? 2009 teledyne relays (800) 284-7007 ? www.teledynerelays.com srf300/srf303 page 1 srf300srf303\062009\q2 internal construction series srf300 srf303 surface mount, high repeatability, broadband to-5 relays dpdt description the ultraminiature srf300 and srf303 relays are designed to provide a practical surface-mount solution with improved rf signal repeatability over the frequency range. these relays are engineered for use in rf attenuator, rf switch matrices, ate and other applications that require dependable high frequency signal fidelity and performance. the srf300 and srf303 feature: ? high repeatability ? broader bandwidth ? metal enclosure for emi shielding ? high isolation between control and signal paths ? high resistance to esd the following unique construction features and manufacturing techniques provide excellent robustness to environmental extremes and overall high reliability: ? uniframe motor design provides high magnetic efficiency and mechanical rigidity ? minimum mass components and welded construction provide maximum resistance to shock and vibration ? advanced cleaning techniques provide maximum assurance of internal cleanliness ? hermetically sealed ? solder dipped leads, (rohs compliant solder option available) series designation relay type srf300 repeatable, rf to-5 relay srf303 sensitive, repeatable, rf to-5 relay environmental and physical specifications temperature (ambient) storage C65c to +125c operating C55c to +85c vibration (general note 1) 10 gs to 500 hz shock (general note 1) 30 gs, 6ms half sine enclosure hermetically sealed weight srf300 0.09 oz. (2.55g) max. srf303 0.16 oz. (4.5g) max. uniframe armature upper stationary contact moving contact lower stationary contact srf300 - 5 / r relay series r = rohs compliant * surface mount relays are solder-coated by default (notes 6 & 7) coil voltage teledyne part numbering system for smt relays
srf300/srf303 page 2 specifications are subject to change without notice ? 2009 teledyne relays srf300srf303\062009\q2 series srf300 and srf303 typical rf characteristics (see rf notes) rf notes 1. test conditions: a. fixture: .031" copper clad, reinforced ptfe, rt/duroid ? 6002 with sma connectors. (rt/duroid ? is a registered trademark of rogers corporation.) b. room ambient temperature. c. terminals not tested were terminated with 50-ohm load. d. contact signal level: C10 dbm. fe no. of test samples: 4. 2. data presented herein represents typical charac teristics and is not intended for use as specification limits. 3. data is per pole, except for pole-to-pole data. 4. data is the average from readings taken on all open contacts. 5. data is the average from readings taken on poles with coil energized and de-energized. 6. data is the average from readings taken on all closed contacts. 7. test fixture effect de-embedded from frequency and time response data. srf300 /srf303 time response (rf note 6) -0.1 0.1 0.3 0.5 0.7 0.9 1.1 -100 0 100 200 300 400 500 600 700 800 900 time (ps) volt 10% 90% 37ps reference 51.3ps pulse rise time 62.3ps propagation delay time srf300yz insertion loss (rf note 6) -12 -10 -8 -6 -4 -2 0 0123456 frequency(ghz) insertion loss(db) p1nc p1no srf300yz vswr (rf note 6) 1 1.5 2 2.5 3 3.5 4 4.5 0123456 frequency(ghz) vswr p1nc p1no srf300yz isolation across contacts (rf note 4) -60 -50 -40 -30 -20 -10 0 0123456 frequency(ghz) isolation(db) p1nc p1no srf300yz pole-pole is olation (rf note 5) -70 -60 -50 -40 -30 -20 -10 0 0123456 frequency(ghz) p-p isolatlon(db) de-energized energized
? 2009 teledyne relays (800) 284-7007 ? www.teledynerelays.com srf300/srf303 page 3 srf300srf303\062009\q2 contact arrangement 2 form c (dpdt) rated duty continuous contact resistance 0.15 max. contact load rating resistive: 1amp/28vdc low level: 10 to 50 a @ 10 to 50 mv contact life ratings 10,000,000 cycles (typical) at low level coil operating power srf300-5: 500 mw typical @ nominal rated voltage srf300-12: 370 mw typical @ nominal rated voltage srf303-5: 250 mw typical @ nominal rated voltage srf303-12: 169 mw typical @ nominal rated voltage operate time srf300: 4.0 ms max. srf303: 6.0 ms max. release time srf300: 3.0 ms max. srf303: 3.0 ms max. intercontact capacitance 0.4 pf typical insulation resistance 1,000 m min. between mutually isolated terminals dielectric strength 350 vrms (60 hz) @ atmospheric pressure series srf300 and srf303 general electrical specifications (@25c unless otherwise noted) (notes 2 & 3) detailed electrical specifications (@25c) base part numbers srf300-5/srf303-5 srf300-12/srf303-12 coil voltage, nominal (vdc) 5.0 12.0 coil resistance (ohms 20%) srf300 50 390 srf303 100 850 pick-up voltage (vdc max.) 3.6 9.0 outline dimensions general notes 1. relays will exhibit no contact chatter in excess of 10 sec or transfer in excess of 1 sec. 2. unless otherwise specified, parameters are initial values. 3. relays may be subjected to 260c, peak solder reflow temperature, three 1 minute passes. 4. butt-lead ends are coplanar within .003" (0.08). 5. application notes available for pcb layout and mounting information. 6. terminals coated with sn60 or sn63 solder. 7. add "/r" to end of part number for rohs compliant solder coated pins (sn99.3/cu0.7). z ground pin y ground pin notes: 1. dimensions are in inches, metric equivalents shown in [ ]. 2. for best rf performance, solder ends of rf ground pins to pcb rf ground plane. 3. postitions 5 and 10 are for uninsulated case ground options. 4. drawing shows: srf300yz
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