L717HDDH78POL2RM5

Features:	Board Lock, Grounding Indents
Backset Spacing:	--
Contact Material:	Brass
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:	Flash
Contact Finish:	Gold
Shell Material, Finish:	Steel, Tin Plated
Series:	HD
Termination:	Solder
Flange Feature:	Board Side (4-40)
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:	Plug, Male Pins
Connector Style:	D-Sub, High Density
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tray

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D-Sub Connectors: L717HDDH78POL2RM5 Application Field and Working PrincipleD-Sub connectors, also called "D-Subminiature" or "D-Sub" connectors, are a group of electrical connectors developed by the Deutsch company in the 1940s. They are widely used in a variety of applications, including RS-232, RS-422, RS-485, various analog and digital audio and video interfaces, as well as circuit board-level signal connector designs. The L717HDDH78POL2RM5 is a specific D-Sub connector. In this article, we will discuss the application field and working principle of the L717HDDH78POL2RM5.The L717HDDH78POL2RM5 is a 9-pin female D-Sub connector with screw lock connections. It has good shielding performance, allowing for the transmission of signals up to 10-100Mb/s. The connector is small in size, thereby making it suitable for space-restricted applications, such as handheld instrumentation, medical control systems and portable instrumentation. It is also commonly used for connecting circuit boards in computer systems and other digital entertainment systems.The working principle of the L717HDDH78POL2RM5 involves two main components, namely the pins and the receptacles. The pins consist of an electrically conductive contact (e.g. a copper alloy) in which a spring is contained, and a support structure which maintains the contact in the correct position. Each pin is surrounded by a plastic casing which prevents damage due to vibration and mechanical shock. The receptacles contain circuitry which processes and maintains the signal sent from each pin.The contact force between the pins and the receptacles are extremely important during use, as an insufficient contact force can cause signal impairment and data corruption. To ensure a reliable contact force, the contacts are designed in such a way that they are slightly spring-loaded and self-adjust. This self-adjustment compensates for any losses in contact force that could occur over time due to vibration or temperature changes.In conclusion, the L717HDDH78POL2RM5 is a female 9-pin D-Sub connector used for various applications, including RS-232, RS-422 and RS-485 communications. It features good shielding performance, is small in size, and features self-adjusting contacts which ensure a good contact force between the pins and the receptacles. The L717HDDH78POL2RM5 is a dependable and effective connector for a diverse range of applications requiring data transmission.

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