TELEDYNE RELAYS SERIES CENTRIGRID® 122C MAGNETIC LATCHING AEROSPACE RELAY DPDT CMOS COMPATIBLE SERIES DESIGNATION 122C RELAY TYPE DPDT general purpose magnetic latching relay with internal power MOSFET driver and diode coil transient suppression DESCRIPTION The 122C Centigrid magnetic-latching relay is an ultraminiature, hermetically sealed, armature relay capable of being directly driven by most IC logic families. Its low profile height and .100” grid spaced terminals, which precludes the need for spreader pads, make it ideal for applications where extreme packaging density and/or close PC board spacing are required. The 122C Series utilizes internal silicon diodes for coil suppression, Zener diodes to protect the MOSFET gate inputs, and N-channel enhancement-mode MOSFET chips, which enable direct relay interfacing with most microprocessor and IC logic families (CMOS, TTL and MOS). The 122C magnetic-latching relay is ideally suited for applications where power-dissipation must be minimized. The relays can be operated with a short-duration pulse: after contacts have transferred, no external holding power is required. The basic concept and internal structure are similar to the Teledyne TO-5 422 relay series. The 122C is capable of meeting Teledyne Relays’ T 2R® requirements. The following unique construction features and manufacturing techniques provide overall high reliability and excellent resistance to environmental extremes: The magnetic-latching feature of the 122C Series provide a “memory” capability, since the relays will not reset upon removal of power. • All welded construction. • Unique uni-frame design providing high magnetic efficiency and mechanical rigidity. • High force/mass ratios to withstand shock and vibration. • Advanced cleaning techniques provide maximum assurance of internal cleanliness. • Precious metal alloy contact material with gold plating assures excellent high current and dry circuit switching capabilities. By virtue of its inherently low intercontact capacitance and contact circuit losses, the Centigrid relay has shown itself to be an excellent ultraminiature RF switch for frequency ranges well into the UHF spectrum. A typical RF application for the Centigrid® relay is in hand held radio transceivers, wherein the combined features of good RF performance, small size, low coil power dissipation, and high reliability make it a preferred method of transmit-receive switching (see Figure 1). PRINCIPLE OF OPERATION ENVIRONMENTAL AND PHYSICAL SPECIFICATIONS Energizing Coil B produces a magnetic field opposing MAGNETIC CIRCUIT A PERMANENT MAGNET SOFT IRON CORE A the holding flux of the permanent magnet in Circuit B. MAGNETIC CIRCUIT B SOFT IRON FRAME As this net holding force decreases, the attractive force in the air gap of Circuit A, which also results COIL A COIL B from the flux of the permanent magnet, becomes great enough to break the armature free of Core B, AIR GAP and snap it into a closed position against Core A. The STATIONARY CONTACT armature then remains in this position upon removal of energy from Coil B, but will snap back to position MOVING B upon energizing Coil A. Since operation depends CONTACT upon cancellation of a magnetic field, it is necessary to apply the correct polarity to the relay coils as indicated on the relay schematic. SOFT IRON ARMATURE When latching relays are installed in equipment, the latch and reset coils should not be pulsed simultaneously. Coils should not be pulsed with less than the maximum set/reset voltage and the pulse width should be a minimum of three times the specified operate time of the relay. If these conditions are not followed, it is possible for the relay to be in the magnetically neutral position. 62 Temperature (Ambient) -65˚C to +125˚C Vibration 30 g’s to 3000 Hz (Note 2) Shock 100 g’s for 6 msec. (Note 2) half-sine Acceleration 50 g’s (Note 2) Enclosure All welded, hermetically sealed Weight 0.10 oz (2.75 gms.) max. SERIES 122C GENERAL ELECTRICAL SPECIFICATIONS (-65°C to +125°C unless otherwise noted) (Notes 1 & 6) Contact Arrangement Rated Duty Contact Resistance 2 Form C (DPDT) Continuous 0.125 ohm max. before life; 0.225 ohm max. after life at 1A/28VDC, (measured 1/8” from header) Resistive: 1 Amp/28VDC Inductive: 200 mA/28VDC (320 mH) Lamp: 100 mA/28VDC Low Level: 10 to 50 µA/10 to 50 mV Resistive: 250 mA/115VAC, 60 and 400Hz (Case not grounded) 100 mA/115VAC, 60 and 400Hz (Case grounded) 10,000,000 cycles (typical) at low level 01,000,000 cycles (typical) at 0.5A/28VDC resistive 00,100,000 cycles min. at all other loads specified above 2 A/28VDC Resistive (100 cycles min.) Contact factory 1.5 msec max. at nominal rated coil voltage at 25˚C. 4.5 msec at nominal voltage. 