Coto 3502 Series

Coto 3502 Series

The 3502 surface-mount low thermal EMF reed relay series from Coto features available coil voltage options of 5VDC and 12VDC with a switching voltage of 200V and switching current of 0.5A. The 3502 is designed to offer a low thermal EMF range from <0.5µV to <5µV. An epoxy coated steel shell provides magnetic shielding, with hermetically sealed contacts for long life and high reliability. The 3502 series is ideally suited to the needs of instrumentation, data acquisition and process control.

  • Surface-mount low thermal EMF reed relay
  • Nominal coil voltage options of 5VDC and 12VDC
  • Contact form of 2A
  • Switching voltage of 200V
  • Dielectric strength of 350VDC
  • Thermal EMF options of <0.5µV, <1µV, <3µV and <5µV available
  • Contact rating 10W
  • Switching current 0.5A
  • High insulation resistance of 1012Ω minimum
  • Operating temperature range −20°C to +85°C
  • Potted package size

Typical Applications include:

  • High accuracy DVM's
  • Multiplexers
  • Digital or analog multi-point recorders

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

Specifications
Additional Features
  • Surface-mount low thermal EMF reed relays
  • High insulation resistance of 1012Ω minimum
  • Switching current 0.5A
  • Low thermal EMF range from <0.5µV to <5µV
  • Epoxy coated steel shell provides magnetic shielding
  • Operating temperature −20°C to +85°C
Coil Voltage
  • 5VDC
  • 12VDC
Contact Form 2A
Contact Rating 10W
Dielectric Strength 350VDC
Maximum Voltage Rating 200V (Switching)
Package/Size Potted package

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:

 

 

DOCUMENTATION
PDF Document Coto 3501, 3502, 3520, 3540 and 3541 reed relay series datasheet
PDF Document Coto Technology sensors and switches product sheet
PDF Document Coto RedRock™ TMR magnetic sensor product catalogue
PDF Document Coto Technology reed relay and reed switch selector charts
PDF Document CotoMOS® MOSFET relay selector chart
White Papers
PDF Document Testing reed relays and reed switches for reliability white paper
PDF Document Life expectancy for reed relays in high temperature environments white paper
Application Notes - TMR Sensors
PDF Document The importance of magnet protection within harsh environments application note
PDF Document Interfacing the Coto Technology RedRock™ RR110 to an ADC using a low power analog interface circuit application note
PDF Document Ready for take-off using the RedRock™ RR130 in wildlife tracking devices application note
PDF Document Size matters in capsule endoscopy application note
PDF Document The evolution of magnetic sensing technology: from hall effect to tunneling magnetoresistance (TMR) application note
PDF Document Using RedRock™ TMR magnetic sensors RR121 for speed and direction estimation in rotating systems application note
PDF Document Improving a simple 3-wire level sensor assembly by using the RedRock™ RR131 TMR digital switch application note
PDF Document Modernising security systems with TMR for higher reliability, wider sensing range and long battery life application note
PDF Document How to replace a 2-wire reed switch with a 3-wire sensor application note
Application Notes - CotoMOS® MOSFETs
PDF Document CotoMOS® technical and applications information application note
PDF Document Applications of small signal relays in photovoltaic inverters application note
PDF Document Increasing the ampacity of the CotoMOS® CS128 opto-isolated SSR by parallel operation application note
PDF Document Output muting in headphone amplifiers and portable speakers with negligible harmonic distortion using CotoMOS® relays application note
PDF Document Dual-rail battery switching using CotoMOS® relays in portable headphone amplifiers and portable powered speakers application note
PDF Document RR110 ultra low power 'wake up' application note
PDF Document 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
PDF Document Reed relays technical and application information application note
PDF Document Applications of small signal relays in photovoltaic inverters application note
PDF Document If it ain't broke fix it application note
PDF Document Leadform follows function in RF reed relay design application note
PDF Document The heat is on when you test at 125°C (2970 Series) application note
PDF Document Optimising cable tester switching architecture using the Coto Technology 9104-0022 high voltage reed relay application note
PDF Document Best practices for applying Coto Technology's 9852 Form C reed relay application note
PDF Document Coto Technology's 9814 reed relay application note
Application Notes - Classic Reed Switches
PDF Document Reed switches technical and applications information application note
PDF Document Reliable reed switching best practices for normally closed applications application note
PDF Document Nobody said designing utility meters was easy application note
PDF Document Rules of attraction for reliable reed switch-magnet applications application note
PDF Document Liquid level sensing using reed switch technology application note
PDF Document Liquid level sensing using reed switch technology application note (detailed)
PDF Document The importance of magnet protection within harsh environments application note
PDF Document Reed switch life characteristics under different levels of capacitive loading application note
PDF Document Coto DYAD switch contact style application note
PDF Document CT10-G4's rugged lead-frame design is a feature and a benefit application note

 

 

 

VIDEOS
Coto Technology Gen 2.0 TMR sensors demo board overview

Coto Technology Applications Engineer, Tony Parakka, provides a peek at Coto’s newest 2.0 Generation demo board featuring RedRock™ TMR magnetic sensor products: RR111 (Analog Output); RR120 (Digital Unipolar Sensor); RR121 (Bipolar Digital Latching) and RR121 (Digital Omnipolar). This video serves as a basic overview of the different products.
VIDEOS
Engineering Discussion: TMR analog output sensor RR111

Coto Technology Applications Engineer, Tony Parakka, provides a peek at Coto’s newest 2.0 Generation demo board featuring RedRock™ TMR magnetic sensor products: RR111 (Analog Output); RR120 (Digital Unipolar Sensor); RR121 (Bipolar Digital Latching) and RR121 (Digital Omnipolar). This video serves as a basic overview of the different products.

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

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