H2EDGCR-2.5 Pluggable terminal block Right Pin Header

H2EDGCR-2.5 Pluggable terminal block Right Pin Header

The part used for soldering to the circuit board and establishing electrical connection.

Right Pin Header  refers to the pin insertion part that is not straight, but has been bent and shaped at a specific angle (usually 90 degrees).

1.Type and Pole

Type: Pcb Pluggable Screw Terminal Block

The design of the curved needle is not arbitrary; it primarily aims to address issues related to space and assembly. Its core advantages include:

Achieve horizontal installation

Straight pin terminal: After soldering, the terminal is perpendicular to the circuit board. This means that all wires are vertically led out from above the circuit board, occupying a large amount of vertical space.

Bent pin terminal: After soldering, due to the 90-degree bend of the pin, the terminal body is parallel to the circuit board. Wires can be inserted from the horizontal direction, greatly saving vertical space (height) inside the device. This is crucial for compact devices with limited housing height.

Provide strain relief

When the wire is horizontally inserted, if it is subjected to pulling or vibration, the force will directly act on the main body of the terminal and the solder joint.

The "L" shape of the bending pin itself acts as a buffer, better able to withstand and distribute these stresses, reducing direct damage to the solder joints and thus enhancing the mechanical reliability of the connection.

Easy to wire and maintain

The horizontally arranged wires are very neat, facilitating wiring, identification, and inspection. In a dense wiring environment, it is much more convenient to access wires from the side than from above.

During maintenance, technicians can easily access and operate the plug-in and plug-out parts without being obstructed by the dense cables above.

Compatible panel cut-out

In many designs, terminal blocks are installed at the opening of the equipment panel, allowing users to connect wires from the outside. The bent pin design enables the entire terminal block to be flatly attached to the inside of the panel, while the insertion pins are soldered to the internal circuit board through holes on the panel. This is a very standard and practical installation method.

Pole:

2.Material  Of  Pluggable Terminal Block

3.Electrical  Of  Pluggable Terminal Block

4.Mechanical  Of  Pluggable Terminal Block

5.Dimensions

Angle

The most common bend is a 90° right-angle bend, which is also the default form of the "bending needle".

There are designs from other angles as well, but 90° is the industry standard and the most commonly used option.

Material and plating

Base material: Typically consistent with the terminal body, it is made of copper alloys such as brass and phosphor bronze, which are highly conductive, to ensure good current-carrying capacity and elasticity.

Electroplating: The curved needle part usually has the same electroplating layer as the needle foot, with tin plating being the most common. Tin plating provides good solderability, prevents oxidation of the copper substrate, and has a certain degree of corrosion resistance. In some more demanding applications, gold plating may be used to achieve excellent corrosion resistance and stable contact resistance.

forming process

The curved needle is molded in one step through a precise stamping and bending process. This requires the metal material to have good ductility to avoid cracks or stress concentration at the bend.

After the high-quality bent pin is formed, the bend should be smooth and burr-free, with precise angles, to ensure alignment when inserted into the socket and coplanarity during soldering.

Type of soldering leg

Through-hole type: The end of the bent pin is designed to pass through a through-hole on the PCB and then be fixed through wave soldering or manual soldering. This is the most secure connection method.

SMT (Surface Mount Technology) patch type: Although less common, there are also bent pins designed for surface mounting, with their solder pads located at the bottom of the bent portion, connected to the PCB through reflow soldering. This design requires higher strength for the terminal itself and higher requirements for the soldering process.

6.Advantages 

☑ Adapt to multi-type sockets, device design is highly flexible
☑ Keying requirements can be met
☑ Universal installation method, suitable for various situations

summary

The curved pin section of the 2.5mm pitch plug-in terminal block is an ingenious and practical engineering design. Through a simple 90-degree bend, it cleverly addresses three core issues: internal space layout of electronic devices, wiring convenience, and connection reliability. When selecting, in addition to paying attention to electrical parameters such as current and voltage, one should also consider the molding quality of the curved pin, the plating process, and its compatibility with PCB pads. These are all crucial details that ensure the stability of the final product.

7.Application  Of  Pluggable Terminal Block

1.Motion controller    2.Three-phase power meter   3.Microcomputer protection device  4.Electric equipment

5.Automation equipment  6.Security equipment  7.Internet of things equipment

2.5mm pitch bent pin plug-in terminal blocks are widely used in various electronic devices with limited space, such as:

Industrial control: PLC, frequency converter, servo driver.

Communication equipment: routers, switches, base station modules.

Power system: electricity meter, protective relay.

Instruments and meters: data collectors, testing and measuring equipment.

8.Package  Of  Pluggable Terminal Block

We choose the high quality and safe packaging material to make sure  your order  won't  be damaged during delivery.

These trade terms are acceptable:EXW,FOB,CFR,CIF.