PCB Headers
PCB (Printed Circuit Board) headers are electrical connectors designed to simplify the process of joining multiple connections to a printed circuit board (PCB). Typically, one side of the header is designed to be surface mounted and soldered onto the board while the other side accommodates external connections. Pins on the header can be shrouded to make the unit more secure, prevent pins from bending, and allow locking mechanisms.
How Do PCB Headers Work?
PCB headers provide a standardised connection point on printed circuit boards where multiple wires can connect easily without soldering each wire individually. When installed properly through soldering or mounting methods, they create stable reliable pathways for electrical signals between various components ensuring functionality throughout electronic systems.
Benefits of PCB Headers
Ease of Assembly
PCB headers streamline the process of making multiple electrical connections to a PCB. By soldering a single header onto the board, you can easily connect to multiple pins, simplifying wiring and reducing assembly time.
Reliability
PCB headers provide a secure and reliable connection between the PCB and external wires or cables. The soldering ensures a robust and long-lasting connection, minimising the risk of connection failures.
Versatility
PCB headers are available in various configurations, including single and double rows, shrouded and unshrouded pins, and straight or right-angle orientations, providing versatility to meet different design requirements.
Cost-Effective
PCB headers offer a cost-effective solution for making multiple connections to a PCB. Their standardised design and mass production contribute to their affordability, making them a popular choice for various applications.
Modular Design
The modular nature of PCB headers allows for easy replacement or upgrades. If a header needs to be replaced or modified, it can be easily desoldered and replaced without affecting other components on the PCB.
PCB Header Pin Configurations
Single Row
Single-row pin headers have a single line of pins, providing a compact and space-saving solution for applications with limited PCB real estate. They are often used for connecting simple peripherals or when space constraints are a concern.
Double Row
Double-row pin headers feature two parallel rows of pins, offering higher connection density for applications requiring more connections. They are commonly used for connecting more complex devices or when a greater number of signals need to be transmitted.
Pin Header Types
Shrouded Pin Header
Shrouded pin headers have a plastic housing that surrounds the pins, providing protection against bending, accidental contact, and potential short circuits. The shroud also enhances the mechanical strength of the PCB header connector. However, shrouded headers may take up more space on the PCB.
Unshrouded Pin Header
Unshrouded PCB pin headers do not have a protective shroud on the circuit board connector pins, which makes them smaller and lighter. They are more compact than shrouded headers, but may be more susceptible to bending or damage.
Connector Orientations
Straight Pin Header
Straight pin connectors have pins that extend vertically from the PCB surface. They are commonly used for general-purpose connections and when vertical clearance is not a concern.
Right Angle Pin Headers
These headers have pins bent at a 90-degree angle, which make them a good solution when making direct connections sideways. They are also helpful in tight spaces where a straight header just won’t fit, such as when there’s insufficient vertical space.
PCB Header Mounting Methods
Through-Hole Pin Headers
Through-hole pin headers have pins that are inserted through holes in the PCB and soldered on the opposite side. This mounting method provides a strong and reliable connection, suitable for applications that may experience vibration or mechanical stress.
Surface Mount Pin Headers
Surface mount pin headers have pins that are soldered directly onto the surface of the PCB. This mounting method offers a lower profile and is often preferred for applications where space is limited. They are also more accessible to automate in production but might not be as sturdy as through-hole connections.
PCB Header Applications
Industrial Applications
- Automation: PCB headers are extensively used in the growing field of automation, providing connections for equipment like sensors, actuators, and control systems. For example, they are used to connect limit switches, proximity sensors, and motor controllers in automated production lines.
- Industrial Control Systems: PCB headers play a critical role in industrial control systems, enabling connections between various components. For example, engine management systems and fuel regulators in automotives are powered by PCBs and the connections they offer.
- Robotics: As robotics becomes more common, new uses for PCBs and PCB headers are arising as they are required to provide connection, communication, and power within robotic systems.
Medical Devices
- Medical Imaging Equipment: PCB headers are used in medical imaging equipment, such as CT, CAT, and ultrasonic scanners, to connect sensors, cameras, and control boards. They ensure reliable signal transmission and image quality.
- Patient Monitoring Systems: Patient monitoring systems, such as heart rate, blood pressure, and blood glucose monitors, depend on PCBs to obtain accurate readings of vital signs and other physiological parameters. PCB headers provide the crucial connections for such information transmission.
Telecommunications
- Networking Equipment: Networking equipment, such as network switches, routers and phone switching systems, use PCB headers to connect various modules and interfaces, enabling communication and data transfer.
- Telephony Systems: PCB headers are used in telephony systems to connect handsets, microphones, and other components, ensuring clear and reliable communication.
Get Your PCB Header from RS Singapore
As a trusted supplier and distributor of high-quality electrical components and devices, RS Singapore has a wide range of PCB header options for each project’s needs. Our products are sourced from reputable brands, such as HARWIN, Hirose, and Phoenix Contact, ensuring reliability and compliance with industry standards.
RS Singapore also offers a comprehensive selection of mechanical instruments and measuring tools, such as digital calipers and data loggers. With our extensive inventory and user-friendly website, you can conveniently find the equipment you need to complete your projects.
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