COTO-2920-05-111

2900 SERIES REED RELAYS  

2900 Series Reed Relays  

Ideally suited to the needs of Automated

T

e

st Equipment and RF requirements. e  

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  

2

u

Very small (0.20 in ),

 

high reliability reed relays  

12  

u

High Insulation Resistance – 10

 

Ω

offered on 2904  

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  

u

u

u

u

u

digital pulses  

u

RoHS compliant (except for 2920)  

DIMENSIONS  

in Inches (Millimeters)  

.250  

(6.35)  

.820  

(20.82)  

(7.11)  

.280  

.020  

(0.51)  

.500  

(12.7)  

.100  

(2.54)  

.125  

(3.18)  

.700  

(17.78)  

.022 Dia. pins  

(0.56)  

4

5

1 2  

3

6

8

7

Bottom View  

Ordering Information  

29XX-XX-XX1  

Part Number  

Shielding Options

2  

0=No Shield  

1=Electrostatic Shield  

2=Co-axial Shield  

Model Number  

2904  

2911  

Coil Voltage  

05=5 volts  

12=12 volts  

2920  

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)  

02272015  

tel: (401)

 

943.2686  

|

fax: (401)

 

942.0920  

2904

2  

2911

2  

2920

2,3  

MODEL NUMBER  

Parameters  

Test Conditions  

Units  

1 Form A  

1 Form C  

1Form A  

Hg Wetted  

COIL SPECS.  

Nom. Coil Voltage  

Coil Resistance  

VDC  

Ω

5

12  

5

12  

5 12  

+/- 10%, 25° C  

Must Operate by  

Must Release by  

370 1500  

3.8 9.0  

0.4 1.0  

230 1500  

3.8 9.0  

75 425  

3.8 9.0  

0.4 1.0  

Operate Voltage  

Release Voltage  

VDC – Max.  

VDC – Min.  

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  

150  

0.25  

1.0  

500  

1.0  

Amps  

2.0  

Contact Rating  

Life Expectancy-Typical

1  

Watts  

x 10

6

Ops.  

3

50  

500  

100  

1000  

Static Contact  

Resistance (max. init.)  

50mV, 10mA  

Ω

Ω

0.100  

0.200  

0.150  

0.200  

0.075  

0.100  

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

11  

10

10  

Capacitance – Typical  

Across Open Contacts  

Shield Floating  

Shield Guarding  

pF  

pF  

1.0  

0.3  

2.0  

1.0  

1.4  

0.2  

Between Contacts  

Contacts to Coil  

Contacts/Shield to Coil  

VDC/peak AC  

VDC/peak AC  

VDC/peak AC  

350  

350  

1500  

200  

200  

1500  

1000  

1000  

1500  

Dielectric Strength  

(minimum)  

Operate Time – including  

bounce – Typical  

At Nominal Coil Voltage,  

30 Hz Square Wave  

msec.  

0.5  

0.1  

1.0  

2.0  

1.5  

1.0  

Release Time – Typical  

msec.  

Top View:  

Grid = .1”x.1”

 

(2.54mm x 2.54mm)  

5

6

4

3

5

6

4

3

5

6

4

3

UP  

7

8

2

1

7

8

2

1

7

8

2

1

Notes:  

1

Consult factory for life expectancy at other switching loads.  

2

3

Model 2904, 2911 and 2920, pin #7 is tied to optional electrostatic shield, pins #6 & #7 are tied to optional coaxial shield.  

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  

02272015  

COTO TECHNOLOGY, INC.