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A relay is an electrical component that acts as an electrically operated switch, and such part types commonly serve numerous circuits. When implemented in an electrical system, relays are used for controlling a circuit with a low-power signal or to manage multiple circuits with a single signal. Relays can be used for numerous appliances and electronics such as microprocessors, power system networks, automation equipment, current protection devices, and more. As there are multiple relay types that feature varying construction and capabilities, understanding the most common types and their uses can be beneficial when searching for a solution for your part requirements.
Electromechanical and reed relays in particular are commonly used for applications related to control system power management, and they serve for switching resistive and inductive loads. Both relays are PCB mount types, and they can take advantage of compact relay packages. For their operation, electromechanical relays are capable of producing a magnetic field with the use of an energized coil so that they can move an armature to make or break contact connection. Electromechanical relays are quite efficient, and they are flexible enough to benefit a wide variety of applications.
Reed relays, on the other hand, consist of reeds which serve as the magnetic strip and contacts that are placed within sealed glass tubing. On the outside of the glass tube, a coil is wrapped around for the means of energizing the assembly. To open and close the contacts within the tubing, electricity is induced to the coil in order to generate a magnetic field. Due to the method of operation and the design of the glass tube, reed relays exhibit long service lives and can actuate processes quickly.
For more intensive applications that are commercial or industrial in nature, solid-state relays are an advantageous type. With a lack of moving parts, high resistance to vibration and shock, and other factors, solid-state relays are often found in professional food equipment, medical devices, and renewable energy equipment. When deciding upon a solid-state PCB mounting relay, it is important to consider factors such as the design, mounting type, and operating conditions which can all affect the size and placement of such relays. As some solid-state relays may need a certain amount of room for proper heat dissipation, they should be given ample space from one another during installation.
Electromechanical relays also have requirements for their implementation on PCBs depending on whether they are unsealed, sealed, or a flux-protection type. Unsealed relays in particular have no means of guarding themselves from the harmful effects of flux and cleaning solvents that may damage the internal mechanism, and thus they need to be manually soldered onto the PCB. Sealed relays, on the other hand, are well guarded from both due to their protective housings. Flux-protection relays are also guarded agaisnt flux, though they cannot be immersion cleaned similarly to the unsealed type.
With reliable relay components and their proper implementation within a system, electronic circuits can benefit from their ability to manage circuits for various applications and processes. When you are in need of reliable relays, electronic parts, aircraft components, and other such items, look no further than Veritable Aerospace. Veritable Aerospace is a premier purchasing platform for new, used, and obsolete parts that have come from top global manufacturers that we trust. As you peruse our expansive part and manufacturer catalogs, we invite you to take advantage of our offered RFQ service to quickly request quotes on items that you are interested in for your comparisons. If you have any questions regarding our services or would like to begin the purchasing process, our team of industry experts are readily available for customers 24/7x365 and may be reached by phone or email.
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