RFS1317 Series

Shielded Power Inductors

Coilcraft RFS1317 Series through-hole power inductors provide rugged, low-cost, shielded solutions for a variety of choke applications. They come in a wide range of inductance values covering three sizes / series.

Low cost, high efficiency
Rugged TH mount construction
Ferrite core for flat L vs I
Magnetic shielding to minimize EMI

Buy Now:

Part number

Find my part

Count	Unit price
1	$2.80
144	$1.93
288	$1.45
500	$0.92
1000	$0.69
2500	$0.60

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

Tolerance

K = 10%

Termination

L = Tin-silver over tin over copper over steel

. in stock, ready to ship today.

Request a Sample:

Part number

Find my part

Specifications

Electrical specifications at 25°C.

Part number 1	Inductance (mH) 2 (Tolerance: ±10%)	DCR max (Ω) 3	SRF typ (MHz) 4	Isat (A) 5			Irms (A) 6
Part number 1	Inductance (mH) 2 (Tolerance: ±10%)	DCR max (Ω) 3	SRF typ (MHz) 4	10% drop	20% drop	30% drop	20°C rise	40°C rise
RFS1317-273KL	0.027	0.033	21.0	5.2	6.4	7.2	4.1	5.7
RFS1317-333KL	0.033	0.050	18.2	4.5	5.7	6.4	3.6	4.9
RFS1317-473KL	0.047	0.055	12.9	3.9	4.7	5.4	3.2	4.5
RFS1317-683KL	0.068	0.068	6.5	3.1	3.8	4.3	3.0	4.1
RFS1317-823KL	0.082	0.071	5.0	2.8	3.6	4.0	2.8	3.9
RFS1317-104KL	0.100	0.079	3.5	2.6	3.2	3.6	2.7	3.7
RFS1317-124KL	0.12	0.11	3.2	2.4	2.9	3.2	2.2	3.2
RFS1317-154KL	0.15	0.14	2.9	2.2	2.6	2.9	2.1	2.9
RFS1317-184KL	0.18	0.17	2.3	1.9	2.4	2.7	1.9	2.7
RFS1317-224KL	0.22	0.24	2.0	1.7	2.1	2.4	1.5	2.1
RFS1317-274KL	0.27	0.26	1.9	1.7	1.9	2.2	1.5	2.1
RFS1317-334KL	0.33	0.29	1.8	1.5	1.7	2.0	1.4	1.9
RFS1317-394KL	0.39	0.32	1.7	1.3	1.6	1.8	1.4	1.9
RFS1317-474KL	0.47	0.41	1.5	1.3	1.4	1.6	1.1	1.6
RFS1317-564KL	0.56	0.52	1.4	1.1	1.3	1.5	0.95	1.4
RFS1317-684KL	0.68	0.62	1.2	1.0	1.2	1.4	0.86	1.2
RFS1317-824KL	0.82	0.83	0.99	0.89	1.0	1.2	0.75	1.0
RFS1317-105KL	1.0	1.0	0.94	0.83	1.0	1.1	0.68	0.97
RFS1317-125KL	1.2	1.2	0.73	0.72	0.94	1.0	0.60	0.81
RFS1317-155KL	1.5	1.4	0.73	0.66	0.82	0.91	0.59	0.78
RFS1317-185KL	1.8	1.5	0.72	0.60	0.78	0.87	0.54	0.74
RFS1317-225KL	2.2	2.0	0.69	0.56	0.69	0.77	0.45	0.62
RFS1317-275KL	2.7	2.2	0.48	0.51	0.62	0.70	0.43	0.61
RFS1317-335KL	3.3	2.4	0.24	0.46	0.61	0.68	0.41	0.57
RFS1317-395KL	3.9	3.4	0.47	0.41	0.51	0.57	0.34	0.49
RFS1317-475KL	4.7	3.7	0.47	0.38	0.48	0.54	0.33	0.46
RFS1317-565KL	5.6	4.0	0.47	0.34	0.44	0.49	0.32	0.46
RFS1317-685KL	6.8	5.4	0.25	0.32	0.40	0.45	0.26	0.38
RFS1317-825KL	8.2	5.9	0.48	0.31	0.39	0.44	0.25	0.35
RFS1317-106KL	10	6.6	0.29	0.28	0.33	0.37	0.24	0.35

Notes

When ordering, please specify termination code: e.g. RFS1317-106KL
Inductance tested at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR-meter or equivalent.
DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
SRF measured using an Agilent/HP 4191A or equivalent. Details
Isat: DC current at 25°C that causes the specified inductance drop from its value without current. Temperature derating curves.
Irms: Current that causes the specified temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings. Temperature derating curves.

Termination:

L = RoHS compliant tin-silver over tin over copper over steel.
T = RoHS tin-silver-copper (95.5/4/0.5). (Special order, added cost)
S = non-RoHS tin-lead (63/37). (Special order, added cost)

Environmental

Environmental:

RoHS compliant

Ambient temperature range:

–40°C to +85°C with Irms current

Storage temperature range:

Component: −40°C to +125°C
Packaging trays: −40°C to +80°C

Maximum part temperature:

+125°C (Ambient + temperature rise)

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

See FIT/MTBF Calculations

Performance curves

Inductance vs Current

Inductance vs Frequency

Physical characteristics

General specification

Core Material:

Ferrite

Weight:

9.1 – 9.4 g

Packaging:

144 parts per tray

Washing

Moisture Sensitivity Level (MSL):

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

PCB Washing:

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

RFS1317 Series

Shielded Power Inductors