When choosing materials for the 90-degree plug of PCB plug-in connectors, the selection may vary depending on the electrical performance requirements of different industries. Here are the main options available:

1. Iron block material for PCB plug-in connectors with 90-degree plugs
This option is suitable for customers with very low electrical performance requirements. It typically consists of an iron block paired with a 0.3 thickness bronze clip.

2. Small copper block material for PCB plug-in connectors with 90-degree plugs
This option is chosen by customers with moderate electrical performance requirements. It usually includes a small copper block paired with a 0.3 thickness bronze clip, with the height of the small copper block being 6.2MM.

3. Large copper block material for PCB plug-in connectors with 90-degree plugs
This option is preferred by customers with higher electrical performance requirements. It typically consists of a large copper block paired with a 0.4 thickness bronze clip, with the height of the large copper block being 6.9MM.

The aging of PCB terminal connections can be caused by various factors. Firstly, environmental conditions and temperature play a significant role. High temperatures in the surrounding environment or from heat sources can cause the terminals to overheat, leading to insulation breakdown and even explosions or fires.

Secondly, chemical corrosion can also contribute to the aging of terminals. Prolonged exposure to chemical or electrolytic corrosion can degrade the protective insulation layer, reducing insulation effectiveness and accelerating aging.

Lastly, operating at overload for extended periods can cause terminals to overheat due to the heating effects of current flow. Excessive temperatures can speed up insulation aging, particularly in summer months.

To test for terminal aging, one method involves placing five terminals horizontally on a rail, connecting them with rated cross-section wires at least 300mm long, and measuring the voltage drop across each terminal. The test should be conducted in an aging chamber with temperature limits of 20°C to 75°C and a maximum working temperature of 120°C.

During the test, a rated current flows through the terminals for both heating and cooling cycles, with voltage drop measurements taken after every 24 cycles to assess aging. The entire testing process consists of 192 cycles.

Prior to testing, the voltage drop should not exceed 3.2mV. Regular monitoring of voltage drop can help identify aging terminals and prevent potential failures.

If you have any further questions or require assistance with terminal aging testing, please do not hesitate to contact us.

1. Screw connection: This method uses screw terminals to connect wires. It is important to consider the maximum and minimum wire cross-sections allowed, as well as the maximum torque for different screw sizes.

2. Soldering connection: The most common soldering method is tin soldering. It is essential to ensure that a continuous metal connection is formed between the solder material and the surface being soldered. Different types of soldering connections include solder tab style, eyelet solder tab style, and arc notch solder tab style.

3. Crimp connection: Crimping is a technique where metal is compressed and displaced within specified limits to connect wires to contact pairs. Good crimp connections can produce metal intermolecular flow, resulting in symmetrical deformation of the wire and contact material. This type of connection is similar to cold welding and can withstand harsh environmental conditions.

4. Wrapping connection: Wrapping involves wrapping the wire directly around the angular contact pillar. The wire is wrapped, pressed, and fixed at the angular contact pillar to create a sealed contact.

There are two main reasons why terminal blocks may generate high temperatures:

1. Loose terminals leading to increased circuit resistance, resulting in overheating.
2. Control circuit experiencing overcurrent due to reasons such as high power supply voltage or load short circuit faults.

Here are some solutions to these issues:
1. Check the working voltage from the secondary coil of the transformer to the distribution cabinet and then to the electrical equipment.
2. Ensure proper grounding from the transformer to the distribution cabinet to prevent common faults in grounding.

Introduce you to the various types of 5.08mm pitch pluggable PCB terminal blocks that we offer. There are a total of six different types available:

1. Open straight pin PCB terminal block: This type features hollow sides in the plastic housing for easy customization of PCB length requirements. The pins are straight at 180 degrees for easy insertion.

2. Open right-angle pin PCB terminal block: Similar to the straight pin type, but with right-angle pins at 90 degrees for different PCB design needs.

3. Closed straight pin PCB terminal block: This type features plastic housing on both sides of the pins for added stability. The pins are straight at 180 degrees.

4. Closed right-angle pin PCB terminal block: Similar to the closed straight pin type, but with right-angle pins at 90 degrees for specific design requirements.

5. Flanged straight pin PCB terminal block: This type features additional flanges on both sides of the closed pins, with copper nuts inside the flanges for enhanced stability during insertion and removal. The pins are straight at 180 degrees.

6. Flanged right-angle pin PCB terminal block: Similar to the flanged straight pin type, but with right-angle pins at 90 degrees for specific design applications.

