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The micro ribbon or miniature ribbon connector is a common type of
The micro ribbon or miniature ribbon connector is a common type of electrical connector
Components of an electrical circuit are electrically connected if an electric current can run between them through an electrical conductor. An electrical connector is an electromechanical device used to create an electrical connection betwee ...
for a variety of applications, such as in computer and telecommunications
Telecommunication is the transmission of information by various types of technologies over wire, radio, optical, or other electromagnetic systems. It has its origin in the desire of humans for communication over a distance greater than tha ...
equipment having many contacts.
The connector contains two parallel rows of contacts within a shielded case having a characteristic D-shape similar to that used in D-subminiature
The D-subminiature or D-sub is a common type of electrical connector. They are named for their characteristic D-shaped metal shield. When they were introduced, D-subs were among the smallest connectors used on computer systems.
Description, no ...
connectors. The contacts are not pins, but small flat bands of metal, called ribbon contacts. The connectors are manufactured in many capacities, including 14-, 24-, 36-, 50-, 64-, and 100- pin varieties. They may be mounted on board
Board or Boards may refer to:
Flat surface
* Lumber, or other rigid material, milled or sawn flat
** Plank (wood)
** Cutting board
** Sounding board, of a musical instrument
* Cardboard (paper product)
* Paperboard
* Fiberboard
** Hardboa ...
s, panels, or may terminate cables. Wires are attached by means of solder
Solder (; NA: ) is a fusible metal alloy used to create a permanent bond between metal workpieces. Solder is melted in order to wet the parts of the joint, where it adheres to and connects the pieces after cooling. Metals or alloys suitable ...
, crimping or insulation displacement. Female connectors have bail locks for a sturdy connection to the male
Male (Mars symbol, symbol: ♂) is the sex of an organism that produces the gamete (sex cell) known as sperm, which fuses with the larger female gamete, or ovum, in the process of fertilization.
A male organism cannot sexual reproduction, repro ...
connector. Screws may also be employed to secure connections.
This connector type is also known as ''telco'', ''25-pair'', ''miniature delta ribbon'', ''mini D ribbon'', ''delta ribbon'', ''MDR'', ''Amphenol'', or ''CHAMP'' miniature ribbon connector. Although it was invented by Amphenol
Amphenol Corporation is a major producer of electronic and fiber optic connectors, cable and interconnect systems such as coaxial cables. Amphenol is a portmanteau from the corporation's original name, American Phenolic Corp.
History
Amphenol ...
, many companies now produce it, such as 3M, TE Connectivity
TE Connectivity is an American Swiss-domiciled technology company that designs and manufactures connectors and sensors for several industries, such as automotive, industrial equipment, data communication systems, aerospace, defense, medical, o ...
(formerly Tyco Electronics, formerly AMP), and Hirose Electric Group
is a Japanese company specializing in the manufacturing of electric connectors. The company was founded in 1937 as Hirose Manufacturing, changed its name to Hirose Electric in August 1963 and started selling internationally in 1968.
Hirose als ...
.
Two major sizes are available. The larger size has 0.085 inch (2.16 mm) contact pitch. This size, with 36 pins and bail locks, is also known as a ''Centronics'' connector because of its introduction by Centronics
Centronics Data Computer Corporation was an American manufacturer of computer printers, now remembered primarily for the parallel interface that bears its name, the Centronics connector.
History
Foundations
Centronics began as a division o ...
for use with the parallel port of printers, and is standardized as ''IEEE 1284
IEEE 1284 is a standard that defines bi-directional parallel communications between computers and other devices. It was originally developed in the 1970s by Centronics, and was widely known as the Centronics port, both before and after its IE ...
type B''. Other connectors of this size are also called Centronics connectors. The smaller size has 0.050 inch (1.27 mm) pitch. This size, with 36 pins, is also known as a ''mini-Centronics'' connector, and is standardized as ''IEEE 1284 type C''.
Applications
*14-pin connector: printer port used on MSX home computers and on various other Japanese computers such as the NEC PC-6000,PC-8800
The , commonly shortened to PC-88, are a brand of Zilog Z80-based 8-bit home computers released by Nippon Electric Company (NEC) in 1981 and primarily sold in Japan.
The PC-8800 series sold extremely well and became one of the three major Japa ...
and PC-9800
The , commonly shortened to PC-98 or , is a lineup of Japanese 16-bit and 32-bit personal computers manufactured by NEC from 1982 to 2000. The platform established NEC's dominance in the Japanese personal computer market, and, by 1999, more ...
series
*24-pin connector: IEEE 488
IEEE 488 is a short-range digital communications 8-bit parallel multi-master interface bus specification developed by Hewlett-Packard as HP-IB (Hewlett-Packard Interface Bus). It subsequently became the subject of several standards, and ...
(GPIB, HP-IB) interface
*36-pin connector: IEEE 1284
IEEE 1284 is a standard that defines bi-directional parallel communications between computers and other devices. It was originally developed in the 1970s by Centronics, and was widely known as the Centronics port, both before and after its IE ...
parallel interface
*50-pin connector: SCSI-1
Parallel SCSI (formally, SCSI Parallel Interface, or SPI) is the earliest of the interface implementations in the SCSI family. SPI is a parallel bus; there is one set of electrical connections stretching from one end of the SCSI bus to the oth ...
interface (SCSI connector
A SCSI connector ( ) is used to connect computer parts that use a system called SCSI to communicate with each other. Generally, two connectors, designated male and female, plug together to form a connection which allows two components, such as a c ...
)
*50-pin connector: RJ21X " telco connector" (telephone systems)
See also
*Ribbon cable
A ribbon cable (also known as multi-wire planar cable) is a cable with many conducting wires running parallel to each other on the same flat plane. As a result, the cable is wide and flat. Its name comes from its resemblance to a piece of ribb ...
*25-pair color code
The 25-pair color code, originally known as even-count color code, is a color code used to identify individual conductors in twisted-pair wiring for telecommunications.
Color coding
With the development of new generations of telecommunication c ...
References
Electrical signal connectors Signal cables {{Computer-hardware-stub