431 page 65 specifications are subject to change without notice ?003 teledyne relays www.teledynerelays.com 431/1203/q1 est ablished reliability series 431 established reliability to-5 relays sensitive spdt description the to-5 relay, originally conceived and developed by teledyne, has become one of the industry standards for low-level switching from dry circuit to 1 ampere. designed for high-density pc board mounting, its small size and low coil power dissipation make the 431 relay one of the most versatile ultraminiature relays available. the following unique construction features and manufacturing techniques provide excellent resistance to environmental extremes and overall high 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 431d and 431dd relays have internal discrete silicon diodes for coil suppression and polarity reversal protection. the hybrid 431t relay features an internal silicon suppression diode and transistor driver. this hybrid package reduces required pc board floor space by reducing the number of external components needed to drive the relay. by virtue of its inherently low intercontact capacitance and contact circuit losses, the 431 relay has proven to be an excellent ultraminiature rf switch for frequency ranges well into the uhf spectrum. a typical rf application for the 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 make it a preferred method of t-r switching (see figure 1). internal construction series designation relay type 431 spdt basic relay 431d spdt relay with internal diode for coil suppression 431dd spdt relay with internal diodes for coil transient suppression and polarity reversal protection 431t spdt relay with internal transistor driver and coil transient suppression diode upper stationary contact lower stationary contact moving contact uni-frame armature environmental and physical specifications temperature (ambient) C5? to +125 vibration (general note 1) 30 gs to 3000 hz shock (general note 1) 75 gs, 6 msec, half-sine acceleration 50 gs enclosure hermetically sealed weight 0.109 oz. (3.09g) max.
?003 teledyne relays specifications are subject to change without notice 431 page 66 www.teledynerelays.com 431/1203/q1 est ablished reliability series 431 general electrical specifications (C5?to +125? nless otherwise noted) (notes 2 & 3) detailed electrical specifications (C5?to +125? nless otherwise noted) (note 3) contact arrangement 1 form c (spdt) rated duty continuous contact resistance 0.1 ohm max. before life; 0.2 ohm max. after life at 1a/28vdc (measured 1/8" from header) contact load ratings (dc) (see fig. 2 for other dc resistive voltage/current ratings) resistive: 1 amp/28vdc inductive: 200 ma/28vdc (320 mh) lamp: 100 ma/28vdc low level: 10 to 50 ?/10 to 50mv contact load ratings (ac) resistive: 250 ma/115vac, 60 and 400 hz (case not grounded) 100 ma/115vac, 60 and 400 hz (case grounded) contact life ratings 10,000,000 cycles (typical) at low level 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 150 milliwatts typical at nominal rated voltage @ 25 operate time 431, 431d, 431dd series: 4.0 msec max. at nominal rated coil voltage 431t: 3.5 msec (note 8) release time 431 series: 2.5 msec max. 431d, 431dd, 431t: 7.5 msec max. contact bounce 1.5 msec max. intercontact capacitance 0.4 pf typical insulation resistance 10,000 megohms min. between mutually isolated terminals dielectric strength atmospheric pressure: 500 vrms/60hz 70,000 ft.: 300 vrms/60hz (431t: 125 vrms/60 hz) negative coil transient (vdc) 431d, 431dd, 431t 1.0 max diode p.i.v. (vdc) 431d, 431dd, 431t 100 min. 431t transistor characteristics base turn off voltage (vdc) 0.3 min. emitter-base breakdown voltage (bv ebo ) (@25) (vdc) 6.0 min. collector-base breakdown voltage (bv ebo ) (@25 & lc = 100 ?) (vdc) 75 min. base part numbers (see note 10 for full p/n example) 431-5 431d-5 431dd-5 431t-5 431-6 431d-6 431dd-6 431t-6 431-9 431d-9 431dd-9 431t-9 431-12 431d-12 431dd-12 431t-12 431-18 431d-18 431dd-18 431t-18 431-26 431d-26 431dd-26 431t-26 coil voltage (vdc) nom. 5.0 6.0 9.0 12.0 18.0 26.5 max. 8.0 11.0 16.0 22.0 33.0 45.0 coil resistance (ohms ?0% @25? 