 This terminal block is primarily comprised of a male header and a female socket, allowing for easy and secure connection of wires and cables.One of the key features of our Pluggable Terminal Block is its versatility in terms of spacing options. We offer a variety of standard spacing options, including 3.5mm, 3.81mm, 5.0mm, 5.08mm, 7.5mm, and 7.62mm. This allows for greater flexibility in designing and customizing your electrical connections.Pluggable Terminal Block is an electrical connection device specially designed for easy connection and removal of wires. They are usually made of insulating materials and have a pluggable wire connection function, which is used to safely connect wires to circuit boards or other electronic devices.

 

Pluggable terminal blocks have the following main features and advantages:

1. Plug-in connection: Pluggable terminal blocks allow users to easily insert and remove wires. They usually have a spring-type or screw-type wire connection mechanism, making the connection and removal process simpler and faster. In this way, when maintenance, replacement or repair is required, the wire can be easily removed and replaced without intervening in the entire circuit or equipment.

 

2. Flexibility and adjustability: Pluggable terminal blocks provide flexible wire connection methods. They usually have adjustable sockets or wiring screws that can be adjusted according to wire size or demand, suitable for wire connections of different specifications.

 

3. Maintenance and troubleshooting: Pluggable terminal blocks play an important role in the maintenance and troubleshooting process. Through plug-in connection, it is more convenient to check, replace or repair wires without disassembling a large number of circuit boards or equipment.

 

4. Identification and management: Pluggable terminal blocks usually have an identification area for marking the wires or circuits connected to each terminal block. This helps to identify and manage the connections of the circuits and improve the efficiency of maintenance and troubleshooting.

 

5. Reliability and safety: Pluggable terminal blocks provide reliable electrical connections and have good insulation properties. They ensure the stability and safety of the wires during the connection process, reducing the risk of wiring errors and circuit failures.

 

In short, pluggable terminal blocks provide a convenient, flexible and fast way to connect and remove wires. They are suitable for a variety of electronic devices and circuit boards, and provide convenience and reliability during maintenance, replacement and troubleshooting.

Our Pluggable Terminal Block is designed to be user-friendly and durable, ensuring a reliable and long-lasting connection for your applications. The easy plug-and-play design makes installation and maintenance a breeze, saving you time and effort.

Whether you are working on a large-scale industrial project or a small-scale DIY project, our Pluggable Terminal Block is the ideal solution for your wiring needs.

On a circuit board, terminals are metal pins or sockets for electronic components or wires. They serve as connection points and provide physical and electrical connections between electronic components and circuit boards. Here are some common types of terminals on circuit boards:

 

1. Socket terminals: Socket terminals are usually holes or slots made of metal for inserting pins of electronic components (such as diodes, resistors, integrated circuits, etc.). Socket terminals can provide stable and reliable connections, facilitating the plugging and unplugging and replacement of components.

 

2. Pin terminals: Pin terminals are metal pins of the electronic components themselves, which are connected by welding or inserting into holes on the circuit board. They can be in different forms such as straight-in pins, surface-mount pins, package pins, etc., used to connect electronic components to circuit boards.

 

3. Stud terminals: Stud terminals are usually used to connect high-power components or wires, such as motors, power supplies, resistors, etc. They usually have a threaded structure, and the wires are clamped and an electrical connection is established by tightening the nut.

 

4. Spring contact terminals: Spring contact terminals use spring force to provide a tight connection. They are usually used in occasions that require frequent plugging and unplugging, such as test points or connecting external devices.

 

5. Blade terminals: Blade terminals are similar to socket terminals, but are usually used for high current applications. They have blade-shaped pins that can quickly connect electronic components by plugging and unplugging.

 Our team has extensively tested and evaluated the Homnecks connector terminals and we are pleased to report that they have displayed excellent performance and reliability. The terminals have shown exceptional conductivity and durability, ensuring secure and stable connections on the PCB boards.

Furthermore, the use of Homnecks connector terminals has proven to be incredibly efficient and user-friendly. The terminals are easy to install and provide a secure connection without the need for additional tools or complicated processes. This not only saves time during assembly but also reduces the risk of errors or malfunctions.

The function of the terminal is to provide a reliable electrical connection on the circuit board, allowing electronic components to pass current and signals to and from the circuit board. They allow for assembly, maintenance and testing of circuit boards, and provide flexibility and convenience. Different types of terminals are suitable for different connection needs and are selected according to the specific application and component type.