71991-421LF

Insulation Color:	Blue
Contact Finish Thickness - Post:	78.7µin (2.00µm)
Contact Material:	Phosphor Bronze
Contact Shape:	Square
Insulation Material:	Thermoplastic, Glass Filled
Applications:	Automotive, General Purpose, Industrial, Telecommunications
Voltage Rating:	--
Current Rating:	--
Features:	--
Ingress Protection:	--
Mated Stacking Heights:	11.04mm
Contact Finish - Post:	Tin
Material Flammability Rating:	UL94 V-0
Operating Temperature:	--
Contact Length - Post:	0.118" (3.00mm)
Insulation Height:	0.275" (6.99mm)
Series:	Dubox™
Contact Finish Thickness - Mating:	78.7µin (2.00µm)
Contact Finish - Mating:	Tin
Fastening Type:	Push-Pull
Termination:	Solder
Mounting Type:	Through Hole
Row Spacing - Mating:	0.100" (2.54mm)
Number of Rows:	2
Pitch - Mating:	0.100" (2.54mm)
Number of Positions Loaded:	All
Number of Positions:	42
Style:	Board to Board
Contact Type:	Female Socket
Connector Type:	Receptacle, Bottom or Top Entry
Part Status:	Active
Packaging:	Tube

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71991-421LF Rectangular Connectors - Headers, Receptacles, Female Sockets

Overview

71991-421LF is a type of rectangular electrical connector constructed to carry signals or power with a reliable, secure connection. It is typically found in industrial and consumer applications such as motion control systems, robotics, computers, electronic measuring instruments, and other typical electrical circuitry.

Application Field

71991-421LF is mainly used in the robotics, computers, and motion control systems. One of its key features is the positive polarization, which locks the plug securely into the receptacle. As such, it ensures a stable and reliable connection, even under harsh industrial conditions. And the contact-retaining design prevents contact release for making the full circuit connection more secure.Aside from its commonly used application fields, 71991-421LF connector can also be used in other applications. It can be utilized as a connector in vehicles, test and measuring equipment, cutting and labeling systems, medical instruments, electrical line hookups, computers and office installations, among other fields.

Working Principle

71991-421LF connector contains a combination of male and female contacts which are inserted into the housings. The “pin” portion, also known as the male contact, is inserted into a round opening on the plug. The “socket” portion, or female contact, is inserted into a round opening on the receptacle. The two parts are then mated together.The male and female contacts are crimped together with a crimping tool. This is a mechanical connection that forms a permanent bond between the contacts and the housings. It is this mechanical connection that provides a secure, reliable connection between the two parts of the connector.

Conclusion

71991-421LF is an example of a rectangular electrical connector that is widely used in industrial and consumer applications due to its high reliability and secure connections. It has a positive polarization feature that ensures a tight connection and contact-retaining design to avoid contact release. And the combination of male and female contacts that are mechanically crimped makes the connection secure and reliable.

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