COTO TECHNOLOGY
55 Dupont Drive, Providence, RI 02907-3105 / (401) 943-2686 Fax (401) 942-0920
11
Model Number
Parameters
2904
2
2911
2
x
2920
2,3
Test Conditions
Units
1 Form A
1 Form C
Wet
1 Form A Hg
COIL RESISTANCE
Nom. Coil Voltage
Coil Resistance
Operate Voltage
Release Voltage
VDC
5 12
370 1500
3.8 9.0
0.4 1.0
5 12
230 1500
3.8 9.0
0.4 1.0
5 12
75 250
3.8 9.0
0.4 1.0
+/- 10%, 25° C
Must Operate by
Must Release by
VDC - Max.
VDC - Min.
CONTACT RATING
Switching Voltage
Switching Current
Carry Current
Contact Rating
Life Expectancy-Typical
1
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
Amps
Watts
x 10
6
Ops.
200
0.5
1.5
10
500
150
0.25
1.0
3
100
500
1.0
2.0
50
1000
Static Contact
Resistance (max. init.)
50mV, 10mA
0.100
0.150
0.075
Dynamic Contact
Resistance (max. init.)
0.5V, 50mA
at 100 Hz, 1.5 msec
0.200
0.200
0.100
RELAY SPECIFICATIONS
Insulation Resistance
(minimum)
Between all Isolated Pins
at 100V, 25°C, 40% RH
pF
pF
x
10
12
x
10
11
x
10
10
Capacitance - Typical
Across Open Contacts
Shield Floating
Shield Guarding
1.0
0.3
2.0
1.0
1.4
0.2
Dielectric Strength
(minimum)
Between Contacts
Contacts to Shield
Contacts/Shield to Coil
VDC/peak AC
VDC/peak AC
VDC/peak AC
350
350
1500
200
200
1500
1000
1000
1500
Operate Time - including
bounce - Typical
At Nominal Coil Voltage,
30 Hz Square Wave
msec.
0.5
1.0
1.5
Release Time - Typical
Zener-Diode Suppression
4
msec.
0.1
2.0
1.0
2900 Series/Microminiature Reed Relays
Notes:
1
Consult factory for life expectancy at other switching loads.
2
Model 2904, 2911 and 2920, pin #7 is tied to optional electrostatic
shield, pins #6 & #7 are tied to optional coaxial shield.
3
Model 2920 has Hg wet contacts - position sensitive, must
be mounted within 30° of vertical plane. See schematic.
4
Consist of 20V Zener-Diode and 1N4002 diode in series,
connected in parallel with coil.
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
Top View:
Dot stamped on top of relay refers to pin #1 location
Grid = .1"x.1" (2.54mm x 2.54mm)