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Technical content
in Inches (Millimeters)
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 in2), high reliability reed relays u High Insulation Resistance - 1012Ω 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 50 Ω impedance and switching of fast rise time digital pulses u RoHS compliant (except for 2920) (2.54) (7.11) (17.78) (12.7) (20.82) (0.56) .022 Dia. pins (0.51) (3.18) .100 (6.35) .820 .500 .700 .125 .250 .020 .280
Ordering Information
05=5 volts 12=12 volts Shielding Options2 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) Bottom View tel: (401) 943.2686 | fax: (401) 942.0920 16 | page
MODEL NUMBER 29042 29112 29202,3 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 75 250 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-Typical1 Signal Level 1.0V, 10mA x 106 Ops. 500 100 1000 Static Contact Dynamic Contact Resistance (max. init.) 0.5V, 50mA at 100 Hz, 1.5 msec Ω 0.200 0.200 0.100 RELAY SPECIFICATIONS Insulation Resistance (minimum) Between all Isolated Pins at 100V, 25°C, 40% RH Ω 1012 1011 1010 Capacitance - Typical Across Open Contacts Shield Floating Shield Guarding pF pF 1.0 0.3 2.0 1.0 1.4 0.2 Dielectric Strength (minimum) 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 Operate Time - including bounce - Typical At Nominal Coil Voltage, 30 Hz Square Wave msec. 0.5 1.0 1.5 Release Time - Typical msec. 0.1 2.0 1.0 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 Top View: Grid = .1”x.1” (2.54mm x 2.54mm) UP 8 1 COTO TECHNOLOGY, INC.For most recent data visit www.cotorelay.com page | 17