PJ-028B

Series:	--
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Connector Type:	Jack
Gender:	Male
Industry Recognized Mating Diameter:	2.50mm ID (0.098"), 5.50mm OD (0.217")
Actual Diameter:	0.098" (2.50mm ID), 0.256" (6.50mm OD)
Number of Positions/Contacts:	2 Conductors, 3 Contacts
Internal Switch(s):	Single Switch, Normally Closed
Mounting Type:	Through Hole
Mounting Feature:	--
Termination:	Kinked Pin
Shielding:	Unshielded
Features:	--
Insulation Color:	--
Voltage - Rated:	24VDC
Current Rating:	2.5A
Mating Length/Depth:	0.354" (9.00mm)
Contact Material - Plating:	Tin
Body Material:	--
Operating Temperature:	-25°C ~ 85°C
Includes:	--
Housing Material:	Polybutylene Terephthalate (PBT)
Contact Material:	Brass; Copper Alloy
Thread Size:	--
Body Color:	Black
Material Flammability Rating:	UL94 V-0
Ingress Protection:	--

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Barrel - Power Connectors: PJ-028B Application Field and Working Principle

The Barrel - Power Connectors are one of the most widely used connectors in many industries. Correspondingly, their application fields are various: Industrial, military and commercial electronic systems, cable assemblies and cabling, power and telecom systems, aerospace, medical devices, etc. In all of the mentioned fields, the PJ-028B is one of the most widely used connectors.The PJ-028B is a type of circular connector that can be used to connect power supplies, printed circuit boards, communications equipment, and other electronic components. It is designed to meet the need for a reliable mechanical and electrical connection between two systems. The connector consists of two parts – the outlet, which is inserted into the socket; and the plug, which is attached to the mating device.The outlet of the PJ-028B is designed with two gold-plated inner and outer contact blades that are positioned such that currents can be exchanged between the plug and the outlet. This current exchange is carried out using the electric field generated by the two contact blades. The outer contact blade comes into contact with the plug\'s outer metal contact area and the inner contact blade comes into contact with the plug\'s inner metal contact area. The plug is provided with a plastic housing that acts as a barrier between the electric field and any external environment.To provide a secure connection, the outer contact blade of the PJ-028B further includes a rubber gasket at its base. This gasket tightly seals the plug and outlet and prevents air and dust particles from getting through. In certain applications, there is a need for a reliable mechanical connection as well as an electrical connection. Therefore, the outlet is further provided with overmolded plastic or silicone netting which provides additional mechanical stability.The working principle of the PJ-028B revolves around the electrical current exchange carried out by the contact blades. When the plug is inserted into the female outlet, an electrical current is generated and passed along the two contact blades. This current is then transmitted through the plug and the outlet, thus creating a reliable connection between the two parts.In conclusion, the PJ-028B is an ideal connector for connecting power supplies, circuits, communications devices, and other electronic components in various industries. Its reliable design, with two gold-plated contact blades accessed through an electrical field and a rubber gasket for additional mechanical security, ensures a secure, reliable connection between two electronic components.

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