EMI Suppression Filters(EMC and Noise Suppression)

Outline of EMI Suppression Filters (EMC and Noise Suppression)Noise Filters For Audio Lines

NFZ_S series・LQW_CA series

The NFZ series of noise filters for audio lines were developed as filters that combine noise suppression and audio quality.
These filters provide Class D amp noise suppression, high frequency isolation, and TDMA noise suppression while maintaining audio quality in speaker and earphone lines.

Audio line filter product list

1. Communication frequency noise suppression for smart phones

NFZ03SG series
Product name	Stock Check	Impedance at900MHz(Ω)		Impedance at1.7GHz(Ω)	DC resistance(Ω)	Rated current (A)	Product size (max. height) (mm)
Product name	Stock Check	Typ.	Min.	Typ.	Typ.	Rated current (A)	Product size (max. height) (mm)
NFZ03SG331SN10	Buy now	330	200	400	0.46	0.305	0.6x0.3 (0.33)
NFZ03SG501SN10	Buy now	500	300	600	0.56	0.275
NFZ03SG671SN10	Buy now	670	400	800	0.69	0.25
NFZ03SG102SN10	Buy now	1000	600	900	1.00	0.21
NFZ03SG162SN10	Buy now	1600	960	1200	1.30	0.18

NFZ15SG series
Product name	Stock Check	Impedance at900MHz(Ω)		Impedance at1.7GHz(Ω)	DC resistance(Ω)	Rated current (A)	Product size (max. height) (mm)
Product name	Stock Check	Typ.	Min.	Typ.	Typ.	Rated current (A)	Product size (max. height) (mm)
NFZ15SG101SN11	Buy now	100	70	160	0.07	1.1	1.0x0.5 (0.55)
NFZ15SG151SN11	Buy now	150	100	250	0.09	1.0
NFZ15SG331SN11	Buy now	330	230	540	0.2	0.65
NFZ15SG771SN10	Buy now	770	530	900	0.35	0.5
NFZ15SG152SN10	Buy now	1500	1000	1200	0.55	0.4
NFZ15SG262SN10	Buy now	2600	1800	1450	0.8	0.35
NFZ15SG462SN10	Buy now	4600	2800	1800	1.25	0.27

Class D amp harmonic noise suppression
Product name	Stock Check	Impedance at100MHz(Ω)	DC resistance(Ω)	Rated current (A)		Product size (max. height) (mm)
Product name	Stock Check	Impedance at100MHz(Ω)	Typ.	85℃	125℃	Product size (max. height) (mm)
NFZ18SM121SN10	Buy now	120±25％	0.11	1.25	1.1	1.6x0.8 (0.95)
NFZ18SM251SN10	Buy now	250±25％	0.15	1.1	1.0
NFZ18SM501SN10	Buy now	500±25％	0.2	0.95	0.85
NFZ18SM701SN10	Buy now	700±25％	0.23	0.8	0.8

2. Noise suppression in high output audio

NFZ2MSD series
Product name	Stock Check	Impedance at10MHz(Ω)	DC resistance(mΩ)	Rated current (A)	Product size (max. height) (mm)
Product name	Stock Check	Impedance at10MHz(Ω)	Max	Rated current (A)	Product size (max. height) (mm)
NFZ2MSD100SN10 *currently under development as of September 2019		10±30%	20	5.2	2.0x1.6 (1.2)
NFZ2MSD150SN10	Buy now	15±30%	23	4.4
NFZ2MSD200SN10	Buy now	20±30%	28	3.9
NFZ2MSD300SN10	Buy now	30±30%	33	3.7
NFZ2MSD600SN10	Buy now	60±30%	54	2.7
NFZ2MSD900SN10	Buy now	90±30%	95	2
NFZ2MSD131SN10	Buy now	130±30%	144	1.5

NFZ2MSM series
Product name	Stock Check	Impedance at100MHz(Ω)	DC resistance(Ω)	Rated current (A)	Product size (max. height) (mm)
Product name	Stock Check	Impedance at100MHz(Ω)	Max	Rated current (A)	Product size (max. height) (mm)
NFZ2MSM101SN10	Buy now	100±25%	0.018	4	2.0x1.6 (1.0)
NFZ2MSM181SN10	Buy now	180±25%	0.025	3.4
NFZ2MSM301SN10	Buy now	300±25%	0.03	3.1
NFZ2MSM601SN10	Buy now	600±25%	0.046	2.5

NFZ32SW series
Product name	Stock Check	Impedance at1MHz(Ω)	Impedance at100MHz	DC resistance(Ω)	Rated current (A)	Product size (max. height) (mm)
Product name	Stock Check	Impedance at1MHz(Ω)	Typ.	Max	Rated current (A)	Product size (max. height) (mm)
NFZ32SW301HN10	Buy now	3.2±30%	300	0.036	2.55	3.2x2.5 (1.55)
NFZ32SW901HN10	Buy now	6.8±30%	900	0.054	2.05	3.2x2.5 (1.55)

Audio line noise suppression

Inductors

Audio line noise inductor page

Audio line noise suppression for smart phones
(1) Problems

Audio line noise suppression for smart phones
(2) Countermeasures

Audio line noise suppression for home audio
(1) Audio line

Audio line noise suppression for home audio
(2) Power supply line

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