L17H1220121

Features:	Board Lock, Shielded
Backset Spacing:	0.318" (8.08mm)
Contact Material:	Phosphor Bronze
Wire Gauge:	--
Housing Material:	Thermoplastic, Glass Filled
Contact Form:	Stamped
Color:	--
Voltage Rating:	250V
Operating Temperature:	-55°C ~ 125°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:	17H
Termination:	Solder
Flange Feature:	Mating Side, Female Screwlock (4-40)
Mounting Type:	Through Hole, Right Angle
Contact Type:	Signal
Shell Size, Connector Layout:	1 (DE, E); 1 (DE, E)
Number of Rows:	2, 2
Number of Positions:	9, 9
Connector Type:	Receptacle, Female Sockets
Connector Style:	D-Sub - Stacked
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tray

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Introduction to D-Sub Connectors

D-sub connectors (often referred to as a d-sub or dsub) are a type of electrical connector commonly used to connect computers and other devices in a wide variety of applications. They are named after the “D” shape of their connectors and are usually rated for high-speed data transmission.

L17H1220121 Application Field and Working Principle

The L17H1220121 is a 9-pin, reversible-mount, “D” subminiature connector commonly used in the electronics industry. This particular type of d-sub connector is designed for use in data signaling and the contact arrangement enables frequent use and reliable mating. It utilizes a 3-piece insulation displacement contact and a metal body which provides shielding between the contacts and the environment, resulting in excellent mating integrity.The L17H1220121 is a female-to-male d-sub connector with two hole mounting. It is available in 3 housing variations and up to 9 positions and is ideal for use in telecommunications, data processing, computer networking, medical equipment, and measurement and instrumentation applications.The most commonly used contact arrangement in d-sub connectors is the “IDC” or “Insulation Displacement Contact” which uses a flat blade design to make an electrical connection with another male d-sub pin. The contact consists of two parts; a one-piece metal body and a crimp ferrule which both sit inside the insulation body of the d-sub and press onto the male pin. The body is made of a spring steel that has slots which the crimp ferrule sits in, allowing the contact to move independently and form a secure connection.

Conclusion

The L17H1220121 is a widely used d-sub connector for use in a variety of applications. Its 3-piece insulation displacement contact type and 9-pin, reversible-mount design make it particularly suitable for use in high-speed data transmission and other applications where regular use and reliable mating is required. Thanks to its metal body and crimp ferrule design, the contact is able to move independently and form a secure connection, ensuring an excellent mating integrity even when used in difficult conditions.

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