TELEDYNE RELAYS SERIES 172 CENTIGRID® COMMERCIAL RELAY DPDT SERIES DESIGNATION RELAY TYPE 172 DPDT basic relay 172D DPDT relay with internal diode for coil transient suppression DESCRIPTION INTERNAL CONSTRUCTION The 172 Centigrid ® relay is an ultraminiature, hermetically sealed, armature relay for commercial applications. Its low profile height (.280”) and .100” grid spaced terminals, which precludes the need for spreader pads, makes it an ideal choice where extreme packaging density and/or close PC board spacing are required. UNI-FRAME UPPER STATIONARY CONTACT ARMATURE LOWER STATIONARY CONTACT MOVING CONTACT The basic concept and internal structure are similar to the Teledyne DPDT Centigrid® relay (114 Series). Unique construction features and manufacturing techniques provide overall high reliability and excellent resistance to environmental extremes: • • • • • All welded construction. Unique uni-frame design providing high magnetic efficiency and mechanical rigidity. High force/mass ratios for resistance to 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. The 172 Series utilizes an internal discrete silicon diode for coil suppression with electrical characteristics as specified herein. ENVIRONMENTAL AND PHYSICAL SPECIFICATIONS Temperature (Ambient) -55°C to +85°C Vibration 10 g’s to 500 Hz (Note 3) Shock 30 g’s for 6 msec. (Note 3) half-sine Enclosure Hermetically sealed Weight 0.15 oz (4.3 gms.) max. By virtue of its inherently low intercontact capacitance and contact circuit losses, the 172 relay is an excellent subminiature RF switch for frequencies well into the UHF spectrum (see Figure 1). Applications include telecommunications, test instruments, mobile communications, attenuators, and automatic test equipment. 96 SERIES 172 GENERAL ELECTRICAL SPECIFICATIONS (@ 25°C) (Notes 1 & 2) Contact Arrangement Rated Duty Contact Resistance (Note 4) Contact Load Ratings (DC) (See Fig. 2 for other DC resistive voltage/current ratings) 2 Form C (DPDT) Continuous 0.15 ohm max. before life; 0.3 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 5,000,000 cycles (typical) at low level 0,500,000 cycles (typical) at 0.5A/28VDC resistive 0,100,000 cycles min. at all other loads specified above 2A/28VDC Resistive (100 cycles min.) Contact factory 6.0 msec max. at nominal rated coil voltage 172: 3.0 msec max. 172D: 6.0 msec max. 0.4 pf typical 1,000 megohms min. between mutually isolated terminals Atmospheric pressure: 300 VRMS/60 Hz 60 VDC Min. 2.0 VDC Max. Contact Life Ratings Contact Overload Rating Contact Carry Rating Operate Time Release Time lntercontact Capacitance Insulation Resistance Dielectric Strength Diode P.I.V. 172D Negative Coil Transient 172D DETAILED ELECTRICAL SPECIFICATIONS (@ 25°C) (Note 2) GENERIC PART NUMBERS Coil Voltage (VDC) ➧ S172-5 S172D-5 S172-12 S172D-12 S172-26 S172D-26 5.0 5.8 64 3.8 405 12.0 16.0 400 9.0 360 26.5 32.0 1600 18.0 440 Nom. Max. Coil Resistance (Ohms ± 20%) Pick-up Voltage (VDC, Max.) Pulse Operation Coil Operating Power at Nominal Voltage (Milliwatts) SCHEMATIC DIAGRAM OUTLINE DIMENSIONS .750 MIN. (19.05) .280 REF (7.11) .031 ± .003 (.79 ± .08) .035 ± .010 (.89 ± .25) 7 .335 SQ. MAX. (8.51) 8 1 2 6 5 +.002 .017 –.001 DIA .305 MAX. (7.75) (.43 +.05 ) –.03 3 4 172 .100 ± .010 TYP (2.54 ± .25) .375 SQ. MAX. (9.53) DIMENSIONS ARE SHOWN IN INCHES (MILLIMETERS) *Unless otherwise specified .280” (7.11) or .380” (9.65) height may be supplied. To order the lower profile exclusively, add /28 to the part number. e.g. 172-26/28 (NOTE: /28 will not be marked on the part). **0.405 (10.29) max. for the higher profile relay. 172D SCHEMATICS ARE VIEWED FROM TERMINALS PERFORMANCE CURVES (NOTE 1) NOTES: TYPICAL DC CONTACT RATING (RESISTIVE) TYPICAL RF PERFORMANCE INSER TION LOSS 10 20 30 40 50 60 70 R) S (VSW LOS ETURN R N ATIO ISOL .01 0.5 SS ACRO ACTS CONT .1 ES S POL CROS TION A ISOLA .5 1.92 1.22 1.07 1.02 1.01 1.00 1.00 1.0 LOAD VOLTAGE (VDC) 300 VSWR dB 0 .1 .2 .3 .4 250 200 150 100 50 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 FREQUENCY (GHz) LOAD CURRENT (AMPS DC) FIGURE 1 FIGURE 2 0.8 0.9 1.0 1. Characteristics shown as “typical” are based on available data and are best estimates. No on-going verification tests are performed. 2. Unless otherwise specified, parameters are initial values. 3. Contacts will exhibit no chatter in excess of 10 µsec or transfer in excess of 1 µsec. 4. Relays can be supplied with a spacer pad attached by adding M4 to the part number (e.g. 172M4-26). • Add 0.01 to contact resistance with spacer pad. • Pad Material: Polyester film. ©1996 TELEDYNE RELAYS 97 12525 Daphne Avenue Hawthorne, California 90250