3D Model Datasheet

4308RV Series

High Temperature RFID Transponder Coils

Our 4308RV Series High Temperature RFID transponder coils are designed for RFID applications at 125kHz. Their low profile and extended length allow longer read ranges and provide higher Q.

For RFID applications at 125kHz
Low profile and extended length allow longer read ranges and higher Q
Encapsulated top ensures reliable pick and place operations
Core and encapsulation rated for 125°C
For harsh environments like tire pressure monitoring systems, consider our 4312RV or 5315TC.

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Part number

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Count	Unit price
1	$1.27
750	$1.22
1500	$1.04
3000	$0.79
6000	$0.63

For high volume or non-stock items, request a quote.

Termination

L = Silver-palladium-platinum-glass frit

Packaging

D = 13" machine-ready reel

Tolerance

J = 5%

G = 2%

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Designer's Kit:

Kit	Values	Price
C383	16 (4 of each)	$80.00

Specifications

Electrical specifications at 25°C.

Part number 1	Inductance (mH) at 125 kHz 2	Tolerance (%) 3	Q min	Read distance (inch/cm) 4	Sensitivity (mV/µT) 5	Matching capacitor (pF) 6	DCR max (Ω) 7	SRF typ (kHz) 8	Color code
4308RV-374X_L_	0.37	5,2	26	22.01 / 55.9	9.82	4380	6.5	1800	Orange Violet Yellow
4308RV-404X_L_	0.40	5,2	26	22.99 / 58.4	10.38	4050	7.1	5000	Yellow Black Yellow
4308RV-704X_L_	0.70	5,2	20	25.0 / 63.5	13.96	2320	19.0	6600	Violet Black Yellow
4308RV-904X_L_	0.90	5,2	22	25.98 / 66.0	16.06	1800	21.0	4800	White Black Yellow
4308RV-115X_L_	1.08	5,2	24	30.0 / 76.2	17.78	1500	24.0	4300	Brown Brown Green
4308RV-205X_L_	1.97	5,2	28	34.02 / 86.4	24.9	823	31.0	1750	Red Black Green
4308RV-245X_L_	2.38	5,2	30	37.01 / 94.0	28.21	681	34.0	1700	Red Yellow Green
4308RV-295X_L_	2.89	5,2	30	37.01 / 94.0	32.12	561	42.0	1900	Red White Green
4308RV-335X_L_	3.30	5,2	30	37.99 / 96.5	34.96	491	48.0	1425	Orange Orange Green
4308RV-415X_L_	4.15	5,2	27	39.02 / 99.1	41.35	391	70.0	1620	Yellow Brown Green
4308RV-495X_L_	4.90	5,2	26	37.99 / 96.5	47.17	331	93.0	1150	Yellow White Green
4308RV-685X_L_	6.80	5,2	28	40.98 / 104.1	61.71	238	110	1080	Blue Gray Green
4308RV-715X_L_	7.10	5,2	27	42.01 / 106.7	65.6	228	114	1050	Violet Brown Green
4308RV-725X_L_	7.20	5,2	28	40.0 / 101.6	66.67	225	114	965	Violet Red Green
4308RV-815X_L_	8.10	5,2	28	42.01 / 106.7	75.08	200	125	965	Gray Brown Green
4308RV-905X_L_	9.00	5,2	30	40.0 / 101.6	84.64	180	125	725	White Black Green

Notes

When ordering, please specify tolerance and packaging codes: 4308RV-905XJLD.
Inductance and Q measured using Agilent/HP 4192A impedance analyzer.
Tolerances in bold are stocked for immediate shipment.
Read distance measured using the KEELOQ® Transponder Evaluation Kit part number DM303005 from Microchip. Distance was recorded as the voltage across the resonant circuit dropped below 10 mV.
Sensitivity measured in accordance with Coilcraft application note “Measuring Sensitivity of Transponder Coils.”
Matching capacitor value required for parallel resonant circuit operating at 125 kHz.
DCR measured on micro-ohmmeter.
SRF measured using Agilent/HP 8753D network analyzer

Tolerance:

G = 2%, J = 5%

Termination:

RoHS compliant silver-palladium-platinum-glass frit.

Packaging:

D = 13″ machine-ready reel. EIA-481 embossed plastic tape (3000 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to D.

Environmental

Environmental:

RoHS compliant

Ambient temperature range:

–40°C to +125°C

Storage temperature range:

Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C

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

See FIT/MTBF Calculations

Performance curves

L vs Frequency

Q vs Frequency

Physical characteristics

Tape and Reel specification

Parts per reel	Reel dimensions (mm)					Tape dimensions (mm)						Orientation
13" (330 mm)	A	B	C	D	E	W	P	Po	P1	H	T
3000	330	100	13	30,4	24,4	24	8	4	2	2,7	0,3

General specification

Weight:

230 – 250 mg

Packaging:

3000 per 13″ reel Plastic tape: 24 mm wide, 0.3 mm thick, 8 mm pocket spacing, 2.7 mm pocket depth

Temperature coefficient of inductance:

+200 to +700 ppm/°C

Soldering/Washing

Moisture Sensitivity Level (MSL):

1 (unlimited floor life at <30°C / 85% relative humidity)

Resistance to soldering heat:

Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles

Refer to Soldering Coilcraft Components before soldering.

PCB Washing:

Tested with pure water or alcohol only. More info

4308RV Series

High Temperature RFID Transponder Coils