54 series rf 1 20 aerosp ace centigrid magnetic-la tching r.f . rela ys dpdt t e l ed y n e r e la y s t emperature -65 c to + 125 c (ambient) vibration 30 g s to 3000 hz (note 3) shock 100 g s for 6 msec. (note 3) half-sine acceleration 50 g s (note 3) enclosure all welded, hermetically sealed w eight 0.10 oz. (2.84 gms.) max. environment al and physical specifica tions principle of opera tion energizing coil b produces a magnetic field opposing the holding flux of the per - manent magnet in cir cuit b. as this net holding for ce decreases, the attractive for ce in the air gap of cir cuit a, which also results from the flux of the perma - nent magnet, becomes great enough to break the armature free of core b, and snap it into a closed position against core a. the armature then remains in this position upon removal of power from coil b, but will snap back into position b upon energizing coil a. since operation depends upon cancellation of a magnetic field, it is necessar y to apply the correct polarity to the relay coils as indicated on the relay schematic. 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 nominal coil 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. coil a soft iron frame soft iron core a magnetic circuit a magnetic circuit b permanent magnet coil b stationary contact air gap moving contact soft iron armature all welded construction. unique uni-frame design providing high magnetic efficiency and mechanical rigidity . high for ce/mass ratios for resistance to shock and vibration. advanced cleaning techniques provide maximum assurance of internal cleanliness. gold plated precious metal alloy contacts ensure reliable d.c. switching from dr y-cir cuit to 1/4 amp, as well as low , stable insertion loss. the rf120 relay is ideally suited for applications where power dissipation must be minimized. the relays can be operated with a short-duration pulse. after the contacts have transferred, no external holding power is required. the magnetic-latching feature of the rf120 series provides a ?emor y capability , since the relays will not reset upon removal of coil power . description the rf120 series relay is an ultraminiature, hermetically sealed, magnetic-latching relay featuring extremely low inter contact capacitance for exceptional r.f . per formance over the full uhf spectrum. its low profile height and .100?grid spaced terminals (precluding the need for spreader pads) make it ideal for applications where extreme packaging density and/or close pc board spacing are required. the basic design and internal structure are similar to the to-5 421 series relay . the relay is capable of meeting t eledyne relays? t 2 r requirements. the rf120 design has been optimized for use in rf attenuators, rf switch matrices, and other applications requiring high isolation, low insertion loss, and low vswr. unique construction features and manufacturing techniques provide overall high reliability and excellent resistance to environmental extremes.
55 2 form c (dpdt) continuous 0.125 ohm max. before life; 0.225 ohm max. after life at 0.25a/28vdc, (measured 1/8?from header) resistive: 0.25 amp/28vdc low level: 10 to 50 a/10 to 50 mv 10,000,000 cycles (typical) at low level 00, 100,000 cycles min. at 0.25 amp/28vdc 0.5a/28vdc resistive (100 cycles min.) contact factor y 290 milliwatts typical at nominal rated voltage @ 25 c 1.5 msec max. at nominal rated coil voltage 2.0 msec max. 4.5 msec @ nominal voltage 0.02 pf typical 10,000 megohms min. between mutually isolated terminals atmospheric pressure: 500 vrms/60 hz 70,000 ft.: 125 vrms/60hz series rf120 general electrical specifica tions (-65 c to +125 c unless other wise noted) (notes 1 & 2) contact arrangement rated duty contact resistance contact load rating (dc) contact life ratings contact overload rating contact carr y rating coil operating power operate t ime contact bounce minimum operate pulse lntercontact capacitance insulation resistance dielectric strength det ailed electrical specifica tions (-65 c to +125 c unless other wise noted) (note 2) rf120-5 rf120-6 rf120-9 RF120-12 rf120-18 rf120-26 base p ar t numbers (note 5) 5.0 6.0 9.0 12.0 18.0 26.5 6.0 8.0 12.0 16.0 24.0 32.0 61 120 280 500 1130 2000 3.5 4.5 6.8 9.0 13.5 18.0 coil v oltage (vdc) nom. max. coil resistance (ohms 10% @ 25 c) set & reset v oltage (vdc, max.) ? 0 .1 .2 .3 .4 10 20 30 40 50 60 70 .01 0.5 .1 .5 1.0 4.0 freq uency (ghz) 1.92 1.22 1.07 1.02 1.01 1.00 1.00 vswr db inser tion loss return loss (vswr) isola tion across cont acts i s o l a t i o n a c r o s s p o l e s typical r.f . performance (note 1) 1 0 1 2 3 4 5 6 7 8 9 outline dimensions dimensions are shown in inches (millimeters) .335 max. (8.51) 0.17 + .002 ?.001 dia. (0.43) + (0.051) ?(0.025) 10 leads .435 max. (11.05) .295 max. (7.49) .75 min. (19.05) coil b coil a .375 max. (9.53) (.031 .003) (0.79 0.08) .035 .010 (0.89 0.25) .475 max. (12.07) .200 (5.08) .100 typ . (2.54) schema tic (terminal view) (note 4) notes: 1. characteristics shown as ?ypical?are based on available data and are best estimates. no on-going verification tests are per formed. 2. unless other wise specified, parameters are initial values. 3. relays will exhibit no contact chatter in excess of 10 sec or transfer in excess of 1 sec. 4. contacts shown in position resulting when coil a last energized. 5. screened hi rel versions available on special order . contact factor y . ?1996 teledyne relays 12525 daphne avenue hawthorne, california 90250
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