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4312RV Series
RFID Transponder Coils

  • For RFID applications at 125kHz
  • AEC-Q200 Grade 1 (−40°C to +125°C)
  • Designed to withstand the harshest mechanical shock and high temperatures
  • Developed for tire pressure monitoring systems
  • Uniquely shaped terminations ensure excellent board adhesion
  • RoHS Compliant. 260°C compatible. Gold over nickel over phos bronze terminations.
  • COTS Plus tin-silver-copper and tin-lead terminations available

SPECIFICATIONS



Part number1
Click to get parts
Inductance
at 125 kHz2
±2% (mH)
Q
min2
Read
distance3
(inch/cm)
Sensitivity4
(mV/µT)
Matching
capacitor5
(pF)
DCR
max6
(Ohms)
SRF
typ7
(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 termination and packaging codes: e.g. 4312RV-725XGLD
Termination: L = RoHS compliant gold over nickel over phos bronze
Special order, added cost: T = RoHS tin-silver-copper (95.5/4/0.5) or
S
= non-RoHS tin-lead (63/37).
  Packaging: D = 13" machine-ready reel
EIA-481 embossed plastic tape (3000 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 at 25°C on a micro-ohmmeter. For other operating temperatures, use this DCR at Temperature calculator.
7 SRF measured using Agilent/HP 8753D network analyzer. Details
8 Ambient temperature range: −40°C to +125°C
9 Storage temperature range: Component: −40°C to +125°C
Tape and reel packaging: −40°C to +80°C
10 Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
11 Electrical specifications at 25°C.
12 Temperature coefficient of inductance: +300 to +1100 ppm/°C.
Refer to Application Notes Transponder Coils in an RFID System and Measuring Sensitivity of Transponder Coils for additional information.
Refer to Soldering Coilcraft Components before soldering.
PCB washing: Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

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Updated: April 11, 2017