COTO-3502-05-811
| Part # | COTO-3502-05-811 |
Download  | COTO-3502-05-811 |
3500 SERIES/LOW THERMAL EMF REED RELAYS
3500 Series Low Thermal EMF Reed Relays
e 3500 Series is ideally suited to the needs of Instrumentation, Data Acquisition and
Process Control. e specification tables allow you to select the appropriate relay for
your particular application.
Recommended for use in high accuracy DVM’s, Multi-
plexers 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.
3500 Series Features
u
Low ermal EMF: < 10 µV through < 0.5 µV with 50 nV stability
u
Patented Low ermal Design. U.S. Patent #4,084,142
u
Low power coils to ensure low thermal EMF
12
u
High Insulation Resistance – 10
Ω
u
Control/Signal isolation of 1500 VDC
u
High reliability, hermetically sealed contacts
u
Form A,
Dry or Hg Wetted contacts. High Dielectric Strength
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Epoxy coated steel shell provides magnetic shielding
RoHS compliant (except for 3520)
u
DIMENSIONS
in Inches (Millimeters)
1.20
(30.48)
.500
(12.7)
.500
(12.7)
.485 MAX
(12.32)
.485 MAX
(12.32)
.050
(1.27)
.050
.100
(2.54)
1.00
(1.27)
.200
(25.4)
.100
.125
(3.17)
(5.08)
(2.54)
.300
(7.62)
.026 DIA.
(0.66)
For Model
For Model
3501 & 3540
3502, 3520 & 3541
13
14
2
1
Bottom View
Ordering Information
XXXX-XX-X1X
Part Number
Model Number
Shielding Options
2
1=Electrostatic Shield
3501 3502 3520 3540 3541
Coil Voltage
05=5 volts
12=12 volts
Thermal EMF Rating
See available ratings in specification table.
1=<10µV Hg Wetted Only
9=<5µV Dry or Wetted
8=<3µV Dry Only
7=<1µV Dry Only
5=<0.5µV Dry Only
07082013
tel: (401)
943.2686
|
fax: (401)
942.0920
3501
2
3502
2
3520
2,3
3540
2
3541
2
MODEL NUMBER
Parameters
Test Conditions
Units
1 Form A
2 Form A
1 Form A
1 Form A
2 Form A
Hg Wetted
High Voltage
High Voltage
Individual
<5µV
<3µV
<1µV
<0.5µV
Differential
<5µV
<3µV
<1µV
<0.5µV
Differential
<10µV
Individual
<5µV
<3µV
–
–
Differential
Measured after
5 minutes at nominal
coil voltage
(Refer to Reed Relay
<5µV
<3µV
–
–
Thermal EMF Options
µV
<5µV
–
–
Technical Section for details)
COIL SPECS.
Nom. Coil Voltage
Coil Resistance
VDC
Ω
5
12
5
12
5
12
5
12
5 12
+/- 10%, 25° C
Must Operate by
Must Release by
350 2000
3.8 9.0
350 2000
3.8 9.0
200 850
3.8 9.0
0.4 1.0
250 1500
3.8 9.0
250 1500
3.8 9.0
Operate Voltage
Release Voltage
VDC – Max.
VDC – Min.
0.4 1.0
0.4 1.0
0.4 1.0
0.4 1.0
CONTACT RATINGS
Switching Voltage
Switching Current
Carry Current
Max DC/Peak AC Resist.
Max DC/Peak AC Resist.
Max DC/Peak AC Resist.
Max DC/Peak AC Resist.
Signal Level 1.0V, 10mA
Volts
Amps
200
0.5
1.5
10
200
0.5
1.5
10
500
1.0
500
0.5
2.0
10
500
0.5
2.0
10
Amps
2.0
Contact Rating
Life Expectancy-Typical
1
Watts
x 10
6
Ops.
28
500
100
1000
100
100
Static Contact
Resistance (max. init.)
50mV, 10mA
Ω
Ω
0.200
0.300
0.100
0.200
0.050
0.100
0.200
0.300
0.100
0.200
Dynamic Contact
Resistance (max. init.)
0.5V, 50mA
at 100 Hz, 1.5 msec
RELAY SPECIFICATIONS
Insulation Resistance
(minimum)
Between all Isolated Pins
at 100V, 25°C, 40% RH
Ω
10
12
10
12
10
12
10
12
10
12
Capacitance – Typical
Across Open Contacts
No Shield
Shield Guarding
pF
pF
3.0
1.9
1.7
0.2
1.7
0.2
3.0
1.9
1.7
0.2
Between Contacts
Contacts to Shield
Contacts/Shield to Coil
VDC/peak AC
VDC/peak AC
VDC/peak AC
700
1000
1500
350
1000
1500
1000
1000
1500
1500
1000
1500
1500
1000
1500
Dielectric Strength
(minimum)
Operate Time – including
bounce – Typical
At Nominal Coil Voltage,
msec.
0.75
0.1
0.75
0.1
2.0
1.0
1.0
0.2
1.0
0.2
30 Hz Square Wave
Release Time – Typical
msec.
13
5
1
13
9
5 1
13
9
5
1
13
5 1
13
9
5 1
Top View
4
:
Dot stamped on top of relay refers to pin #1 location
Grid = .1”x.1”
(2.54mm x 2.54mm)
UP
Notes:
10
2
6
6
2
12
4
12
4
10
6
2
10
1
Consult factory for life expectancy at other switching loads.
2
Models 3501 and 3540, optional electrostatic shield is tied to pin #5.
Models 3502, 3520 and 3541, optional electrostatic shield is tied to pin #13.
3
Model 3520 has Hg wetted contacts – position sensitive, must be mounted within 30° of vertical plane.
See schematic. Hg content per cap-
sule: Form A, 0.04 grams.
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 specified.
Vibration:
20 G’s to 2000 Hz;
Shock:
50 G’s
07082013
COTO TECHNOLOGY, INC.
