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KEMET SPST Through Hole Reed Switch 300 mA 110 V ac/dc OHD1-125M

Category Reed Switch Brand KEMET Condition New

Specifications

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

Key Features

  • SPST contact configuration for efficient switching applications.
  • Handles up to 300 mA switching current and 6 W maximum power.
  • Supports both AC and DC voltages up to 110 V.
  • Nickel Iron Alloy contacts provide high durability and reliability.
  • Designed for easy integration with wire terminals and through hole mount.
  • Wide operational temperature range from -20°C to 150°C.
  • Compact physical dimensions ensure suitability for space-constrained PCBs.
  • High environmental durability, dust, explosion, and corrosion-proof.

Product Description

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.

KEMET SPST Through Hole Reed Switch 300 mA 110 V ac/dc OHD1-125M
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Frequently Asked Questions

The maximum switching current for this model is 300 mA.

It supports both AC and DC voltages up to 110 V.

This model features a single pole single throw (SPST) contact configuration.

The dimensions are 18 mm in length, 5.5 mm in width, and 5.6 mm in depth.

It operates within a temperature range of -20°C to 150°C.

The contacts are made from Nickel Iron Alloy, which provides enhanced durability.

The maximum switching power is 6 W.

It complies with CSA, UL, TUV, and RoHS standards.

The thermal guard protection utilizes a proprietary magnet and Thermorite ferromagnetic material to facilitate high-speed switching and long operational life.

It is designed for through hole mounting, making it suitable for integration on printed circuit boards (PCBs).

Typical applications include atmospheric temperature detection, overheating monitoring of power transistors, and general appliances in industrial and electronic contexts.

The contact resistance is 150 mΩ.

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