CT05 Series Encapsulated Molded Reed Switch

The CT05 (See Datasheet) is a molded dry reed switch. It is single-pole, single throw (SPST) type, having normally open ruthenium contacts. The sensor is a double-ended type and may be actuated with an electromagnet, a permanent magnet or a combination of both. The device is designed for SMD mounting and is available in Gull Wing or J-lead configurations.

CT05 Series Features

  • Ideal for SMD pick and place
  • Tape and reel packaging
  • 5W rating
  • Rugged encapsulation
  • Excellent life and reliability
  • RoHS compliant


  • Proximity Sensing
  • Medical Applications
  • Hearing Aids
  • Pulse Counter


In Inches (Millimeters)
  • CT05 G1 Dimensions
  • CT05 J1 Dimensions
Coto Classic CT05


  • AT values measured using a Philips 10JK coil.
  • Surface mount component processing temperature: 500°F(260°C) max for 1 minute dwell time.
  • Temperature measured on leads where lead exits molded package.
CT05 order info

A complete part number is represented by the digits to the right of the CT05 series prefix followed by a suffix as shown below. EXAMPLE: CT05-3050-G1 is • a CT05 sensor (5mm encapsulated switch) • with a sensitivity range from 30 to 50AT • lead ends are formed according to the G1 version • CT05-XXXX (0001-1999) without a suffix is a customer special.

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