Tunable Low Profile

RF Inductors 148 Series

0.300″ / 7,6 height is ideal for low profile applications
Windings are precision molded into plastic for mechanical and electrical stability
Threaded Carbonyl J core with a slotted socket
Extremely economical, even in small quantities
RoHS-compliant. Tin-silver over copper terminations.
Samples of all values are available in Coilcraft Designer's Kit M304
Tune with our handy 3-in-1 "TriTuner" tuning tool

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Count	Unit price
1	$3.19
100	$2.62
250	$1.84
500	$1.36
1000	$0.96
2500	$0.57
5000	$0.43

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

Core

Standard

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Designer's Kit:

Kit	Values	Price
M304	33 (3 of each)	$60.00

Specifications

Electrical specifications at 25°C.

Part number 1	Color	Turns	Inductance (nH) 2				Test frequency (MHz)	Q min at L nom 3	SRF min (MHz)
Part number 1	Color	Turns	No core nom	min 4	nom	max	Test frequency (MHz)	Q min at L nom 3	SRF min (MHz)
148-01J12L	Brown	1½	35	38	39	40	50.0	88	3200
148-02J12L	Red	2½	44	46	52	58	50.0	96	1560
148-03J12L	Orange	3½	56	60	73	86	50.0	106	1200
148-04J12L	Yellow	4½	74	77	101	125	50.0	112	980
148-05J12L	Green	5½	92	96	130	164	50.0	112	820
148-06J12L	Blue	6½	114	120	170	220	50.0	112	720
148-07J12L	Violet	7½	142	154	222	290	50.0	110	620
148-08J12L	Gray	8½	168	176	262	346	25.0	106	570
148-09J12L	White	9½	198	208	310	410	25.0	104	490
148-10J12L	Black	10½	237	250	375	500	25.0	90	450
148-11J12L	Brown	11½	276	290	435	580	25.0	84	410
148-12J12L	Red	12½	315	338	500	666	25.0	66	350
148-13J12L	Orange	13½	344	362	540	710	25.0	64	320

Notes

To order fixed inductance parts without cores, eliminate the “J12”, e.g. 148-13L.
Inductance readings taken at test frequency on an Agilent/HP 4342A Q meter with 1/2″ long, 16 AWG tinned copper wire soldered along the leads and bent at 90°, 1/4″ from standoffs. Inductance values at 50 MHz calculated from Cp readings. Inductance values at 25 MHz read at standard Q meter frequency (blue line)
Q readings taken at test frequency on an Agilent/HP 4342A Q meter with 1/2″ long, 16 AWG tinned copper wire soldered along the leads and bent at 90°, 1/4″ from standoffs.
L min measured with core halfway out top of form. L max measured with core centered in the windings.

Termination:

Tin-silver over copper

Environmental

Environmental:

RoHS compliant

Ambient temperature range:

−40°C to +85°C

Storage temperature range:

Component: −40°C to +85°C
Packaging tubes: −40°C to +80°C

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

See FIT/MTBF Calculations

Physical characteristics

General specification

Core Material:

Carbonyl J. Core length: 0.375 in / 9,5 mm

Weight:

0.7 – 1.2 g

Packaging:

30 per tube

Soldering/Washing

Resistance to soldering heat:

Wave solder only. Recommended maximum board surface temperature of 168°C (334°F) for no more than three seconds. Pre-heating is recommended to minimize time over the solder nozzle.

Refer to Soldering Coilcraft Components before soldering.

PCB Washing:

Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

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