Reed Relays Reed relays are compact, hermetically sealed switches that use magnetically actuated reeds to open and close circuits. They provide reliable signal switching with isolation between the control coil and the switched circuit, making them suitable for dense electronic assemblies and precision instrumentation. Key benefits Small footprint with solid performance for spaceconstrained equipment Hermetically sealed glass envelope protects the reeds from contaminants and extends life Fast switching with low coil drive power for efficient operation coiltocontact isolation reduces noise and interference in sensitive signal paths Durable contacts and sealed construction resist wear, arcing, and environmental ingress Flexible coil voltage and contact configurations to fit multiple control scenarios Available in throughhole and surfacemount packages for versatile PCB designs Broad temperature tolerance supports use in challenging environments Construction and compatibility Construction: glass encapsulated reed switches inside a hermetic envelope Coil options: multiple coil voltages are available to suit different control logic levels Contact configurations: SPST, SPDT, and DPDT variants are commonly offered to meet routing needs Contact materials: selection varies by model to balance low resistance, wear resistance, and longevity Mounting: compatible with standard PCB assembly processes, including throughhole and surfacemount formats Isolation: strong electrical isolation between coil and contacts enhances system safety and reduces crosstalk Performance attributes Fast switching speed suitable for frequency signal routing Low drive power requirements help minimize heat in compact systems Low contact bounce and reliable mechanical life support steady longterm operation Sealed construction provides robust performance in environments with dust, moisture, or vibration Applications and use scenarios Test and measurement equipment: routing lowlevel signals with isolation in breadboards, test rigs, and instrumentation panels Data acquisition and laboratory consoles: switching sensor signals and calibration paths without introducing noise or drift Industrial automation and control panels: compact signal routing for sensors, indicators, and diagnostic circuits in tight enclosures Notes The exact performance, material choices, and packaging depend on the specific model and manufacturer; consult datasheets for coil voltage options, contact configurations, and material details to select the relay for your application.