? coilcraft, inc. 2007 specifications subject to change without notice. please check our website for latest information. document 324-1 document 324-1 revised 10/10/07 rfid transponder coils C 4308rv coilcraft?s 4308rv antenna coils are high performance devices intended for rfid applications at 125 khz. these low profile parts have an extended length that allows longer read ranges. an encapsulated top en- sures reliable pick and place operations. core con- struction and encapsulation are rated for 125c, which makes these transponders ideal for higher temperature applications. for harsh environments, please consider the 4312rv or 5315tc, which were developed for tire pressure monitoring systems. the 4308rv transponders coils are available in 5% and 2% tolerances. in addition to the standard models shown, coilcraft can design coils to operate at other frequencies. coilcraft designer?s kit c383 contains four samples of all 5% inductance tolerance parts. to order, contact coilcraft or visit http://order.coilcraft.com . 1. when ordering, please specify tolerance and packaging codes: 4308rv-905x j l d tolerance: g = 2% j = 5% (table shows stock tolerances in bold.) packaging: d =13 machine-ready reel. eia-481 embossed plastic tape (3000 parts per full reel). b = less than full reel. in tape, but not machine ready. to have a leader and trailer added ($25 charge), use code letter d instead. 2. inductance and q measured using agilent/hp 4192a impedance analyzer. 3. tolerances in bold are stocked for immediate shipment. 4. read distance measured using the keeloq ? transponder evaluation kit part number dm303005 from microchip. distance was recorded as the voltage across the resonant circuit dropped below 10 mv. inductance read matching dcr srf at 125 khz 2 q distance 4 sensitivity 5 capacitor 6 max 7 typ 8 part number 1 (mh) tolerance 3 min 2 (in. / cm) (mv/t) (pf) (ohms) (khz) color code 4308rv-374x_l_ 0.37 5,2 26 22 / 55.9 9.82 4380 6.5 1800 or ange violet yellow 4308rv-404x_l_ 0.40 5,2 26 23 / 58.4 10.38 4050 7.1 5000 yellow black yellow 4308rv-704x_l_ 0.70 5,2 20 25 / 63.5 13.96 2320 19 6600 violet black yellow 4308rv-904x_l_ 0.90 5,2 22 26 / 66.0 16.06 1800 21 4800 w hite black yellow 4308rv-115x_l_ 1.08 5,2 24 30 / 76.2 17.78 1500 24 4300 brown brown green 4308rv-205x_l_ 1.97 5,2 28 34 / 86.4 24.90 823 31 1750 red black green 4308rv-245x_l_ 2.38 5,2 30 37 / 94.0 28.21 681 34 1700 red yellow green 4308rv-295x_l_ 2.89 5,2 30 37 / 94.0 32.12 561 42 1900 red white green 4308rv-335x_l_ 3.30 5,2 30 38 / 96.5 34.96 491 48 1425 orange orange green 4308rv-415x_l_ 4.15 5,2 27 39 / 99.1 41.35 391 70 1620 yellow brown green 4308rv-495x_l_ 4.90 5,2 26 38 / 96.5 47.17 331 93 1150 yellow white green 4308rv-685x_l_ 6.80 5,2 28 41 / 104.1 61.71 238 110 1080 blue gray green 4308rv-715x_l_ 7.10 5,2 27 42 / 106.7 65.60 228 114 1050 violet brown green 4308rv-725x_l_ 7.20 5,2 28 40 / 101.6 66.67 225 114 965 violet red green 4308rv-815x_l_ 8.10 5,2 28 42 / 106.7 75.08 200 125 965 gray brown green 4308rv-905x_l_ 9.00 5,2 30 40 / 101.6 84.64 180 125 725 white black green 5. sensitivity measured in accordance with coilcraft application note ?measuring sensitivity of transponder coils.? 6. matching capacitor value required for parallel resonant circuit operating at 125 khz. 7. dcr measured on micro-ohmmeter. 8. srf measured using agilent/hp 8753d network analyzer. 9. ambient temperature range: ? 40c to +125c 10. storage temperature range: component: ? 40c to +125c packaging: ? 55c to +80c 11. resistance to soldering heat: three reflows at >217c for 90 seconds (+260c 5c for 20 ? 40 seconds), allowing parts to cool to room temperature between. 12. electrical specifications at 25c. 13. temperature coefficient of inductance: +200 to +700 ppm/c see qualification standards section for environmental and test data. refer to doc 362 ?soldering surface mount components? before soldering.
? coilcraft, inc. 2007 rfid transponder coils C 4308rv specifications subject to change without notice. please check our website for latest information. typical q vs frequency typical l vs frequency 0.110 2,79 0.333 8,46 0.473 12,01 0.070 1,78 recommended land pattern 0.108 0.004 2,74 0,10 0.040 1,01 ref 0.020 0,51 ref 0.450 11,43 max max 0.433 0.005 10,99 0,127 0.124 3,15 0.079 0.004 2,00 0,10 0.040 0,89 document 324-2 document 324-2 revised 10/10/07 110 -404 -205 100 1000 10000 frequency (khz) 0 60 50 40 30 20 10 q factor -815 -415 1 10 100 1000 10000 frequency (khz) 0 12 10 8 6 4 2 inductance (mh) -404 -205 -815 -415 terminations: silver-palladium-platinum-glass frit weight: 230 ? 250 mg tape and reel: 3000/13 reel 24 mm tape width for packaging data see tape and reel specifications section.
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