? coilcraft, inc. 2009 specifications subject to change without notice. please check our website for latest information. rfid transponder coils C 4312rv document 461-1 document 461-1 revised 10/30/08 the 4312rv series of transponder coils is designed for rfid applications at 125 khz. it is coilcraft?s smallest transponder coil developed specifically for the harshest mechanical environments. the coil is wound on a plastic base, providing great durability and allowing this part to withstand physical shock. with operating temperature range to 125c, these parts are ideal for use in a wide range of automotive applications. the uniquely shaped termination provides excellent board adhesion. in addition to our standard models, coilcraft can also design transponder coils to operate at other frequencies. to request free evaluation samples, contact coilcraft or visit www.coilcraft.com . inductance 2 read matching at 125 khz distance 3 sensitivity 4 capacitor 5 dcr max 6 srf typ 7 part number 1 2% (mh) q min 2 (inches/cm) (mv/t) (pf) (ohms) (khz) 4312rv-404xgl_ 0.40 21 19.65 / 49,91 9.14 4050 11.5 6340 4312rv-105xgl_ 1.00 21 24.25 / 61,60 15.26 1621 29 4150 4312rv-245xgl_ 2.38 26 28.35 / 72,01 24.72 681 55 2470 4312rv-495xgl_ 4.90 24 32.85 / 83,44 42.45 331 103 1270 4312rv-725xgl_ 7.20 30 35.05 / 89,03 60.02 225 128 1465 4312rv-905xgl_ 9.00 32 35.80 / 91,00 78.10 180 150 1200 1. when ordering, please specify packaging code: 4312rv-725xgl d 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 at 125 khz. for recommended test procedures, contact coilcraft. 3. 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. 4. sensitivity measured in accordance with coilcraft application note ?measuring sensitivity of transponder coils.? 5. matching capacitor value required for parallel resonant circuit operating at 125 khz. 6. dcr measured on micro-ohmmeter. 7. srf measured using agilent/hp 8753d network analyzer. 8. ambient temperature range: ? 40c to +125c 9. storage temperature range: component: ? 40c to +125c packaging: ? 40c to +80c 10. 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. 11. electrical specifications at 25c. 12. temperature coefficient of inductance: +300 to +1100 ppm/c. refer to doc 362 ?soldering surface mount components? before soldering.
? coilcraft, inc. 2009 specifications subject to change without notice. please check our website for latest information. document 461-2 document 461-2 revised 10/30/08 rfid transponder coils C 4312rv dimensions typical l vs frequency weight: 210 ? 240 mg terminations: gold over nickel over phos bronze tape and reel: 3000/7 reel 24 mm tape width for packaging data see tape and reel specifications section. 0.030 0,76 0.347 8,81 0.45 11,43 0.32 8,1 0.065 1,65 0.15 3,8 recommended land pattern 0.448 11,38 0.136 3,45 0.092 2,34 max max max note: unless otherwise indicated, all part dimensions 0.002/0,05 xxx 0 1 2 3 4 5 6 7 8 9 10 0.01 0.1 10 1 inductance (mh) frequency (mhz) 4.9 mh 7.2 mh 9.0 mh 1.0 mh 0.40 mh 2.38 mh 125 khz
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