblies). MIL-P-50884 Printed-wiring, flexible and rigid-flex. MIL-C-55302 Connectors, printed circuit subassembly and accessories. MIL-I-81550 Insulating...

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CMD Catalogue-6

3.3 Socket contact and contact terminal Socket contact is HYPERTAC and contact terminal types are: dip solder, (straight and right angle), wire wrappost, surface mount tail, and crimp. 3.3.1 Socket contact materials HYPERTAC springs are wiredrawn from beryllium-copper alloy per QQ-C-530, (ASTM B197). Socket contact body is screw machined from copper-alloy per QQ-B-626, (ASTM B16). Protective finishing is gold plate, over suitable underplate, as specified in MIL-C-55302. 3.3.2 Dip solder, (straight and right angle), wire wrappost, and crimp socket contact terminals are screw machined, one-piece...

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CMD Catalogue-7

3.6 CMD Connectors Family requirements are: - contact engagement and separation forces: maximum engagement force =100 g (3.53 oz); minimum separation force =14 g (.49 oz); - connector mating and unmating forces: maximum mating force =60 g (2.12 oz) multiplied by number of contacts;minimum unmating force =20 g (.71 oz) multiplied by number of contacts; - contact current rating: the connector may have any combination of current flow and ambient temperature provided the contact or connector temperature does not exceed 125 °C. If mated plug and receptacle connectors are both equipped with dip solder,...

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CMD Catalogue-8

BODY CONNECTOR DIMENSIONS Connector figure (mating face) Applicable to plug connector body equipped with dip solder, straight thru, contact terminal. Applicable to plug connector body equipped with all the other contact terminal styles.

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CMD Catalogue-9

Contact terminal types available are: Contact positions Connector style Surface mount tail Wire wrap post (Straight thru) (Right angle) Plug connector pin contacts equipped Check Firm Receptacle connector socket contacts equipped Check Firm Plug connector pin contacts equipped Check Firm Receptacle connector socket contacts equipped Check Firm Plug connector pin contacts equipped Receptacle connector socket contacts equipped Plug connector pin contacts equipped Check Firm Receptacle connector socket contacts equipped Check Firm Plug connector pin contacts equipped Receptacle connector socket...

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CMD Catalogue-10

CMD PLUG CONNECTOR: 42, 82, 110, 126, 158 AND 174 PIN CONTACT POSITIONS PLUG CONNECTOR: 42, 82, 110, 126, 158 and 174 PIN CONTACT POSITIONS, .075 INCH SPACING (1.905 mm), DIP SOLDER (RIGHT ANGLE) TERMINAL STYLE A max B D-shaped guide pins MOUNTING PATTERN, DAUGHTERBOARD APPLICATION, (RECOMMENDED PCB HOLE CONFIGURATION) COMPONENT SIDE Ø 0.70 min Last hole position 4.00 Last contact posi

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CMD Catalogue-11

CMD PLUG CONNECTOR: 42, 82, 110, 126, 158 and 174 PIN CONTACT POSITIONS table I Weight* in grams (with g=9.81 m/s2) Contact positions Contact positions * According to contacts terminal length, and with D-shaped guide pins installed NOTES 1. Dimensions for user installation purpose only. 2. Dimensions are in millimeters. 3. Dimensions in width of these connectors are specified in the table I of this page. 4. Materials, finishes and connectors requirements are described into this catalog. Hot solder dipping,as dip solder terminal end finishing, is available at Customer request, (please consult...

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CMD Catalogue-12

1 connector family 2 connector size 5 contact terminal style Dip solder, right angle, with: A .109 inch (2.76 mm) long dip Y D-shaped guide pins P universal coupling guide pins (for test type connectors) 0 0 When D-shaped guide pins are installed in the 01 polarized position, (see polarization configuration chart on page 44), without Loctite 242 applied. 0 1 to 3 6 When D-shaped guide pins are installed in the proper polarized position and Loctite 242 is applied to the threads, (see polarization configuration chart on page 44). 3 7 When universal coupling guide pins, (for test type connectors),...

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CMD Catalogue-13

CMD PLUG CONNECTOR: 42, 82, 110, 126, 158 and 174 PIN CONTACT POSITIONS PLUG CONNECTOR: 42, 82, 110, 126, 158 and 174 PIN CONTACT POSITIONS, .075 INCH SPACING (1.905 mm), DIP SOLDER (STRAIGHT) TERMINAL STYLE A max 4.00 Last contact position D-shaped guide pins MOUNTING PATTERN, IN PARALLEL ARRANGEMENT BOARD-TO-BOARD CONNECTION, (RECOMMENDED PCB HOLE CONFIGURATION) COMPONENT SIDE Ø 0.70 min = LAST HOLE POSITION

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CMD Catalogue-14

CMD PLUG CONNECTOR: 42, 82, 110, 126, 158 and 174 CONTACT POSITIONS table I Weight* in grams (with g=9.81 m/s2) Contact positions Contact positions * According to contacts terminal length, and with D-shaped guide pins installed NOTES 1. Dimensions for User installation purpose only. 2. Dimensions are in millimeters. 3. Dimensions in width of these connectors are specified in the table I of this page. 4. Materials, finishes and connectors requirements are described into this catalog. Hot solder dipping,as dip solder terminal end finishing, is available at Customer request, (please consult the...

 Open the catalog to page 14

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.