431, 431d, 431t (note 4) 125 255 630 1025 2300 4000 431dd (note 4) 100 200 630 1025 2300 4000 coil current (madc @25) (431dd series) min. 36.3 22.7 11.5 9.7 6.7 5.7 max. 50.0 30.6 15.0 12.5 8.5 7.2 coil current (madc @25) (431t series) (note 7) min. 34.7 21.2 11.8 10.1 6.7 5.7 max. 47.8 27.7 16.8 13.6 9.1 7.7 pick-up voltage (vdc, max.) 431, 431d 3.7 4.5 6.8 9.0 13.5 18.0 431dd 4.5 5.5 7.8 10.0 14.5 19.0 431t (note 7) 3.6 4.8 7.8 10.0 14.5 19.0 base current to turn on (madc, max.) (431t series) (note 7) 1.2 0.78 0.48 0.39 0.26 0.20 drop-out voltage (vdc) 431, 431d, 431t (note 7) min. 0.15 0.18 0.35 0.41 0.58 0.89 max. 2.0 2.8 4.2 5.6 8.4 10.4 431dd min. 0.15 0.18 0.35 0.40 0.58 0.89 max. 2.4 2.8 4.2 5.6 8.4 10.4 performance curves (note 2) 0 .1.2 .3 .4 .5 .6 1020 30 40 50 60 70 .01 0.5 .1 .5 1.0 frequency (ghz) typical rf performance inser tion loss 1.92 1.221.07 1.02 1.011.00 1.00 vswr 300 250200 150 100 50 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) figure 2 typical dc cont act ra ting (resistive) load vol tag e (vdc) db return loss (vswr) isolation 431t 431, 431 d, 431d d 431, 431d, 431 dd 431t 431t 431, 431d, 431dd figure 1
431 page 67 specifications are subject to change without notice ?003 teledyne relays www.teledynerelays.com 431/1203/q1 est ablished reliability 1 2 3 4 5 1 2 3 4 6 7 8 9 dimensions are shown in inches (millimeters) .370 (9.40) dia. max. .335 (8.51) dia. max. .375 (9.52) max. +.002 (.05) .017 (.43) .001 (.03) dia. .035 (.89) .010 (0.25) 45 3 typ. case detail .031 (.79) .003 (0.08) .200 (5.08) .010 (.25) dia. wire lead: .75 (19.05) min. pin: .187 (4.75) . 010 (.25) (see note 6) lead & pin locations (viewed from terminals) 5 leads 36 3 typ. 8 leads pin numbers (for reference only) 431t 431 431, 431d, 431dd 431t series 431 outline dimensions general notes 1. relay contacts will exhibit no chatter in excess of 10 sec or transfer in excess of 1 ?ec. 2. ypical characteristics are based on available data and are best estimates. no on-going verification tests are performed. 3. unless otherwise specified, parameters are initial values. 4. for reference only. coil resistance not directly measurable at relay terminals due to internal series semiconductor. 431dd and 431t only. 5. unless otherwise specified, relays will be supplied with either gold-plated or solder-coated leads. 6. the slash and characters appearing after the slash are not marked on the relay. 7. limit base emitter current to 15 madc. 8. applicable to all coil voltages. see base current to turn on. 9. screened hi-rel versions available. contact factory. 10. schematics are viewed from terminals 431 431d 431t 431dd vcc vr notes: logic 1 activates the rela y. logic 0 de-activates the rela y. vcc = logic bias po wer . vr = coil energization voltage . pin 2 pin 3 pin 1 pin 4 logic element 1 = 0.20 to 1.20ma 0 = 0.3vdc min. schematic diagrams typical logic interface (see note 8) te l edyne par t numbering system f or t 2 r ? e stablis hed reliability r elay er 431 y m3 - 26 a / s q e stablis h ed r eliability d esignator pad option (see appendix) r elay ser ies optional ground pin (see appendix) q= solder coated leads g= gold plated leads (notes 5 and 6) s= .187" leads (note 6) coil voltage screening and reliability level te l edyne par t numbering system f or m ilitary qualified (ja n) r elays j 431 m3 - 26 p l m ilitary (ja n ) d esignator pad option (see appendix) r elay ser ies te r minal v ariant p = 0.187" coil voltage screening and reliability level
relay options page 119 specifications are subject to change without notice ?003 teledyne relays www.teledynerelays.com rop/1203/q1 appendix spacer pads
?003 teledyne relays specifications are subject to change without notice relay options page 120 www.teledynerelays.com rop/1203/q1 appendix spreader pads
relay options page 121 specifications are subject to change without notice ?003 teledyne relays www.teledynerelays.com rop/1203/q1 appendix ground pin positions
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