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| Country of Origin | Japan |
|---|---|
| Brand | KEMET |
| Length | 18mm |
| Model | OHD1-125M |
| Depth | 5.6mm |
| Width | 5.5mm |
| Mount Type | Through Hole |
| Contact Material | Nickel Iron Alloy |
| Series | OHD Thermal Guard |
| Maximum Switching Current | 300mA |
| Maximum Operating Temperature | 150°C |
| Contact Configuration | SPST |
| Minimum Operating Temperature | -20°C |
| Terminal type | Wire |
| Contact Resistance | 150mΩ |
| Maximum Switching Power | 6W |
| Standards/Approvals | CSA, UL, TUV, RoHS |
| Maximum Switching Voltage | 110V ac/dc |
The KEMET OHD1-125M SPST Through Hole Reed Switch is engineered to deliver reliable performance for switching applications in a broad variety of industrial, laboratory, and electronic environments. With its single pole single throw contact configuration, this reed switch is ideal for applications requiring on/off control or monitoring in circuits with up to 300 mA of current and 110 V AC or DC operation.
The reed switch utilizes Nickel Iron Alloy contacts for enhanced durability and low contact resistance, ensuring dependable signal transmission and robust physical endurance. Its wire terminal and through hole mounting make it suitable for integration on printed circuit boards (PCBs) and modular assemblies. The compact form factor (18 mm length, 5.5 mm width, 5.6 mm depth) allows it to fit in space-constrained designs without compromising switching efficiency.
Key features include thermal guard protection via a proprietary magnet and Thermorite ferromagnetic material, which transitions to paramagnetic at certain temperatures, facilitating high-speed switching and long operational life. The OHD1-125M is compatible with extremely low (0.1 mW or less) signals up to high power (6 W), supporting applications from sensitive detection to moderate load switching.
In terms of environmental resilience, it offers high durability, dust, explosion, and corrosion proof construction, and an operating temperature range from -20°C to 150°C. Industry approvals include CSA, UL, TUV, and RoHS standards, making it suitable for regulated environments.
Typical applications include atmospheric temperature detection, overheating monitoring of power transistors, power modules, room/industrial heaters, hot gas heaters, amplifiers, motors, hard drives, floppy drives, and other general appliances in industrial, electronic, HVAC, laboratory, and manufacturing contexts.
The OHD1-125M’s simple circuit design, fast response, and compact build make it a staple in modern control systems where reliable switching, environmental resilience, and precise sensing are paramount.
Browse more Reed Switches and explore high-performance products from KEMET at EnvMart.
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