2900 SERIES REED RELAYS
2900 Series Reed Relays
Ideally suited to the needs of Automated Test Equipment and RF requirements. The
specification tables allow you to select the appropriate relay for your particular applica-
tion. Slightly larger than the 2200 Series; these relays provide maximum versatility
with options such as a Form C with electrostatic or co-axial shielding. If your require-
ments differ, please consult your local representative or Coto’s Factory.
2900 Series Features
u
Very small (0.20 in
2
), high reliability reed relays
u
High Insulation Resistance - 10
12
Ω
offered on 2904
u
High speed switching compared to electromechanical relays
u
Hermetically sealed contacts for long life
u
Epoxy coated steel shell provides magnetic shielding
u
Optional Electrostatic Shield for reducing capacitive coupling
u
Optional Coaxial Shield for 50Ω impedance and switching of fast rise time
digital pulses
u
RoHS compliant (except for 2920)
DIMENSIONS
in Inches (Millimeters)
.820
(20.82)
.250
(6.35)
.280 (7.11)
.500
(12.7)
.700
(17.78)
1 2
3 4
.125
(3.18)
.020
(0.51)
.022 Dia. pins
(0.56)
.100
(2.54)
8 7
Bottom View
6 5
Ordering Information
Part Number
Model Number
2904
2911
2920
Coil Voltage
05=5 volts
12=12 volts
29XX-XX-XX1
Shielding Options
2
0=No Shield
1=Electrostatic Shield
2=Co-axial Shield
Coil Options
1=Use for Model #2920 (5 & 12 volt coil)
3=Use for Model #2904 (12 volt coil) and for Model #2911 (5 & 12 volt coil)
4=Use for Model #2904 (5 volt coil)
07082013
tel: (401) 943.2686
|
fax: (401) 942.0920
MODEL NUMBER
Parameters
COIL SPECS.
Nom. Coil Voltage
Coil Resistance
Operate Voltage
Release Voltage
+/- 10%, 25° C
Must Operate by
Must Release by
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
50mV, 10mA
0.5V, 50mA
at 100 Hz, 1.5 msec
Between all Isolated Pins
at 100V, 25°C, 40% RH
Shield Floating
Shield Guarding
Between Contacts
Contacts to Coil
Contacts/Shield to Coil
At Nominal Coil Voltage,
30 Hz Square Wave
VDC
Ω
VDC - Max.
VDC - Min.
Volts
Amps
Amps
Watts
x 10
6
Ops.
Ω
Ω
2904
2
Test Conditions
Units
1 Form A
2911
2
1 Form C
2920
2,3
1Form A
Hg Wetted
5 12
75 250
3.8 9.0
0.4 1.0
500
1.0
2.0
50
1000
0.075
0.100
5 12
370 1500
3.8 9.0
0.4 1.0
200
0.5
1.5
10
500
0.100
0.200
5 12
230 1500
3.8 9.0
0.4 1.0
150
0.25
1.0
3
100
0.150
0.200
CONTACT RATINGS
Switching Voltage
Switching Current
Carry Current
Contact Rating
Life Expectancy-Typical
1
Static Contact
Resistance (max. init.)
Dynamic Contact
Resistance (max. init.)
RELAY SPECIFICATIONS
Insulation Resistance
(minimum)
Capacitance - Typical
Across Open Contacts
Dielectric Strength
(minimum)
Operate Time - including
bounce - Typical
Release Time - Typical
Ω
pF
pF
VDC/peak AC
VDC/peak AC
VDC/peak AC
msec.
msec.
Top View:
Grid = .1”x.1” (2.54mm x 2.54mm)
5
6
10
12
1.0
0.3
350
350
1500
0.5
0.1
4
3
5
6
10
11
2.0
1.0
200
200
1500
1.0
2.0
4
3
UP
5
6
10
10
1.4
0.2
1000
1000
1500
1.5
1.0
4
3
7
8
2
1
7
8
2
1
7
8
2
1
Notes:
1
2
Consult factory for life expectancy at other switching loads.
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 wetted contacts - position sensitive, must be mounted within 30° of vertical plane. See schematic.
Hg Content per capsule: 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
For most recent data visit www.cotorelay.com
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