scope:

This drawing outlines the requirements for a specific member of a family of compact high contact density (.050 inch), high performance two piece electrical connectors. These connectors are intended for printed circuit board (plug in dual heat sinked daughter board modules, and fixed backplanes) applications utilizing surface mount daughter board and compliant pin backpanel termination techniques. The connector family includes members which provide combinations of low power signal contacts, power contacts, shielded contacts and optical termini. The connector family offers severe operating environment performance capability, such as protective hoods, contact sealing, interfacial seals, electrostatic shielding and other advanced capabilities. This connector family is organized and fabricated utilizing modular design, with available connector module blocks which can be grouped to provide for combinations of low power signal contacts,fiber optic termini, power contacts, and shielded contacts. Specific implementation groupings of these module blocks constitute elements of the connector family. This specific requirements drawing details a member of the connector family which is composed of a grouping of (6) standard low power insulator blocks, with (1) beta, (1) alpha end and (1) center insulator, for use with standard low power tuning fork contacts, and (1) power block, which when combined provide a total of 280 signal contacts and 2 power pins.This assembly mates with a companion daughter card connector. The backpanel connector assembly also includes an electrostatic shield which mates with a daughter card connector metal shroud, providing an electrostatic shield for all contacts in the connector pair. The backpanel connector insulator blocks also provide for installation of three connector keying bushings and allows for use of a center guide pin. This family member does not include module blocks which contain fiber optic termini, or shielded contact elements. Other members of this connector family which include these additional capabilities are included in separate DESC drawings.

The complete part number shall be as specified on this item requirements drawing and constructed using the following format:

Insulator material shall be fabricated using one of the following plastic materials:

A - Thermoplastic, type GPT-30F per MIL-M-24519, or ASTM-D-5138

Connectors shall be terminated using the following termination techniques:

A - Compliant pin termination.

The part number shall include 5 digits to identify the total number of contacts. The first three digits will identify the number of signal contacts, with and the following two digits identifying the number of special contacts (shielded, fiber optic, power, etc...).

The part number will include a single character (A thru F) taken from table I, which will identify the termination tail length, allowing for use in various thickness backplanes, and also possible additional wire wrapping of the termination tails. TABLE I. Termination tail length. 1/ 2/ 3/

Term Type Termination Tail 4/ Length (X Dim) ----------------------------------- A .160 (4.06) B .220 (5.59) C .310 (7.87) D .350 (8.89) E .400 (10.16) F .490 (12.45) 1/ Dimensions are in inches 2/ Metric equivalents are in parentheses 3/ Metric equivalents are given for general information only 4/ X dimension is a reference dimension only.

The part number will contain a single character for this feature.

a. S - To be ordered separately, see table II. TABLE II. Keying feature.

Shape of Manufacturers Vendor CAGE key part number Number ------------------------------------------- D 516-0242-000 31413 V 516-0243-000 31413

The part number will contain a single character (N or S) to indicate if the connector termination area is sealed from the contact blades which extend above the connector insulator blocks. (CONTACT SEALING IS NOT AVAILABLE)

intended Use: