71991-311LF Connectors, Interconnects

Features:	--
Insulation Color:	Blue
Insulation Height:	0.275" (6.99mm)
Contact Length - Post:	0.118" (3.00mm)
Operating Temperature:	--
Material Flammability Rating:	UL94 V-0
Contact Finish - Post:	Tin
Mated Stacking Heights:	11.04mm
Ingress Protection:	--
Contact Finish Thickness - Mating:	30.0µin (0.76µm)
Current Rating:	--
Voltage Rating:	--
Applications:	Automotive, General Purpose, Industrial, Telecommunications
Insulation Material:	Thermoplastic, Glass Filled
Contact Shape:	Square
Contact Material:	Phosphor Bronze
Contact Finish Thickness - Post:	78.7µin (2.00µm)
Number of Positions Loaded:	All
Packaging:	Tube
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Connector Type:	Receptacle, Bottom or Top Entry
Contact Type:	Female Socket
Style:	Board to Board
Number of Positions:	22
Series:	Dubox™
Pitch - Mating:	0.100" (2.54mm)
Number of Rows:	2
Row Spacing - Mating:	0.100" (2.54mm)
Mounting Type:	Through Hole
Termination:	Solder
Fastening Type:	Push-Pull
Contact Finish - Mating:	Gold

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Rectangular Connectors - Headers, Receptacles, Female Sockets

The 71991-311LF series of header, receptacle and female socket connectors is a range of rectilinear rectangular connectors commonly used in a variety of applications, ranging from wire harnessing to backplane systems.

Application Fields

The 71991-311LF connectors provide robust, durable electrical connections for a broad range of applications. This header and receptacle series is particularly well suited for use in all data communication systems that require high speed, wide bandwidth, and extreme reliability such as those used in the telecom, computer, and instrumentation industries. When used in conjunction with a high-density printed circuit board, these connectors offer superior electrical performance for data, signal, and power transfer.In industrial applications, 71991-311LF connectors can be used to interconnect and secure signal and power sources to motors, relay and switchgear, contactors, solenoids, and various sensing and monitoring components. In addition, the rugged construction of the 71991-311LF series withstands sustained mechanical vibration and shock to ensure reliable operation of all types of machinery and equipment.

Design and Construction

71991-311LF headers, receptacles, and female sockets are manufactured to the highest quality standards using molded high temperature thermoplastic housings with interlocking designs for secure connections. The connectors have a minimum operating temperature range of -55°C to +105°C, with an added temperature range of up to 125°C depending on current rating and signal level type.The 71991-311LF series is available in three different types: low profile, vertical, and right angle. All three types feature secure and efficient strain relief systems that are both UL and CSA approved. The series is provided with either tinned or gold-plated terminals to ensure superior electrical contact performance. The contact arms are securely retained and come in various current rating sizes, ranging from 2A to 15A, depending on the specific type of terminal/series selected.

Working Principle

The working principle of the 71991-311LF series is based on a friction lock connection system. This system consists of two components – the header and the receptacle. The contacts of the header and receptacle mate together, ensuring a secure electrical connection. The finger friction force of the contact arms in the header and receptacle maintain mating engagement.In addition to the friction lock system, the 71991-311LF series also features a secondary latch system to ensure a reliable connection. The latch mechanism is a mechanical attribute of the headers and receptacles that ensures that they remain engaged when the correct insertion force is applied. This ensures that the contacts remain mated and that the connection remains secure.The high-temperature thermoplastic housings provide protection against dust, water, and other contaminants, ensuring a robust connection that can withstand vibrations and shock. The appropriate cable strain reliefs also help to ensure a reliable and secure connection, however, the use of cable clamps and other cable management techniques are always recommended.

Conclusion

The 71991-311LF series of header, receptacle, and female socket connectors offers a secure, efficient, and reliable solution for a wide range of data communication applications. The robust construction, reliable contact performance, and superior strain relief ensure that the 71991-311LF series is well suited for any application that requires a reliable and secure electrical connection.

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