High Current Inductors

West Coast Magnetics' 323 series toroidal inductors are designed for switching power applications at frequencies up to 500 kilohertz. This inductor has an outstanding current rating for its size, high reliability, long service life and ability to handle very high peak currents without saturating. The continuous service temperature rating is 200 degrees C.

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Design Constants

Part Number	Inductance, minimum no DC (µH)	DCR (milliohms) Nom @ 20°C	Rated Rms Current (amps)	Mounted Coil Size Code	Bare Coil Size Code	Lead Diameter (inches)
323-1	60.0	79	4.5	KM-02	BC-02	.020
323-2	17.9	38	4.5	KM-01	BC-01	.020
323-3	34.3	60	4.5	KM-02	BC-02	.020
323-4	86.5	99	4.5	KM-03	BC-03	.020
323-5	22.3	31	6.0	KM-02	BC-02	.025
323-6	53.0	50	6.0	KM-03	BC-03	.025
323-7	124.5	88	6.0	KM-04	BC-04	.025
323-8	184.7	107	6.0	KM-05	BC-05	.025
323-9	254.9	129	6.0	KM-05	BC-07	.025
323-10	72.8	43	8.0	KM-04	BC-04	.032
323-11	143.6	53	8.0	KM-05	BC-05	.032
323-12	154.6	64	8.0	KM-05	BC-07	.032
323-13	32.1	25	8.0	KM-03	BC-03	.032
323-14	18.9	19	8.0	KM-02	BC-02	.032
323-15	68.8	27	13.0	KM-05	BC-05	.041
323-16	94.7	32	13.0	KM-05	BC-07	.041
323-17	43.1	22	13.0	KM-04	BC-04	.041
323-18	84.5	20	17.0	KM-05	BC-07	.051
323-19	38.7	13	17.0	KM-05	BC-05	.051
323-20	45.7	15	17.0	KM-05	BC-07	.051

Notes: RMS current rating is a suggested value only. It may require derating depending on magnitude and frequency of ripple current.

schematics

Bare Coil	Mounted Coil
click image to enlarge	click image to enlarge

Dimensions: Inches/mm

graphs
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