PCN21B-125PAB-2PF-G

Series:	PCN21
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Connector Type:	Header, Male Pins
Connector Style:	AB 25
Number of Positions:	169 (125 + 44 Ground)
Number of Positions Loaded:	All
Pitch:	0.079" (2.00mm)
Number of Rows:	5 + 2
Mounting Type:	Through Hole
Termination:	Press-Fit
Connector Usage:	CompactPCI
Contact Finish:	Gold
Contact Finish Thickness:	31.5µin (0.80µm)
Current Rating:	1.5A
Voltage Rating:	300V
Operating Temperature:	-55°C ~ 125°C
Features:	Ground Plate

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Introduction

Hard metric connectors are custom designed connectors used for backplane interconnection systems to meet specialized requirements. They provide superior electrical performance, greater system density, and increased durability due to their heavy duty construction. The PCN21B-125PAB-2PF-G is a prime example of this technology. In this article, we will discuss the application fields and working principles of this type of connector.

Application Fields

The PCN21B-125PAB-2PF-G, and other hard metric connectors, are used commonly in backplane applications because of their superior electrical performance. Examples of these applications include industrial control systems, digital audio, military systems, aerospace, and any other application where reliable electrical connections and optimal signal transmission is necessary. Additionally, hard metric connectors are often used in high speed backplane connections, such as typical board-to-board applications, as their durability helps to guard against shock and vibration.

Design of PCN21B-125PAB-2PF-G

The PCN21B-125PAB-2PF-G can be readily identified by its unique design. It is constructed of metal materials with a black zinc-plated finish for superior corrosion resistance and durability. The connector is constructed in a two-piece construction format, with open edges in contact with the backplane for maximum contact reliability. The connector is also fully tested according to UL/cUL requirements.

Working Principle

The working principles of the PCN21B-125PAB-2PF-G are based on the two-piece construction and the open edges in contact with the backplane. This is what allows for the superior electrical performance and improved signal transmission. The two-piece construction keeps the contacts from becoming misaligned when subjected to shock and vibration. The open edges that contact the backplane ensures that there is full contact with the other side of the connection system and superior electrical performance.

Conclusion

In conclusion, the PCN21B-125PAB-2PF-G and other hard metric connectors are ideal for backplane applications due to their superior electrical performance and improved signal transmission. The two-piece construction with open edges in contact with the backplane are integral to their optimal electrical performance and makes them able to withstand shock and vibration in high speed backplane connections.

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