2.0 msec max. 0.4 pf typical 10,000 megohms min. between mutually isolated terminals Atmospheric pressure: 500 VRMS/60 Hz 70,000 ft.: 125 VRMS/60Hz 1.0 max. Contact Load Ratings (DC) (See Fig. 2 for other DC resistive voltage/current ratings) Contact Load Ratings (AC) Contact Life Ratings Contact Overload Rating Contact Carry Rating Operate Time Minimum Operate Pulse Contact Bounce lntercontact Capacitance Insulation Resistance (Note 4) Dielectric Strength (Note 4) Negative Coil Transient (VDC) Diode P.I.V. (VDC) Zener Voltage (VDC) Zener Leakage Current @ 15.2 VDC (µA) 100 min. 17 min. to 23 max. 2.5 max. 0.5 max. Gate Voltage to Turn Off (Vdc) Gate Voltage to Turn On (VDC) Drain-Source Voltage (VDC) Power FET Characteristics –65˚C to +125˚C DETAILED ELECTRICAL SPECIFICATIONS 3.8 min. (Note 8) 55 max. (-65°C to +125°C unless otherwise noted) (Note 6) BASE PART NUMBERS (Note 3) Coil Voltage (VDC) Coil Current (mADC @ 25°C) Note 9 Coil Operating Power @ 25°C and Rated Voltage (mW) Latch and Reset Voltage (VDC) (Note 7) 122C-5 122C-6 122C-9 122C-12 122C-18 122C-26 Nom. Max. Max. Min. Nom. 5.0 5.6 114.9 82.2 6.0 8.0 57.0 41.6 9.0 12.0 37.2 27.4 12.0 16.0 27.8 20.5 18.0 24.0 18.2 13.7 26.5 32.0 15.2 11.4 505 296 288 287 286 351 Max. 3.5 4.5 6.8 9.0 13.5 18.0 PERFORMANCE CURVES (NOTE 1) TYPICAL RF PERFORMANCE TYPICAL DC CONTACT RATING (RESISTIVE) 0 INSERTIO N LOSS .1 300 .2 LOAD VOLTAGE (VDC) .3 10 1.92 20 1.22 30 RETURN 40 50 60 1.07 S TACT 1.02 S CON CROS ION A T ISOLA SWR) LOSS (V 1.01 CROSS ON A ISOLATI 70 .01 0.5 .1 POLES VSWR dB .4 250 200 150 100 50 1.00 1.00 .5 1.0 0 0.1 0.2 0.3 0.4 0.5 0.6 FREQUENCY (GHz) LOAD CURRENT (AMPS DC) FIGURE 1 FIGURE 2 63 0.7 0.8 0.9 1.0 SERIES 122C OUTLINE DIMENSIONS CASE DETAIL .335 MAX. (8.51) SCHEMATIC DIAGRAM TERMINAL LOCATIONS (Viewed from Terminals, Numbers for Reference only) .035 ± .010 (0.89 ± .25) .375 MAX. (9.53) .435 MAX. (11.05) COIL B INPUT .031 ± .003 (0.79 ± 0.08) 10 .100 ± .010 (2.54 ±.25 TYP. .75 MIN. (19.05) 2 8 7 6 PIN 10: +SUPPLY PIN 5: – SUPPLY PINS 4 & 9: GATE 1 9 .295 MAX. (7.49) 3 5 .475 MAX. (12.07) 4 +.002 .017 –.001 (.03) DIA. .200 ± .010 (5.08 ± .25) COIL A INPUT +(0.051) (0.043) –(0.025) 10 LEADS DIMENSIONS ARE SHOWN IN INCHES (MILLIMETERS) SCHEMATIC IS VIEWED FROM TERMINALS. CONTACTS SHOWN IN POSITION RESULTING WHEN COIL A LAST ENERGIZED. TYPICAL CMOS INTERFACE CIRCUIT SPACER PAD V+ Relays can be supplied with a spacer pad attached to the relay header. The pad permits the relay to be spaced away from the mounting surface facilitating solder joint inspection. To order add M9 to the part number. Example: 122CM9-26. 4081B .750 MIN (19.05) Coil B A Coil A A DRAIN DRAIN B 4081B C .300 MAX (7.62) NOTES: SOURCE D C SOURCE D (A) Internal Suppression Diode (B) FET Gate Input (C) Internal Zener Diode (D) Integral FET Body Diode 1. Material: Polyester film. 2. Add 0.01 ohm to contact resistance with mounting pad. NOTES: 1 . “Typical” characteristics are based on available data and are best estimates. No on-going verification tests are performed. 2. Relay contacts will exhibit no chatter in excess of 10 µsec or transfer in excess of 1 µsec. 3. Screened HI-REL versions available. Contact factory. 4. Pins 4, 5 and 9 must be shorted when tested for Insulation Resistance and Dielectric Withstanding Voltage. 5. Unless otherwise specified, relays will be supplied with either gold plated or solder coated leads. Contact your local representative for ordering information. 6. Unless otherwise specified, parameters are initial values. 7. The slash and characters appearing after the slash are not marked on the relay. 8. Maximum rated gate voltage = 15 VDC. 9. Measured for 5 sec max. Includes allowance for “on” resistance of MOSFET. 10. Teledyne Part Numbering System for Relays EXAMPLE: 122C Z M9 – 26 / Q Q = Solder Coated Leads (Notes 5 and 6) Relay Series Ground Pin (See page 112) Coil Voltage M9 = 194-19 Spacer Pad ©1996 TELEDYNE RELAYS 64 12525 Daphne Avenue Hawthorne, California 90250