CENTIGRID AND TO-5 SERIES 712 COMMERCIAL TO-5 RELAYS DPDT SERIES RELAY TYPE DESIGNATION 712 DPDT basic relay 712D DPDT relay with internal diode for coil transient suppression 712TN DPDT relay with internal transistor driver and coil transient suppression diode INTERNAL CONSTRUCTION DESCRIPTION The TO-5 relay, originally conceived and developed by Teledyne, has become UNI-FRAME one of the industry standards for low-level switching from dry circuit to 1 UPPER ampere. Designed for high-density PC board mounting, the Series 712 relays STATIONARY CONTACT ARMATURE are some of the most versatile ultraminiature relays available because of their small size and low coil power dissipation. LOWER STATIONARY CONTACT The following unique construction features and manufacturing techniques provide excellent resistance to environmental extremes and overall high MOVING CONTACT reliability: 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 Series 712D relay has an internal discrete silicon diode for coil transient suppression. The hybrid Series 712TN relay has an internal silicon diode and ENVIRONMENTAL AND transistor driver. The integrated packaging of the relay with its associated PHYSICAL SPECIFICATIONS semiconductor devices greatly reduces PC board floor space requirements as Storage 65C to +125C Temperature well as component installation costs. (Ambient) Operating 55C to +85C By virtue of its inherently low intercontact capacitance and contact circuit Vibration 10 gs to 500 Hz (General Note 1) losses, the 712 has proven to be excellent ultraminiature RF switch for frequency ranges well into the UHF spectrum. A typical RF application for the Shock 30 gs, (General Note 1) 6 msec, half-sine TO-5 relay is in handheld radio transceivers, wherein the combined features of good RF performance, small size, low coil power dissipation and high reliability Enclosure Hermetically sealed make it a preferred method of Transmit-Receive switching (see Figure 1). Weight 0.09 oz. (2.6g) max. 712 Page 93 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE 2009 TELEDYNE RELAYS www.teledynerelays.com 712/0909/Q3INSERTION LOSS SERIES 712 GENERAL ELECTRICAL SPECIFICATIONS ( 25C) (Notes 2 & 3) Contact Arrangement 2 Form C (DPDT) Rated Duty Continuous Contact Resistance 0.15 ohm max. before life 0.25 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. 2 for other DC Lamp: 100 mA/28Vdc resistive voltage/current ratings) Low Level: 10 to 50 A/10 to 50mV Resistive: 250 mA/115Vac, 60 and 400 Hz (Case not grounded) Contact Load Ratings (AC) 100 mA/115Vac, 60 and 400 Hz (Case grounded) 10,000,000 cycles (typical) at low level Contact Life Ratings 1,000,000 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 Coil Operating Power 450 milliwatts typical at nominal rated voltage Operate Time 4.0 msec max. at nominal rated coil voltage Release Time 712: 3.0 msec max. 712D, 712TN: 6.0 msec max. Intercontact Capacitance 0.4 pf typical Insulation Resistance 1,000 megohms min. between mutually isolated terminals Dielectric Strength Atmospheric pressure: 350 Vrms/60Hz Negative Coil Transient (Vdc) 712D, 712TN 2.0 max Diode P.I.V. (Vdc) 712D, 712TN 60 min. Base Voltage to Turn Off (Vdc) 0.3 min 712TN Transistor Emitter-base breakdown Voltage (BVEBO) (Vdc) 6.0 min Characteristics Collector-base breakdown Voltage (BVCBO) ( 25C & lc = 100 A) (Vdc) 60 min DETAILED ELECTRICAL SPECIFICATIONS ( 25C) (Note 3) BASE PART 712-5 712-6 712-9 712-12 712-18 712-26 NUMBERS 712D-5 712D-6 712D-9 712D-12 712D-18 712D-26 (See Note 8 for full P/N example) 712TN-5 712TN-6 712TN-9 712TN-12 712TN-18 712TN-26 Nom. 5.0 6.0 9.0 12.0 18.0 26.5 Coil Voltage (Vdc) Max. 5.8 8.0 12.0 16.0 24.0 32.0 Coil Resistance (Ohms 20% 25C) (712TN: See Note 4) 50 98 220 390 880 1560 Pick-up Voltage (Vdc, Max.) Pulse Operated 3.6 4.2 6.5 8.4 13.0 17.0 712TN Base Current to Turn On (mAdc, Min.) 3.00 2.04 1.36 1.03 0.68 0.50 PERFORMANCE CURVES (Note 2) TYPICAL RF PERFORMANCE TYPICAL DC CONTACT RATING (RESISTIVE) 0 .1 300 .2 .3 250 .4 200 10 1.92 20 1.22 150 30 1.07 100 40 1.02 50 1.01 50 60 1.00 70 1.00 .01 0.5 .1 .5 1.0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 LOAD CURRENT (AMPS DC) FREQUENCY (GHz) FIGURE 1 FIGURE 2 2009 TELEDYNE RELAYS SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE 712 Page 94 www.teledynerelays.com 712/0909/Q3 RETURN LOSS (VSWR) ISOLATION ACROSS POLES ISOLATION ACROSS CONTACTS CENTIGRID AND TO-5 dB VSWR LOAD VOLTAGE (VDC)