749808-9

Features:	Assembly, Grounding Indents
Backset Spacing:	--
Contact Material:	Brass
Wire Gauge:	--
Housing Material:	Polyamide (PA), Nylon, Glass Filled
Contact Form:	--
Color:	Black
Voltage Rating:	250V
Operating Temperature:	-55°C ~ 105°C
Current Rating:	Varies by Wire Gauge
Material Flammability Rating:	UL94 V-0
Ingress Protection:	--
Contact Finish Thickness:	Flash
Contact Finish:	Gold
Shell Material, Finish:	Steel, Tin Plated
Series:	AMPLIMITE HDP-20
Termination:	Crimp
Flange Feature:	Housing/Shell (Unthreaded)
Mounting Type:	Free Hanging (In-Line)
Contact Type:	Signal
Shell Size, Connector Layout:	3 (DB, B)
Number of Rows:	2
Number of Positions:	25
Connector Type:	Plug, Male Pins
Connector Style:	D-Sub
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction
The 749808-9 is a type of D-Sub connector, which is a type of electrical connector that is often used in many types of applications. The connector consists of two parts, namely a male plug and a female receptacle. The plugs and receptacles usually have a metal outer shell that provides protection against electromagnetic interference (EMI) while also providing mechanical stability. Inside the plug and receptacle is a series of pins and sockets, which are the components that allow for the electrical connection between the two pieces of equipment.

Application Field
D-Sub connectors are commonly used in a wide range of applications, including computers, test and measurement equipment, medical equipment, telecommunications equipment, and industrial control systems. They are used to connect two pieces of equipment in order to allow the transfer of signals or data between them. D-Sub connectors are also often used for grounding purposes. For example, they are often used in audio and video equipment to connect a signal line to the ground, thus providing a low-impedance path for any electrical interference or static electricity to be discharged.

Working Principle
The working principle of this type of connector is relatively simple. The plugs contain a series of pins that are inserted into the sockets of the receptacle. When the pins are inserted, they make an electrical connection with the sockets, thus allowing for the transfer of signals or data between two pieces of equipment. The plugs and sockets also have retaining clips on the outside that ensure that the connection is secure and stable. The clips are designed to hold the plug and receptacle together even when subject to vibration, shock, and other physical stresses.

Conclusion
In conclusion, the 749808-9 is a type of D-Sub connector that is used in a variety of applications. It consists of two parts, a male plug and a female receptacle, which are connected by a series of pins and sockets. The connector is designed to provide EMI protection and mechanical stability, while also allowing for the transfer of signals or data between two pieces of equipment. The working principle of this type of connector is relatively simple and involves inserting the pins of the plug into the sockets of the receptacle to create an electrical connection.

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