Document 223
RFID Transponder Coils
Coilcraft’s new family of antenna coils are rugged, high
performance devices intended for RFID applications at
125 kHz.
These low profile parts have an extended length that
allows longer read ranges and higher Q. The coil is
constructed of ferrite laminated onto a ceramic base
which makes it more rugged and impact resistant than
all-ferrite constructions. An encapsulated top assures
reliable pick and place operations.
In addition to the standard models shown, Coilcraft can
design transponder coils designed to operate at other
frequencies.
For evaluation samples, please visit
www.coilcraft.com
or contact Coilcraft.
Part Number
4308TC-404XJD
4308TC-904XJD
4308TC-115XJD
4308TC-205XJD
4308TC-245XJD
4308TC-335XJD
4308TC-415XJD
4308TC-495XJD
4308TC-685XJD
4308TC-715XJD
4308TC-815XJD
Inductance
@125 kHz
1
(mH) ±5% Q min
1
0.40
15
0.90
15
1.08
15
1.97
17
2.38
17
3.30
17
4.15
17
4.90
17
6.80
17
7.10
17
8.10
17
Matching
capacitor
(pF)
4000
1800
1500
820
680
490
390
330
240
220
200
DCR
max
2
( )
7.4
22
25
34
39
51
74
96
112
115
123
1
SRF
min
3
(kHz)
4500
4000
4000
2400
2200
1800
1700
1300
1000
1000
960
1
1. Inductance and Q measured using HP4192A impedance analyzer. For
recommended test procedures, contact Coilcraft.
2. DCR measured on micro-ohmmeter.
3. SRF measured using HP8753D network analyzer.
4. Operating temperature range -40° C to +85° C.
5. Electrical specifications at 25° C.
Parts/reel: 13" 3000 Tape width: 24 mm
For packaging data see “Tape and Reel Specifications” (Doc. 173)
Specifications subject to change without notice.
Document 223
Revised 11/30/00
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