Reed Relays 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.

	3600 Series Features u Low Thermal EMF: < 5 µV through < 0.5 µV with 50nV stability. u Patented Low Thermal Design. U.S. Patent #4,084,142. u Low power coils to ensure low thermal EMF. u High Insulation Resistance - 10¹²W u Control/Signal isolation of 1500 VDC u High speed switching compared to electromechanical relays. u High reliability, hermetically sealed contacts. u Various Form A contacts. High Dielectric Strength. u Epoxy coated steel shell provides magnetic shielding. u Electrostatic shield for reducing capacitive coupling.


			3600 Series Mechanicals


	3600 Series Specifications Table

Model Number			3602 2 Form A	3650⁴3 Form A	3660²3 Form A
Parameters	Test Conditions	Units
THERMAL EMF OPTIONS	Measured after 5 minutes at nominal coil voltage Refer to Reed Relay Technical Section for Details	mV	Differential <5mV <3mV <1mV <0.5mV	Differential <5mV <3mV <1mV <0.5mV	Differential <5mV <3mV <1mV <0.5mV
COIL SPECS.
Nom. Coil Voltage		VDC	5 12	5 12	5 12
Coil Resistance	+/- 10%, 25° C	W	350 2000	350 2000	350 2000
Operate Voltage	Must Operate by	VDC - Max.	3.8 9.0	3.8 9.0	3.8 9.0
Release Voltage	Must Release by	VDC - Min.	0.4 1.0	0.4 1.0	0.4 1.0
CONTACT RATINGS
Switching Voltage	Max DC/Peak AC Resist.	Volts	150	150	150
Switching Current	Max DC/Peak AC Resist.	Amps	0.25	0.25	0.25
Carry Current	Max DC/Peak AC Resist.	Amps	1.5	1.5	1.5
Contact Rating	Max DC/Peak AC Resist.	Watts	5	5	5
Life Expectancy-Typical ¹	Signal Level 1.0V, 1mA	x 10⁶ Ops.	500	500	500
Static Contact Resistance (max. init.)	50mV, 10mA	W	0.100	0.100	0.100
Dynamic Contact Resistance (max. init.)	0.5V, 50mA at 100 Hz, 1.5 msec	W	0.200	0.200	0.200
RELAY SPECIFICATIONS
Insulation Resistance (minimum)	Between all Isolated Pins at 100V, 25°C, 40% RH	W	x 10¹²	x 10¹²	x10¹²
Capacitance - Typical Across Open Contacts	Shield Floating Shield Guarding	pF pF	1.2 0.2	1.2 0.2	1.2 0.2
Contact to Shield	Contacts Open Shield & Coil Tied Common	pF pF	2.5 2.5	2.5 2.5	2.5 2.5
Dielectric Strength (minimum)	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 Suppression³	msec.	0.1	0.1	0.1
			3602 2 Form A	3650⁴3 Form A	3660²3 Form A


		Top View: Dot stamped on top of relay refers to pin #1 location Grid = .1"x.1" (2.54mm x 2.54mm)

Get It In .PDF Format

	Notes: ¹Consult factory for life expectancy at other switching loads. ²Model 3660: Reed switch between pins #9 & #10 is not low thermal and is not tied in common with the electrostatic shield. ³Consists of 56V Zener diode and 1N4148 diode in series, connected in parallel with coil. ⁴Model 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.




		Environmental Ratings 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


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