L77HDDG78SOL2RM8C309 Connectors, Interconnects

Features:	Board Lock
Backset Spacing:	--
Contact Material:	Phosphor Bronze
Wire Gauge:	--
Housing Material:	Thermoplastic, Glass Filled
Contact Form:	Stamped
Color:	--
Voltage Rating:	250V
Operating Temperature:	-55°C ~ 155°C
Current Rating:	3A
Material Flammability Rating:	UL94 V-0
Ingress Protection:	--
Contact Finish Thickness:	30.0µin (0.76µm)
Contact Finish:	Gold
Shell Material, Finish:	Steel, Tin Plated
Series:	HD
Termination:	Solder
Flange Feature:	Board Side (M3); Mating Side, Female Screwlock (M3)
Mounting Type:	Through Hole
Contact Type:	Signal
Shell Size, Connector Layout:	5 (DD, D) High Density
Number of Rows:	4
Number of Positions:	78
Connector Type:	Receptacle, Female Sockets
Connector Style:	D-Sub, High Density
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tray

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Introduction
D-Sub Connectors (L77HDDG78SOL2RM8C309) are I/O connectors used to attach cables and circuit board connections. They are most commonly used in electronics and computing applications, such as computers, printers, and other similar electronic devices. The connectors are available in a variety of sizes and formats, including male and female, and can be used to connect a variety of cables. The most common types are DB15, DB25, and DB37.Application Fields
D-Sub Connectors are used in a wide variety of applications due to their flexibility and ability to be used in tight spaces. They can be used to connect computers, peripherals, and other equipment, as well as connecting cables in audio/visual applications.Some of the most common applications are in manufacturing, where the connectors are used to connect machines and other equipment. They are also commonly used in transportation, from automotive and aircraft to boats and trains, where they are used to connect navigation and control systems. In home and office automation, the connectors are used to connect and communicate between smart devices, such as a remote control for a TV or thermostat.Working Principle
D-Sub Connectors use a variety of contact styles, including solder bucket, press fit, and screw terminals. The specific type used depends on the application and manufacturer.Solder bucket contacts use pre-tinned wires that are inserted into the contact points and connected to the circuit board by soldering the terminals. These contacts can provide a reliable connection for long-term use.Press fit contacts use pre-formed pins and receptacles that are inserted into the contact points. The pins and receptacles are then securely fastened to the circuit board by use of a press-fit tool.Screw terminal contacts use a pair of screws and nuts to secure the wires to the contact points. The screws must be tightened by hand or with the use of a tool.Conclusion
D-Sub Connectors (L77HDDG78SOL2RM8C309) are I/O connectors used to attach cables and circuit board connections. They are most commonly used in electronics and computing applications, and can also be used in a wide variety of applications due to their flexibility and ability to be used in tight spaces. The connectors use a variety of contact styles, including solder bucket, press fit, and screw terminals.

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