Datasheet > ESD-R-38D

ESD-R-38D

更新时间： 2024-11-06 02:55:35

品牌	Logo	应用领域
基美 - KEMET		/
页数	文件大小	规格书
10页	1064K
描述
Toroidal Cores

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中文翻译

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ESD-R-38D 数据手册

EMI Core

ESD-R Series Toroidal Cores

Overview

Beneﬁts

Applications

The KEMET ESD-R Series solid

toroidal cores are designed for use on

round cable. A wide range of MnZn

and NiZn options are available in Bare,

Coated, and Case types.

•ꢀ MnZnꢀ(≤ꢀ100ꢀMHz,ꢀAMꢀbandꢀrange)ꢀ

andꢀNiZnꢀ(≤ꢀ300ꢀMHz,ꢀFMꢀbandꢀ

range) options available

• Solid construction

• Bare, Coated, and Case types

available

• Consumer

electronics

Turns and Impedance Characteristics

Figure 1 – How to count turns

When the desired performance of an EMI core cannot

be obtained with a single pass through the core, the

impedance characteristics can be changed with multiple

turns.

A turn is counted by the number of lead-wire windings

which pass through the inner hole of the core. Windings

onꢀtheꢀoutsideꢀofꢀtheꢀcoreꢀdoꢀnotꢀcount.ꢀSeeꢀFigureꢀ1ꢀforꢀ

examples of one, two, and three turns.

Figure 2 – Relationship between impedance and turn count.

(Representative example: ESD-R-16C)

10000

Resonance point changes to lower band

Adding turns will result in higher impedance while also

loweringꢀtheꢀeffectiveꢀfrequencyꢀrange.ꢀSeeꢀFigureꢀ2ꢀforꢀ

an example.

1000

100

Core Material and Effective Frequency Range

There are two ferrite material options for

KEMET EMI Cores: Nickel-Zinc (Ni-Zn) and

Manganese-Zinc (Mn-Zn). Each core material

has a different resistance and effective

frequency range. The Mn-Zn core material

has lower resistance compared to the Ni-

Zn; therefore, be sure to provide adequate

insulation before use.

100

1000

Frequency (MHz)

Figure 3 – Effective band range of Mn-Zn and Ni-Zn ferrite core material.

(Representative example, measured with same-dimension ring core)

1000

AM band range

MnZn series core

FM band range

NiZn series core

Forꢀreference,ꢀtheꢀNi-Znꢀcoreꢀmaterialꢀisꢀ

typically effective for the frequencies in the

MHzꢀbandꢀrangeꢀsuchꢀasꢀtheꢀFM-band,ꢀwhileꢀ

the Mn-Zn core material is typically effective for

theꢀkHzꢀbandꢀrangeꢀsuchꢀasꢀtheꢀAM-band.ꢀSeeꢀ

Figureꢀ3.

100

It is recommended to verify actual

effectiveness in the target application with

measurements.

0.01

0.1

100

1000

Frequency (MHz)

One world. One KEMET

E5001_ESD-R • 3/28/2017

12 3 4 5 6 7...10

中文翻译

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与ESD-R-38D相关器件

型号	品牌	获取价格	描述	数据表
ESD-R-38D-B	NEC	获取价格	EMI Core
ESD-R-38D-B	KEMET	获取价格	KEMET, ESD-R-B, EMI Cores, Noise Suppression
ESD-R-38SR	KEMET	获取价格	KEMET, ESD-R-SR, EMI Cores, Commercial Grade
ESD-R-38SR-P	KEMET	获取价格	KEMET, ESD-R-SR, EMI Cores, Commercial Grade
ESDR420A0	LITTELFUSE	获取价格	Operation (Recycling - ON Time First) Upon application of input voltage, the output energi
ESDR420A1	LITTELFUSE	获取价格	Operation (Recycling - ON Time First) Upon application of input voltage, the output energi
ESDR420A4	LITTELFUSE	获取价格	Operation (Recycling - ON Time First) Upon application of input voltage, the output energi
ESDR420B1	LITTELFUSE	获取价格	Operation (Recycling - ON Time First) Upon application of input voltage, the output energi
ESDR420B4	LITTELFUSE	获取价格	Operation (Recycling - ON Time First) Upon application of input voltage, the output energi
ESDR421A1	LITTELFUSE	获取价格	Operation (Recycling - ON Time First) Upon application of input voltage, the output energi

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