3600 Series/Low Thermal EMF Reed Relays L OW 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. Refer to page 41 for Thermal EMF test methods. 3600 SERIES FEATURES u u u u u u u u u u Low Thermal EMF: < 5 µV through < 0.5 µV with 50 nV stability. Patented Low Thermal Design. Patent #4,084,142. Low power coils to ensure low thermal EMF. High Insulation Resistance - 1012 Ω 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 for reducing capacitive coupling. Dimensions in Inches (Millimeters) Bottom View 14 Catch Us on the Web! www.cotorelay.com E-Mail us: [email protected] 3600 Series/Low Thermal EMF Reed Relays Model Number Parameters THERMAL EMF OPTIONS COIL SPECS. Nom. Coil Voltage Coil Resistance Operate Voltage Release Voltage Test Conditions Units Measured after 5 minutes at nominal coil voltage Refer to Reed Relay Technical Section for Details µV 3602 2 Form A x36504 x36602 3 Form A 3 Form A Differential <5µV <3µV <1µV <0.5µV Differential <5µV <3µV <1µV <0.5µV Differential <5µV <3µV <1µV <0.5µV 5 350 3.8 0.4 5 350 3.8 0.4 5 350 3.8 0.4 +/- 10%, 25° C Must Operate by Must Release by VDC Ω VDC - Max. VDC - Min. Max DC/Peak AC Resist. Max DC/Peak AC Resist. Max DC/Peak AC Resist. Max DC/Peak AC Resist. Volts Amps Amps Watts 150 0.25 1.5 5 150 0.25 1.5 5 150 0.25 1.5 5 Signal Level 1.0V, 1mA x 10 Ops. 6 500 500 500 50mV, 10mA Ω 0.100 0.100 0.100 0.5V, 50mA at 100 Hz, 1.5 msec Ω 0.200 0.200 0.200 Between all Isolated Pins at 100V, 25°C, 40% RH Shield Floating Shield Guarding Contacts Open Shield & Coil Tied Common Ω pF pF pF pF x 10 1.2 0.2 x 10 1.2 0.2 x 10 1.2 0.2 2.5 2.5 2.5 2.5 2.5 2.5 Between Contacts Contacts to Shield Contacts/Shield to Coil VDC/peak AC VDC/peak AC VDC/peak AC 250 1000 1500 250 1000 1500 250 1000 1500 Operate Time - including bounce - Typical At Nominal Coil Voltage, 30 Hz Square Wave msec. 0.75 0.75 0.75 Release Time - Typical Zener-Diode Suppression 3 msec. 0.1 0.1 0.1 CONTACT RATINGS Switching Voltage Switching Current Carry Current Contact Rating 1 Life Expectancy-Typical Static Contact Resistance (max. init.) Dynamic Contact Resistance (max. init.) RELAY SPECIFICATIONS Insulation Resistance (minimum) Capacitance - Typical Across Open Contacts Contact to Shield Dielectric Strength (minimum) 12 2000 9.0 1.0 12 12 2000 9.0 1.0 12 12 2000 9.0 1.0 12 Top View: Dot stamped on top of relay refers to pin #1 location Grid = .1"x.1" (2.54mm x 2.54mm) Notes: Environmental Ratings 1 Storage Temp: -35°C to +100°C; Operating Temp: -20°C to +85°C Solder Temp: 270°C max; 10 sec. max The operate and release voltage and the coil resistance are specified at 25°C. These values vary by approximately 0.4%/°C as the ambient temperature varies. Vibration: 20 G’s to 2000 Hz; Shock: 50 G’s Consult factory for life expectancy at other switching loads. 2 Model 3660: Reed switch between pins #9 & #10 is not low thermal and is tied in common with the electrostatic shield. 3 Consists of 20V Zener-diode and 1N4002 diode in series, connected in parallel with coil. 4 Model 3650: Reed switch between pins #7 & #8 is not low thermal and is not tied in common with the electrostatic shield. Pin numbers for reference only. COTO TECHNOLOGY 55 Dupont Drive, Providence, RI 02907-3105 / (401) 943-2686 Fax (401) 942-0920 15