3600 Series/Low Thermal EMF Reed Relays

The 3600 Series is ideally suited to the needs of Instrumentation, Data Acquisition, and Process Control. The specification tables allow you to select the appropriate relay for your particular application. Recommended for use in Scanners, Multiplexers and Digital or Analog Multipoint Recorders. If your requirements differ from the selection options, please consult Coto’s Factory to discuss a custom reed relay.  Download Datasheet

3600 Series Features

  • Low Thermal EMF: < 5 µV through < 0.5 µV with 50 nV stability
  • Patented Low Thermal Design. U.S. Patent #4,084,142
  • Low power coils to ensure low thermal EMF
  • High Insulation Resistance - 1012Ω
  • Control/Signal isolation of 1500 VDC
  • High speed switching compared to electromechanical relays
  • High reliability, hermetically sealed contacts
  • Various Form A contacts. High Dielectric Strength
  • Epoxy coated steel shell provides magnetic shielding
  • Electrostatic shield standard for reducing capacitive coupling
  • RoHS compliant


In Inches (Millimeters)
  • 3600 mechanicals
  • 3600 mechanicals
  • 3600 mechanicals


Top View:
Grid = .1”x.1” (2.54mm x 2.54mm)

  • 3600 schematic
  • 3600 schematic
  • 3600 schematic

1Consult factory for life expectancy at other switching loads.
2Model 3660: Reed switch between pins #9 & #10 is not low thermal and is tied in common with the electrostatic shield.
3Model 3650: Reed switch between pins #3 & #4 is not low thermal and is not tied in common with the electrostatic shield. Pin numbers for reference only.

Storage Temp: -35°C to +100°C; Operating Temp: -20°C to +85°C; Solder Temp: 270°C max; 10 sec. max
All electrical parameters measured at 25°C unless otherwise specified.
Vibration: 20 G’s to 2000 Hz; Shock: 50 G’s

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