TR1102CAP - X/Y axis SMD RFID Transponder Coil CAP Protection - 125kHz / 2.38-9mH / 11.8x3.1x2.6mm

Freq. (kHz)L (mH)Q MinSensitivity (mVpp/App/m) MinHeight (mm)Length (mm)Width (mm)SRF (kHz) MinToleranceCres (pF)DCR (Ω) Max
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X/Y axis SMD RFID Transponder Coil CAP Protection

The TR1102 CAP series of surface mountable ferrite wound inductor is an evolution of the TR1102 series, and also one of the very first SMD coils designed for transponder use. Its length and cross sectional area are optimized to achieve the maximum sensitivity in the coil axis. And the use of high quality plastic material for the cap provides an additional mechanical protection to the coil with the thinnest walls, combined with a high performance in temperature. 

The TR1102CAP is a solution that combines the low cost and high-speed assembly of the circuit component, with the high mechanical protection provided by the cap, and it’s excellent when the application demands a stronger coil.

  • Size: 11.8 x 3.1 x 2.6 mm.
  • Terminals: Ag-Ni-Sn100.
  • Wire: H, 180ºC, Solderable.
  • Max. Operating Temperature 125ºC.


The specification chart is a reference guide for the most common required values at working frequencies of 125 kHz. Any other inductance value at LF or tighter tolerances can be provided. Please contact our sales deparment for any inquiry.


This product has a datasheet available upon request.

L (mH)ToleranceQ MinFrequency (kHz)Cres (pF)SRF (kHz) MinDCR (Ω) MaxSensitivity (mVpp/App/m) MinLength (mm)Width (mm)Height (mm)
TR1102CAP-0238J 2.38 ±5% 25 125 680 500 40.7 35 11.8 3.1 2.6
TR1102CAP-0491J 4.91 ±5% 30 125 330 420 49 50 11.8 3.1 2.6
TR1102CAP-0720J 7.20 ±5% 27 125 220 330 90.2 70 11.8 3.1 2.6
TR1102CAP-0900J 9.00 ±5% 24.3 125 180 300 132 75 11.8 3.1 2.6


Reel dimensions Tape dimensions PARTS/REEL
A B C D E W  P P0   P1  D  
330 50 13 30.4 24.4 24 8 4 2 2.8 0.3 3000


All dimensions in mm.


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  1. Rated Inductance LR: Measured at frequency fL, with impedance analyser WK3260 with 3MHz installed.
  2. Q Factor Qmin: Measured at frequency fL, with impedance analyser WK3260 with 3MHz installed.
  3. Self-resonance frequency fmin Measured at frequency fL, with impedance analyser WK3260 with 3MHz installed.
  4. DC resistance Rmax: Measured at 20ºC ambient temperature, measuring current <IR.
  5. Sensitivity: Measured with Helmholtz coils 5 turns, 160mm ∅, + waveform generator Agilent 33120A + oscilloscope Agilent 54622A. Contact PREMO RFID for complete measurement specification.