These specialized switching components are designed specifically for direct installation onto printed circuit boards. With terminals configured for through-hole or surface-mount technology, they integrate seamlessly with electronic assemblies during production. The compact form factor features control circuitry and switching mechanisms contained within a single package that connects directly to circuit traces.
Unlike traditional relay formats requiring separate mounting and wiring, these board-mounted variants establish electrical connections directly through the PCB itself. Their compact design and standardized footprints make them ideal for modern electronics manufacturing where space optimization is critical. In industrial automation systems, they serve as interface elements between low-voltage control circuits and higher-power loads.
The operation of these board-mounted switching devices follows fundamental electromagnetic or semiconductor principles. In electromechanical versions, a low-power control signal energizes a coil, creating a magnetic field that physically moves contacts to complete or break a circuit. This allows small control signals to switch much larger loads without direct electrical connection between the two circuits.
Solid-state variants utilize semiconductors rather than mechanical components. When triggered by control signals, internal transistors or thyristors change states to allow current flow, achieving the same switching function without moving parts. This semiconductor approach eliminates contact wear while providing faster response times, longer operational lifespans, and superior performance with inductive loads like solenoid valves.
The circuit board mounting format encompasses several distinct technologies, each with specific characteristics. Electromechanical variants use coils and moving contacts, offering versatile switching capabilities and visual confirmation of state through physical movement. These remain common in many applications despite their larger size and mechanical wear considerations.
Solid-state relays eliminate moving parts through semiconductor switching elements, providing silent operation, faster switching speeds, and exceptional longevity—qualities that have made Delcon's products industry standards for decades. Reed relays offer a middle ground, using magnetically-actuated contacts sealed in glass tubes for reliable operation in moderate-power applications. Latching varieties maintain their switched state without continuous power, making them ideal for energy-efficient designs in remote or battery-powered equipment.
These board-integrated switching components deliver numerous benefits compared to traditional relay formats. Their direct mounting eliminates hand-wiring, reducing assembly errors while enabling automated manufacturing processes. The standardized footprints and connection patterns ensure consistent placement and reliable operation.
Space efficiency represents another significant advantage, as these compact components minimize the overall footprint of control systems. Their integration directly onto circuit boards reduces electromagnetic interference issues by shortening connection paths. For mass production applications, the simplified assembly process translates to lower manufacturing costs and improved reliability—particularly when using premium components like Delcon's solid-state options with their industry-leading longevity and 10-year warranty.
The decision between board-mounted and alternative relay formats depends on several application-specific factors. Projects with severe space constraints typically benefit from the compact, integrated nature of PCB-mounted options. Similarly, high-volume manufacturing scenarios gain efficiency through automated placement and soldering processes possible with these standardized components.
Conversely, applications requiring field serviceability or frequent relay replacement might benefit from panel-mount or DIN rail alternatives that can be swapped without soldering. Environmental considerations also influence selection—with industrial-grade board-mounted options like those from Delcon offering excellent performance in demanding conditions with temperature extremes, vibration, or dust exposure. The anticipated production volume often becomes the deciding factor, as the initial design investment for PCB-mounted solutions yields significant long-term manufacturing advantages.
When selecting these integrated switching components, several critical parameters require evaluation. Voltage ratings must align with both control signal levels and switched circuit requirements. Current capacity determines the maximum load that can be reliably controlled without overheating or premature failure.
Contact configuration (normally open, normally closed, or changeover) affects circuit behavior during power loss scenarios. Switching speed becomes crucial in applications requiring rapid response, while coil resistance impacts power consumption in electromagnetically activated versions. For industrial applications, Delcon's solid-state relays offer exceptional specifications with high DC voltage cut-off capabilities (350VDC) and superior noise immunity—features that translate directly to system reliability and reduced maintenance costs throughout the automation equipment lifecycle.