ETC 2920-12-11I

2900 Series/Microminiature Reed Relays
M ICROMINIATURE 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 application. Slightly larger than the 2200
Series; these relays provide maximum versatility with options such as
electrostatic and coaxial shielding. If your requirements differ, please
consult your local representative or Coto’s Factory.
2900 SERIES FEATURES
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Very small (0.20 in2), high reliability reed relays.
High Insulation Resistance - 10 12 Ω offered on some models.
High speed switching compared to electromechanical relays.
Hermetically sealed contacts for long life.
Epoxy coated steel shell provides magnetic shielding.
Optional Electrostatic Shield for reducing capacitive coupling.
Optional Coaxial Shield for 50 Ω impedance and switching of fast
rise time digital pulses.
Dimensions in Inches (Millimeters)
Bottom
View
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2900 Series/Microminiature Reed Relays
Model Number
Par ameter s
COIL RESISTANCE
Nom. Coil Voltage
Coil Resistance
Operate Voltage
Release Voltage
CONTACT RATING
Switching Voltage
Switching Current
Carry Current
Contact Rating
Life Expectancy-Typical 1
Test Conditions
2904 2
2911 2
Units
1 For m A
1 For m C
VDC
5
370
3.8
0.4
5
230
3.8
0.4
12
1500
9.0
1.0
12
1500
9.0
1.0
x 2920 2,3
1 For m A
Wet
5
75
3.8
0.4
12
250
9.0
1.0
+/- 10%, 25° C
Must Operate by
Must Release by
Ω
VDC - Max.
VDC - Min.
Max DC/Peak AC Resist.
Max DC/Peak AC Resist.
Max DC/Peak AC Resist.
Max DC/Peak AC Resist.
Volts
Amps
Amps
Watts
x 106 Ops.
200
0.5
1.5
10
150
0.25
1.0
3
500
1.0
2.0
50
500
100
1000
Signal Level 1.0V, 10mA
Hg
Static Contact
Resistance (max. init.)
50mV, 10mA
Ω
0.100
0.150
0.075
Dynamic Contact
Resistance (max. init.)
0.5V, 50mA
at 100 Hz, 1.5 msec
Ω
0.200
0.200
0.100
x 1012
x 1011
x 1010
1.0
0.3
2.0
1.0
1.4
0.2
RELAY SPECIFICATIONS
Insulation Resistance
(minimum)
Between all Isolated Pins
at 100V, 25°C, 40% RH
Capacitance - Typical
Across Open Contacts
Shield Floating
Shield Guarding
Ω
pF
pF
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
Dielectric Strength
(minimum)
Top View:
Dot stamped on top of relay refers to pin #1 location
Grid = .1"x.1" (2.54mm x 2.54mm)
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
COTO TECHNOLOGY 55 Dupont Drive, Providence, RI 02907-3105 / (401) 943-2686 Fax (401) 942-0920
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