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 u u u u u u u 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 COTO TECHNOLOGY RHOPOINT COMPONENTS LTD 2 Email: [email protected] Website: www.rhopoint.co.uk 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) Environmental Ratings 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. COTO TECHNOLOGY 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 RHOPOINT COMPONENTS LTD Holland Rd, Hurst Green, Oxted, Surrey, RH8 9AX,ENGLAND