2911-05-321

**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 application. 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 requirements 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) 

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DIMENSIONS<br>in Inches (Millimeters)<br>.820 .250<br>(20.82) (6.35)<br>.280 (7.11)<br>.020<br>.500<br>(0.51)<br>(12.7) .100<br>.125<br>(2.54)<br>(3.18)<br>Ey .700 TAR .022 Dia. pins<br>(17.78) (0.56)<br>1 2 3 4<br>8 7 6 5<br>Bottom View<br>**----- End of picture text -----**<br>


Ordering Information Part Number 29XX-XX-XX1 Model Number Shielding Options[2] 2904 Coil Voltage 0=No Shield 2911 1=Electrostatic Shield 05=5 volts 2920 2=Co-axial Shield 12=12 volts in 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** 

## **MODEL NUMBER 2904[2] 2911[2] 2920[2,3] Parameters Test Conditions Units 1 Form A 1 Form C 1Form A Hg Wetted COIL SPECS.** Nom. Coil Voltage VDC 5 12 5 12 5 12 Coil Resistance +/- 10%, 25° C Ω 370 1500 230 1500 75 425 Operate Voltage Must Operate by VDC - Max. 3.8 9.0 3.8 9.0 3.8 9.0 Release Voltage Must Release by VDC - Min. 0.4 1.0 0.4 1.0 0.4 1.0 **CONTACT RATINGS** Switching Voltage Max DC/Peak AC Resist. Volts 200 150 500 ~~—_~~ Switching Current Max DC/Peak AC Resist. Amps 0.5 0.25 1.0 Carry Current Max DC/Peak AC Resist. Amps 1.5 1.0 2.0 ~~= =~~~ Contact Rating Max DC/Peak AC Resist. Watts 10 3 50 Life Expectancy-Typical[1] Signal Level 1.0V, 10mA x 10[6] Ops. 500 100 1000 Static Contact 50mV, 10mA Ω 0.100 0.150 0.075 ~~—V——~~ Resistance (max. init.) Dynamic Contact 0.5V, 50mA Ω 0.200 0.200 0.100 Resistance (max. init.) at 100 Hz, 1.5 msec **RELAY SPECIFICATIONS** Insulation Resistance Between all Isolated Pins Ω 10[12] 10[11] 10[10] (minimum) at 100V, 25°C, 40% RH Capacitance - Typical Shield Floating pF 1.0 2.0 1.4 ~~EE~~ Across Open Contacts Shield Guarding pF 0.3 1.0 0.2 Between Contacts VDC/peak AC 350 200 1000 Dielectric Strength Contacts to Coil VDC/peak AC 350 200 1000 (minimum) ~~—~~ Contacts/Shield to Coil VDC/peak AC 1500 1500 1500 Operate Time - including At Nominal Coil Voltage, msec. 0.5 1.0 1.5 bounce - Typical 30 Hz Square Wave Release Time - Typical ~~=~~ msec. 0.1 ~~=~~ 2.0 1.0 ~~= =~~ Top View: 5 4 5 4 5 4 Grid = .1”x.1”  (2.54mm x 2.54mm) 6 3 6 3 6 3 UP 7 2 7 2 7 2 8 1 8 1 8 1 ~~pil~~ **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 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.** 

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