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The Wiring Harness Manufacturer's Association is a trade group for American manufacturers of wiring harnesses, electronic cable assemblies, and cord sets, along with their suppliers and distributors. [1] It publishes the widely used standard IPC/WHMA-A-620 Acceptability of Electronic Wire Harnesses and Cables jointly with IPC. [2]
IPC is a trade association whose aim is to standardize the assembly and production requirements of electronic equipment and assemblies. IPC is headquartered in Bannockburn, Illinois, United States with additional offices in Washington, D.C. Atlanta, Ga., and Miami, Fla. in the United States, and overseas offices in China, Japan, Thailand, India, Germany, and Belgium.
Especially valuable is the method of referencing and annotating cables plus their connectors within and outside assemblies. Examples: 1A1A44J5 - Unit 1, Assembly 1, Sub-Assembly 44, Jack 5 (J5 is a connector on a box referenced as A44) 1A1A45J333 - Unit 1, Assembly 1, Sub-Assembly 45, Jack 333 (J333 is a connector on a box referenced as A45)
The IPC/WHMA-A-620 publication has standards for a wide range of elements within a cable harness, including but not limited to electrostatic discharge protection, conduit, installation and repairs, crimping, pull-test requirements, and other operations that are critical to the production and function of cable harnesses. [12] The standards ...
SMEMA is an acronym for the Surface Mount Equipment Manufacturers Association.. In 1999 they merged with the IPC to form the IPC SMEMA Council. [1]One standard they have is for the wiring of communications between Surface mount technology producing machinery such as a Stencil Printer or a Pick and Place Machine on an Electronics production line.
Hermes is a machine-to-machine communication standard used in the SMT assembly industry. [1]IPC-HERMES-9852. It is a successor to the SMEMA standard, introducing improvements such as: simpler physical wiring (Ethernet), use of popular data transmission formats (TCP/IP and XML), reduced number of barcode scanners (required only once at the beginning of the line), transmission of board data ...
The Category 7 cable standard was ratified in 2002, and primarily introduced to support 10 gigabit Ethernet over 100 m of copper cabling. [2] It contains four twisted copper wire pairs, just like the earlier standards, terminated either with GG45 electrical connectors or with TERA connectors rated for transmission frequencies of up to 600 MHz.
Pin 1 is typically indicated on the body of the connector by a red or raised "V" mark. The corresponding wire in a ribbon cable is usually indicated by red coloration, a raised molded ridge, or markings printed onto the cable insulation. On the connector pin 2 is opposite pin 1, pin 3 is next to pin 1 along the length of the connector, and so on.