H2EDGCR-2.54 terminal blocks Right Pin header

2.54mm Pluggable Terminal Block Right Pin Header

Design structure: Features a transition from a vertical segment to a horizontal segment. The vertical segment is used for securing to the terminal body, while the horizontal segment is used for soldering to the PCB board.

Core Purpose, Advantages & Material

• Saving vertical space: The fundamental purpose. After soldering, the main body is parallel to the PCB rather than perpendicular, greatly reducing the vertical height—ideal for thin devices.
• Implement horizontal wiring: Wires are connected horizontally from the side. The wire harness can be routed closely along the PCB, making the internal structure compact and facilitating cable management.
• Panel installation compatibility: The terminal strip can be installed closely to the inside of the equipment panel, with the bent pin passing through a pre-opened hole to the main PCB. Users can connect wires from the outside while complex circuitry remains hidden.
• Strain relief: The "L" shape structure withstands lateral tensile and torsional forces better than a straight pin, distributing stress to the solder joints and PCB rather than the vertical pins.
• High flexibility: Adapts to multi-type sockets, meets keying requirements, and supports a universal installation method suitable for various situations.
• Premium Material & Molding: Made of economical brass with good conductivity. Stamped and bent in one step to ensure smooth, burr-free bends. Standard tin plating is used, with gold plating available for high-demand applications.

Type and Pole

Type: PCB Pluggable Screw Terminal Block

Available Poles:

Technical Specifications

PCB Soldering Process & Joint Analysis

The welding part of the curved needle is its horizontal segment, which determines that its welding process and weld joint morphology are significantly different from those of straight needles.

1. Coordination between pins and pads

• - PCB pad: Designed for surface-mount pads (not through-holes) located directly below the horizontal segment of the pins.
• - Cooperation method: The horizontal segment is directly attached to the solder pad. A small bend or groove at the end is sometimes used for temporary positioning via solder paste viscosity.

2. Welding process (Mainly Reflow Soldering)

• - Solder paste printing: Accurately print solder paste onto the pads through a steel mesh.
• - Mounting: Using automated pick-and-place machines or manual labor to accurately place terminals.
• - Reflow soldering: High temperature melts the solder paste; surface tension allows liquid solder to naturally "climb" and encapsulate the lead.
• - Cooling: Solder solidifies, forming a firm connection. (Wave soldering is possible but requires specialized fixtures to protect the plastic body).

3. Solder joint morphology and requirements

• - Full solder filling: Solder should fully wet pins and pads, forming a good meniscus on the side.
• - Pin coplanarity: All horizontal segments must be parallel to the PCB and have consistent heights to prevent open circuits.
• - Accurate positioning: Terminals must not be displaced before soldering to ensure exact alignment.

Dimensions

Packaging & Shipping

We choose high-quality and safe packaging materials to make sure your order won't be damaged during delivery. Acceptable trade terms include: EXW, FOB, CFR, CIF.

Application of Pluggable Terminal Block

• Motion controllers & Servo drivers
• Three-phase power meters & Electricity meters
• Microcomputer protection devices & Protective relays
• Automation equipment & General electric equipment
• Security equipment & Internet of Things (IoT) devices

Terminal Block FAQ