DBMM25SH

Shell Material, Finish:	Steel, Yellow Chromate Plated Zinc
Backset Spacing:	--
Contact Material:	Copper Alloy
Wire Gauge:	--
Housing Material:	Polycyclohexylenedimethylene Terephthalate (PCT)
Contact Form:	Machined
Color:	Black
Voltage Rating:	--
Operating Temperature:	-55°C ~ 150°C
Current Rating:	7.5A
Material Flammability Rating:	UL94 V-0
Ingress Protection:	--
Contact Finish Thickness:	50.0µin (1.27µm)
Contact Finish:	Gold
Series:	24308-Style, D*MM
Features:	--
Termination:	Solder
Flange Feature:	Housing/Shell (Unthreaded)
Mounting Type:	Panel Mount, Through Hole
Contact Type:	Signal
Shell Size, Connector Layout:	3 (DB, B)
Number of Rows:	2
Number of Positions:	25
Connector Type:	Receptacle, Female Sockets
Connector Style:	D-Sub
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction to D-Sub Connectors

D-Sub connectors, also known as D-subminiature connectors, are a type of interconnects used to connect two devices. Most D-Sub connectors have two rows of contacts, and some have three rows or even four rows. The D-Sub connector family includes a variety of shells and contacts, with standardized configurations from up to 9 pins through up to 44 pins.

DBMM25SH Application Field and Working Principle

The DBMM25SH D-Sub connector is an industry-standard miniature B-type connector that screws securely onto a solder connection. It is commonly used in the medical, military and aerospace industries, as well as in domestic electronics applications. Its features include a high level of electrical shielding, vibration-proof terminals, and a dust-resistant design.

Design

The DBMM25SH D-Sub connector has a two-piece design, with an outer shell and an internal terminal assembly. The outer shell is made from zinc-based alloy, and is available in standard- and high-density configurations for greater density of terminals. It features dust caps to protect all internal terminals, even those not in use. The outer shell also has excellent EMI/RFI shielding characteristics, so the signal integrity of the connection is maintained even in noisy applications.

Terminal Assembly

The terminal assembly of the DBMM25SH connector consists of a pin/socket matrix, held together in an integral housing. It is available in several configurations, from 9 to 25 pins/sockets in a single shell. The terminals assemble using screws and nuts that are part of the connector, and feature an undercut thread that resists loosening due to vibration. The terminals are also gold plated, providing a high level of contact integrity.

Application

The DBMM25SH D-Sub connector is extensively used in a range of industries, including medical, military and aerospace. The robust design and high level of shielding make it ideal for connecting components in especially noisy or harsh operating environments. Expansion cards, data acquisition devices, GPS systems, and other peripherals are often connected using the DBMM25SH.

Working Principle

The DBMM25SH connector works by creating a secure mechanical and electrical connection between two devices. The electrical connection is made through a metal-to-metal contact between the pin and socket. The mechanical connection is formed when a screw is used to securely affix the terminal assembly to the outer shell, creating a secure, vibration-resistant connection.

Conclusion

The DBMM25SH D-Sub connector is a reliable and robust interconnect used extensively in the medical, military and aerospace industries. It has a two-piece design, with an outer shell and an internal terminal assembly for secure connections. Its features include dust caps, vibration-proof screws, EMI/RFI shielding, and gold plating for maximum contact integrity.

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