Elementy elektroniczne

Cewki dla systemów identyfikacji i lokalizacji

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 Fresaccording 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)

Cewki

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

 

Range 186.0xx DW-111)
Q   fres [kHz] RDC [Ω] 2) A0 [mV/μT] 2)
≥ 20 @ 125 kHz ≥ 2000 6,1 8,5
≥ 35 @ 125 kHz ≥ 500 35 30
≥ 41 @ 125 kHz ≥ 560 97 51
≥ 40 @ 125 kHz ≥ 450 128 55,7
≥ 8 @ 20 kHz ≥ 220 360 16,7

Cewki rysunek techniczny

 

Range 186.05x DW-81)
L [mH] Q   fres [kHz] RDC [Ω] 2) A0 [mV/μT] 2)
2,37 ≥ 25 @ 125 kHz 750 47 18
3,155 ≥ 25 @ 125 kHz  1200 68 21
4,91 ≥ 25 @ 125 kHz 950 106 26
7,2 ≥ 20 @ 125 kHz  1000 173 32
8,8 ≥ 25 @ 125 kHz 950 192 35
12,7 ≥ 25 @ 125 kHz 800 297 42
16,2 ≥ 25 @ 125 kHz 700 333 48

 

Cewki rysunek techniczny1



 

 

 

 

 

 

Range 185.4xx / 186.4xx High End1)
L [mH] Q   fres [kHz] RDC [Ω] 2) A0 [mV/μT] 2)
1,056 ≥ 25 @ 125 kHz ≥ 670 23 21
3,155 ≥ 31 @ 125 kHz ≥ 550 50 42
9,5 ≥ 10 @ 20 kHz ≥ 230 86 100


Cewki rysunek techniczny3



 

 

 

Range 185.2xx Classic1)
L [mH] Q   fres [kHz] RDC [Ω] 2) A0 [mV/μT] 2)
1,056 ≥ 38 @ 125 kHz ≥ 700 16 18
2,4 ≥ 25 @ 125 kHz ≥ 400 43 28
4,91 ≥ 15 @ 125 kHz ≥ 290 51 43
9,5 ≥ 8 @ 20 kHz ≥ 340 71 58

Cewki rysunek techniczny4

 

 

 

 

 

 

1) other inductances on request 185.xxx: without top coat
2) typical values 186.xxx: with top coat