A-TB381-ED21SB

Mounting Type:	Through Hole
Screw Thread:	M2
Torque - Screw:	0.245 Nm (2.17 Lb-In)
Screw Material - Plating:	Steel - Zinc Plated
Clamp Material - Plating:	Brass - Nickel Plated
Contact Material - Plating:	Brass - Tin Plated
Housing Material:	Thermoplastic
Operating Temperature:	-40°C ~ 115°C
Color:	Green
Features:	--
Wire Termination:	Screw - Rising Cage Clamp
Series:	A-TB381
Wire Gauge:	16-24 AWG
Voltage:	300V
Current:	8A
Mating Orientation:	Horizontal with Board
Pitch:	0.150" (3.81mm)
Positions Per Level:	21
Number of Levels:	1
Part Status:	Active
Packaging:	Bulk

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A-TB381-ED21SB application field and working principle

Terminal Blocks - Wire to Board (A-TB381-ED21SB) are an innovative range of products for quick and easy internal and external electrical wiring, specifically designed for use in the automotive industry. As wire-to-board connectors, these devices are also referred to as PTO (panel-to-board) connectors. This terminal block system utilizes crimp contacts that are securely connected to a PCB’s top surface, wire-to-wire connection, and other wire-to-component connection.The ED21SB model is a top notch product from the A-TB381 range that provides a secure electrical interconnection between wire-to-board (PTO) and wire-to-component applications. By utilizing crimp contacts connected to a PCB’s top surface, the ED21SB allows for superior waterproofing, corrosion protection and insulation.

Application Field

The ED21SB model is best used in automotive design and is perfect for applications that require a high degree of sealing and vibration protection, such as those found in industrial control, trams, or remote instrumentation units. This terminal block system offers superior protection against EMI (electromagnetic interference), ESD (electrostatic discharge), and RF interference that could adversely affect the design. The A-TB381-ED21SB is also ideal for direct soldering applications.

Working Principle

The A-TB381-ED21SB has a highly reliable and secure electrical interconnection between two conductive surfaces. It does this through the use of four different methods: split sleeve, push-in terminal, crimp terminal, and surface mount terminal. These four methods are used to maximize the level of electronic protection that this terminal block offers. The split sleeve method involves the insertion of two conductors into the sleeve assembly and simultaneous fixing via a set screw or key. This ensures a secure connection and offers a multiple wire capacity option. The push-in terminal method involves the insertion of a continuous conductor wire into the terminal blade for an electrical connection. This method is beneficial for saving labor as it offers an easier and quick assembly process. The crimp terminal method requires a crimping tool to crimp the conductor wire within the contact. This is the most common method in use and ensures that the electrical connection is properly made. Lastly, the surface mount terminal method involves the direct soldering of the conductor wire onto the contact pad of the terminal block. This provides an even more secure connection.Due to its easy assembly and secure connector options, the ED21SB is an ideal terminal block for automotive and control applications. This terminal block system is tested and certified according to IEC 60947-7-2 for universal compatibility and safety compliance. In addition, it has a UL 94-V0 flammability rating, UL 758 two-pair rating, and a 3,000V AC voltage rating for superior safety and performance.The ED21SB is highly reliable and provides the user with a secure and efficient connection. It offers easy installation, superior protection against EMI, ESD, and RF interference, long-lasting connections, and reliable waterproofing and insulation. In conclusion, the A-TB381-ED21SB terminal block system has proven itself to be a versatile and reliable solution for electrical wiring applications.

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