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ER Core Specs for Engineers

This document provides information on Ferroxcube ER35/21/11 cores, including: 1) Specifications for the effective core parameters, dimensions, mass, and AL (inductance) values. 2) Properties of core sets under power conditions, including core loss values at different frequencies and flux densities. 3) Definitions of the data sheet and product status to indicate whether specifications are preliminary or final. 4) Disclaimer information and definitions of product status indications.

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51 views3 pages

ER Core Specs for Engineers

This document provides information on Ferroxcube ER35/21/11 cores, including: 1) Specifications for the effective core parameters, dimensions, mass, and AL (inductance) values. 2) Properties of core sets under power conditions, including core loss values at different frequencies and flux densities. 3) Definitions of the data sheet and product status to indicate whether specifications are preliminary or final. 4) Disclaimer information and definitions of product status indications.

Uploaded by

ameer4009 ahmed
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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FERROXCUBE

DATA SHEET

ER35/21/11
ER cores
Supersedes data of September 2004 2008 Sep 01
Ferroxcube

ER cores ER35/21/11

CORE SETS
Effective core parameters

SYMBOL PARAMETER VALUE UNIT


Σ(I/A) core factor (C1) 0.849 mm−1 handbook, halfpage
14.75
Ve effective volume 9710 mm3 0.35 20.7
0.2
Ie effective length 90.8 mm
Ae effective area 107 mm2
Amin minimum area 100 mm2
35 0.65
m mass of core half ≈ 23 g
26.15 0.55
11.3 0.25

11.4
0.35

MGC304

Dimensions in mm.

Fig.1 ER35/21/11 core half.

Core halves
Clamping force for AL measurements, 40 ±20 N. Gapped cores are available on request.

AL AIR GAP
GRADE µe TYPE NUMBER
(nH) (µm)
3C90 2800 ±25% ≈ 1900 ≈0 ER35/21/11-3C90
3C94 2800 ±25% ≈ 1900 ≈0 ER35/21/11-3C94

Properties of core sets under power conditions

B (mT) at CORE LOSS (W) at

GRADE H = 250 A/m; f = 25 kHz; f = 100 kHz; f = 100 kHz;


f = 25 kHz; B̂ = 200 mT; B̂ = 100 mT; B̂ = 200 mT;
T = 100 °C T = 100 °C T = 100 °C T = 100 °C
3C90 ≥320 ≤ 1.2 ≤ 1.3 −
3C94 ≥320 − ≤ 0.95 ≤ 5.8

2008 Sep 01 776


Ferroxcube

ER cores ER35/21/11

DATA SHEET STATUS DEFINITIONS

DATA SHEET PRODUCT


DEFINITIONS
STATUS STATUS
Preliminary Development This data sheet contains preliminary data. Ferroxcube reserves the right to
specification make changes at any time without notice in order to improve design and
supply the best possible product.
Product specification Production This data sheet contains final specifications. Ferroxcube reserves the right
to make changes at any time without notice in order to improve design and
supply the best possible product.

DISCLAIMER
Life support applications  These products are not designed for use in life support appliances, devices, or systems
where malfunction of these products can reasonably be expected to result in personal injury. Ferroxcube customers
using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Ferroxcube
for any damages resulting from such application.

PRODUCT STATUS DEFINITIONS

STATUS INDICATION DEFINITION


These are products that have been made as development samples for the purposes of
Prototype technical evaluation only. The data for these types is provisional and is subject to
change.
Design-in These products are recommended for new designs.
These products are recommended for use in current designs and are available via our
Preferred
sales channels.
These products are not recommended for new designs and may not be available
Support
through all of our sales channels. Customers are advised to check for availability.

2008 Sep 01 777

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