Transpondercoils for Identification Systems

The market for wireless operating RFID systems (Radio Frequency Identification) with Transponder systems for the safe identification of persons, goods, animals, plants and documents has increased dramatically.

We at Kaschke are specialised in the development, production and support of custom specific identification systems, using transponder coils with ferrite cores in magnetic coupled systems. These identification and communication systems are operating with a typical frequency of 125 kHz.

These systems with transponder coils are successfully used in the application fields "access authority" (e.g. immobiliser,  remote access control ans keyless entry/go in vehicles, access to buildings or for authorized access to computerbased equipment), "personal indentification" and "data transmission" (e.g. in tyre pressure monitroing systems").

With our highly qualified engineers and due to the longstanding experience in the design of transponder coils (as well as in the technology, as in layout), we offer competemnt support to our customers, to develop new solutions in the various fields of RFID. The improved flattop/top coat material as cover offers optionally a mechnaical long-term protection for the transponder coils on the PDB.

 

Outstanding characteristics

  • Very good transmission
  • Very small temperature dependence
  • High Fres according to special winding technique
  • Excellent drop test performance
  • Lead-free and RoHS compliant
  • Solderability according to relevant IEC and IPC/Jedec standards
  • Optional top coat available for mechanical long-term protection
  • Operating temperature range : -40 °C up to +85 °C (125 °C)

 

Sensitivity A0 vs. inductance L, Ranges up to 3m possible

Range 186.0xx DW-111)
L [mH]Qfres [kHz]RDC [Ω] 2)A0 [mV/μT] 2)
0,19≥ 20@ 125 kHz≥ 20006,18,5
2,38 35@ 125 kHz≥ 5003530
7,20≥ 41@ 125 kHz≥ 5609751
8,80≥ 40@ 125 kHz≥ 45012855,7
30,00≥ 8@ 20 kHz≥ 22036016,7

Range 186.05x DW-81)
L [mH]Qfres [kHz]RDC [Ω] 2)A0 [mV/μT] 2)
2,37≥ 25@ 125 kHz7504718
3,155 25@ 125 kHz 12006821
4,91≥ 25@ 125 kHz95010626
7,2≥ 20@ 125 kHz 100017332
8,8≥ 25@ 125 kHz95019235
12,7≥ 25@ 125 kHz80029742
16,2≥ 25@ 125 kHz70033348

Range 185.4xx / 186.4xx High End1)
L [mH]Qfres [kHz]RDC [Ω] 2)A0 [mV/μT] 2)
1,056≥ 25@ 125 kHz≥ 6702321
3,155 31@ 125 kHz≥ 5505042
9,50≥ 10@ 20 kHz≥ 23086100

Range 185.2xx Classic1)
L [mH]Qfres [kHz]RDC [Ω] 2)A0 [mV/μT] 2)
1,056≥ 38@ 125 kHz≥ 7001618
2,4 25@ 125 kHz≥ 4004328
4,91≥ 15@ 125 kHz≥ 2905143
9,5≥ 8@ 20 kHz≥ 3407158

Range 167.xxx z-Spule1)
L [mH]Qfres [kHz]RDC [Ω] 2)A0 [mV/μT] 2)
16,2≥ 66@ 125 kHz≥ 8006627
67 45@ 20 kHz≥ 30023571

 

1) other inductances on request      185.xxx: without top coat

2) typical values                               186.xxx: with top coat