SERIES 172 CENTIGRID COMMERCIAL RELAYS DPDT SERIES RELAY TYPE DESIGNATION 172 DPDT basic relay 172D DPDT relay with internal diode for coil transient suppression INTERNAL CONSTRUCTION DESCRIPTION The 172 Centigrid relay is an ultraminiature, hermetically sealed, armature UPPER relay for commercial applications. Its low profile height (.280 ) and .100 grid UNI-FRAME STATIONARY CONTACT spaced terminals, which preclude the need for spreader pads, make it an ideal ARMATURE choice where extreme packaging density and/or close PC board spacing are LOWER required. STATIONARY CONTACT MOVING CONTACT The basic operating concept and internal structure are similar to Teledynes DPDT 114 Centigrid relay. 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. ENVIRONMENTAL AND PHYSICAL SPECIFICATIONS The Series 172 relay has an internal discrete silicon diode for coil transient Storage 65C to +125C Temperature suppression. (Ambient) Operating 55C to +85C Vibration By virtue of its inherently low intercontact capacitance and contact circuit 10 gs to 500 Hz (General Note 1) losses, the 172 relay is an excellent subminiature RF switch for frequencies Shock 30 gs, well into the UHF spectrum (see Figure 1). Applications include (General Note 1) 6 msec, half-sine telecommunications, test instruments, mobile communications, attenuators, Enclosure Hermetically sealed and automatic test equipment. Weight 0.15 oz. (4.3g) max. 2007 TELEDYNE RELAYS SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE 172 Page 1 www.teledynerelays.com 172/0107/Q1INSERTION LOSS SERIES 172 GENERAL ELECTRICAL SPECIFICATIONS ( 25C) (Notes 2 & 3) Contact Arrangement 2 Form C (DPDT) Rated Duty Continuous Contact Resistance 0.15 ohm max. before life 0.3 ohm max. after life at 1A/28Vdc (measured 1/8 from header) Resistive: 1 Amp/28Vdc Contact Load Ratings (DC) Inductive: 200 mA/28Vdc (320 mH) (See Fig. 1 for other DC Lamp: 100 mA/28Vdc resistive voltage/current ratings) Low Level: 10 to 50 A/10 to 50mV 5,000,000 cycles (typical) at low level Contact Life Ratings 500,000 cycles (typical) at 0.5A/28Vdc resistive 100,000 cycles min. at all other loads specified above Contact Overload Rating 2A/28Vdc Resistive (100 cycles min.) Contact Carry Rating Contact factory Operate Time 6.0 msec max. at nominal rated coil voltage Release Time 172: 3.0 msec max. 172D: 6.0 msec max. Intercontact Capacitance 0.4 pf typical Insulation Resistance 1,000 megohms min. between mutually isolated terminals Dielectric Strength Atmospheric pressure: 300 Vrms/60Hz Negative Coil Transient 172 2.0 Vdc Max. Diode P.I.V. 172D 60 Vdc Min. DETAILED ELECTRICAL SPECIFICATIONS ( 25C) (Note 3) BASE PART 172-3 172-5 172-12 172-26 NUMBERS 172D-3 172D-5 172D-12 172D-26 Nom. 3.0 5.0 12.0 26.5 Coil Voltage (Vdc) Max. 3.6 5.8 16.0 32.0 Coil Resistance (Ohms 20%) 39 64 400 1600 Pick-up Voltage (Vdc, Max.) Pulse Operation 2.25 3.8 9.0 18.0 Coil Operating Power at Nominal Voltage (Milliwatts) 235 405 360 440 OUTLINE DIMENSIONS (Note 4) SCHEMATIC DIAGRAM CASE DETAIL TERMINAL LOCATIONS (Viewed from Terminals, Numbers for Reference Only) .750 MIN031 REF .035 REF .280 MAX (19.05) (.79) (.89) (7.11) 7 8 1 .335 SQ MAX. 2 6 172 (8.51) .100 .010 TYP (2.54 .25) 5 4 3 +.002 .017 DIA .001 .375 SQ MAX. +.05 (.43 ) (8.51) .03 DIMENSIONS ARE SHOWN IN INCHES (MILLIMETERS) 172D SCHEMATIC IS VIEWED FROM TERMINALS GENERAL NOTES PERFORMANCE CURVES (Note 2) 1. Relay contacts will exhibit no chatter in TYPICAL RF PERFORMANCE TYPICAL DC CONTACT RATING (RESISTIVE) excess of 10 sec or transfer in excess 0 of 1 sec1 2. Typical characteristics are based on .2 300 available data and are best estimates3 250 No on-going verification tests are .4 performed. 200 10 1.92 3. Unless otherwise specified, parameters 20 1.22 150 are initial values. 30 1.07 4. Relays can be supplied with a spacer 100 40 1.02 pad. See appendix. 50 1.01 50 60 1.00 70 1.00 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 .01 0.5 .1 .5 1.0 LOAD CURRENT (AMPS DC) FREQUENCY (GHz) FIGURE 2 FIGURE 1 172 Page 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE 2007 TELEDYNE RELAYS www.teledynerelays.com 172/0107/Q1 RETURN LOSS (VSWR) ISOLATION ACROSS POLES ISOLATION ACROSS CONTACTS dB VSWR LOAD VOLTAGE (VDC)
