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© Coilcraft Inc. 2013

This product may not be used in medical or high

risk applications without prior Coilcraft approval.

Specification subject to change without notice.

Please check web site for latest information.

RFID Transponder Coils –4312RV

Document 461-1

The 4312RV series of transponder coils is designed for

RFID applications at 125 kHz. It is Coilcraft’s smallest

transponder coil developed specifically for the harshest

mechanical environments.

The coil is wound on a plastic base, providing great du-

rability and allowing this part to withstand physical shock.

With operating temperature range to 125°C, these parts

pass AEC-200 Grade 1 (-40°C to +125°C) qualification

and are ideal for use in a wide range of automotive ap-

plications. The uniquely shaped termination provides

excellent board adhesion.

In addition to our standard models, Coilcraft can also

design transponder coils to operate at other frequencies.

To request free evaluation samples, contact Coilcraft or

visit

www.coilcraft.com.

Read

Matching

at 125 kHz

±2% (mH)

(inches/cm)

(mV/µT)

(pF)

(Ohms)

(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

packaging code:

4312RV-725XGLD

Packaging: D = 13

″ machine-ready reel. EIA-481 embossed plastic

tape (3000 parts 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.

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 on micro-ohmmeter.

7. SRF measured using Agilent/HP 8753D network analyzer.

8. Electrical specifications at 25°C

Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

Document 461-1 Revised 10/30/08

Weight 210 – 240 mg

Ambient temperature –40°C to +125°C

Storage temperature Component: –40°C to +125°C.

Tape and reel packaging: –40°C to +80°C

Resistance to soldering heat Max three 40 second reflows at

+260°C, parts cooled to room temperature between cycles

Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /

85% relative humidity)

Temperature coefficient of inductance +300 to +1100 ppm/°C

Failures in Time (FIT) / Mean Time Between Failures (MTBF)

One per billion hours / one billion hours, calculated per Telcordia SR-332

Packaging 3000 per 13

″ reel Plastic tape: 24 mm wide,

0.3 mm thick, 8 mm pocket spacing, 2.49 mm pocket depth

PCB washing Tested with pure water or alcohol only. For other solvents,

see Doc787_PCB_Washing.pdf.