DIMENSIONS
in Inches (Millimeters)
3600 Series Low Thermal EMF Reed Relays
e 3600 Series is ideally suited to the needs of Instrumentation, Data Acquisition,
and Process Control. e specication 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 dier from the selection
options, please consult Coto’s Factory to discuss a custom reed relay.
3600 Series Features
u
Low ermal EMF: < 5 µV through < 0.5 µV with 50 nV stability
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Patented Low ermal Design. U.S. Patent #4,084,142
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Low power coils to ensure low thermal EMF
u
High Insulation Resistance - 10
12
Ω
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Control/Signal isolation of 1500 VDC
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High speed switching compared to electromechanical relays
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High reliability, hermetically sealed contacts
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Various Form A contacts. High Dielectric Strength
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Epoxy coated steel shell provides magnetic shielding
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Electrostatic shield standard for reducing capacitive coupling
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RoHS compliant
3600 SERIES/LOW THERMAL EMF REED RELAYS
1
3
5
7
9
2
4
6
8
10
1.20
1.000
.660
.475
.050
.115 MIN
.026 DIA.
(30.48) (16.76)
(25.4)
(0.66)
(1.27)
(12.06)
(2.92)
.100
Ordering Information
Part Number XXXX XX X--2
Model Number
3602 3650 3660
Coil Voltage
05=5 volts
12=12 volts
Thermal EMF Rating
See available ratings in specification table.
9=<5µV
8=<3µV
7=<1µV
5=<0.5µV
Bottom View
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22 | page
MODEL NUMBER 3602 3650336602
Parameters Test Conditions Units 2 Form A 3 Form A 3 Form A
Thermal EMF Options
Measured after
5 minutes at nominal
coil voltage
(Refer to Reed Relay
Technical Section for details)
µV
Individual
<5µV
<3µV
<1µV
<0.5µV
Differential
<5µV
<3µV
<1µV
<0.5µV
Differential
<5µV
<3µV
<1µV
<0.5µV
COIL SPECS.
Nom. Coil Voltage VDC 512 512 512
Coil Resistance +/- 10%, 25° C Ω350 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-Typical1Signal Level 1.0V, 10mA x 106 Ops. 500 500 500
Static Contact
Resistance (max. init.) 50mV, 10mA Ω0.100 0.100 0.100
Dynamic Contact
Resistance (max. init.)
0.5V, 50mA
at 100 Hz, 1.5 msec Ω0.200 0.200 0.200
RELAY SPECIFICATIONS
Insulation Resistance
(minimum)
Between all Isolated Pins
at 100V, 25°C, 40% RH Ω1012 1012 1012
Capacitance - Typical
Across Open Contacts
Contact to Shield
Shield Floating
Shield Guarding
Contacts Open
Shield & Coil Tied Common
pF
pF
pF
pF
1.2
0.2
2.5
2.5
1.2
0.2
2.5
2.5
1.2
0.2
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 msec. 0.1 0.1 0.1
Top View:
Grid = .1”x.1” (2.54mm x 2.54mm)
Notes:
1 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 Model 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
All electrical parameters measured at 25°C unless otherwise specied.
Vibration: 20 G’s to 2000 Hz; Shock: 50 G’s
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3
4
5
6
79
810
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2
3
4
5
6
79
810
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2
3
4
5
6
79
8
10
COTO TECHNOLOGY, INC.
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