Coto 2204 Series

  • Coto Technology

Product Features

  • Reed relays
  • High insulation resistance of 1012Ω minimum
  • Switching current 0.5A
  • Optional coaxial or electrostatic shield
  • Temperature range −20°C to +85°C


  • Compliant

The 2204 series reed relays from Coto features coil voltage options of 5VDC and 12VDC with optional electrostatic shield for reducing capacitive coupling, coaxial shielding for 50Ω impedance. The 2200 series from Coto are considered ideal for high speed switching compared to electromechanical relays, very small footprint of 0.17in2. They have hermetically sealed contacts for long life and their epoxy coated steel shell provides magnetic shielding. The 2204 series is ideally suited to the needs of automated test equipment and RF requirements, specifically engineered for OEM designs and maintenance of existing production fixtures.

  • Reed relay
  • Nominal coil voltage options available 5VDC or 12VDC
  • Contact form of 1A
  • Switching voltage of 200V
  • Dielectric strength of 250VDC
  • Contact rating 10W
  • Switching current 0.5A
  • No shielding, electrostatic shielding or coaxial shielding options available
  • Temperature range −20°C to +85°C
  • Encapsulated PICO package

Typical Applications include:

  • Automated test equipment
  • RF requirements

For further information regarding coil specifications, contact ratings and relay specifications please see the datasheet on the Technical Library tab.

Calculators and Convertors

Work out what you need for your project. Go to calculators and convertors

Contact us if you need your items quicker or need more than in stock.


Weight 0.00000 kg
Dimensions 6.23 x 5.33 x 20.57mm
Coil Voltage


Contact Form

Contact Rating

Dielectric Strength

Series / Model


, ,

Switching Voltage

RoHS Compliant Product – Coto

This product is available fully compliant to the RoHS EU directive 2011/65/EU.

Coto 2200-2301, 2200-2302, 2204 and 2211 Series Technical Library

We are pleased to provide you with a range of additional content including videos, product datasheets, case studies, white papers and application notes for your reference. Please see below for the latest content available:

  Coto 2200-2301, 2200-2302, 2204 and 2211 reed relay series datasheet
  Coto Technology sensors and switches product sheet
  Coto RedRock™ TMR magnetic sensor product catalogue
  Coto Technology reed relay and reed switch selector charts
  CotoMOS® MOSFET relay selector chart
White Papers
  Testing reed relays and reed switches for reliability white paper
  Life expectancy for reed relays in high temperature environments white paper
Application Notes – TMR Sensors
  The importance of magnet protection within harsh environments application note
  Interfacing the Coto Technology RedRock™ RR110 to an ADC using a low power analog interface circuit application note
  Ready for take-off using the RedRock™ RR130 in wildlife tracking devices application note
  Size matters in capsule endoscopy application note
  The evolution of magnetic sensing technology: from hall effect to tunneling magnetoresistance (TMR) application note
  Using RedRock™ TMR magnetic sensors RR121 for speed and direction estimation in rotating systems application note
  Improving a simple 3-wire level sensor assembly by using the RedRock™ RR131 TMR digital switch application note
  Modernising security systems with TMR for higher reliability, wider sensing range and long battery life application note
  How to replace a 2-wire reed switch with a 3-wire sensor application note
Application Notes – CotoMOS® MOSFETs
  CotoMOS® technical and applications information application note
  Applications of small signal relays in photovoltaic inverters application note
  Increasing the ampacity of the CotoMOS® CS128 opto-isolated SSR by parallel operation application note
  Output muting in headphone amplifiers and portable speakers with negligible harmonic distortion using CotoMOS® relays application note
  Dual-rail battery switching using CotoMOS® relays in portable headphone amplifiers and portable powered speakers application note
  RR110 ultra low power ‘wake up’ application note
  How to increase your current capacity of 6-pin CotoMOS® solid state MOSFET relays by up to 100% application note
Application Notes – Classic Reed Relays
  Reed relays technical and application information application note
  Applications of small signal relays in photovoltaic inverters application note
  If it ain’t broke fix it application note
  Leadform follows function in RF reed relay design application note
  The heat is on when you test at 125°C (2970 Series) application note
  Optimising cable tester switching architecture using the Coto Technology 9104-0022 high voltage reed relay application note
  Best practices for applying Coto Technology’s 9852 Form C reed relay application note
  Coto Technology’s 9814 reed relay application note
Application Notes – Classic Reed Switches
  Reed switches technical and applications information application note
  Reliable reed switching best practices for normally closed applications application note
  Nobody said designing utility meters was easy application note
  Rules of attraction for reliable reed switch-magnet applications application note
  Liquid level sensing using reed switch technology application note
  Liquid level sensing using reed switch technology application note (detailed)
  The importance of magnet protection within harsh environments application note
  Reed switch life characteristics under different levels of capacitive loading application note
  Coto DYAD switch contact style application note
  CT10-G4’s rugged lead-frame design is a feature and a benefit application note

  • Coto Technology

Coto 2204 Series

Please be advised that due to the ongoing supply issues with raw materials affecting the global electronics industry, as well as an increase in orders received by our manufacturing partners, a large number of products are facing increased lead times in recent months. For the latest lead time and stock availability, please contact one of our engineers who will be happy to discuss lead times further and the potential for alternative parts.