B64290L0652X038 [TDK]

Ferrites and accessories;


型号：	B64290L0652X038
厂家：	TDK ELECTRONICS
描述：	Ferrites and accessories
文件：	总7页 (文件大小：156K)
中文：	中文翻译
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Ferrites and accessories

Toroids

R 17.0 × 10.7 × 6.80

Series/Type:

B64290L0652

Date:

July 2014

Data Sheet

 EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the information

contained therein without EPCOS' prior express consent is prohibited.

EPCOS AG is a TDK Group Company.

R 17.0 × 10.7 × 6.80

B64290L0652

■ Epoxy coating

R 17.0 × 10.7 × 6.80 (mm)

R 0.669 × 0.421 × 0.268 (inch)

Dimensions

d_a(mm)

d_i(mm)

Height (mm) d_a(inch)

d_i(inch)

Height (inch)

17.0 ±0.4

10.7 ±0.3

6.80 ±0.2

0.669 ±0.016 0.421 ±0.012 0.268 ±0.008 uncoated¹⁾

18.2 max. 9.6 min.

7.8 max.

0.717 max. 0.378 min. 0.307 max. coated

Characteristics and ordering codes

Mate- A_Lvalue

rial

μ_i

Ordering code

Magnetic characteristics

Approx.

weight

(approx.)

Σl/A

mm^–1mm

42.00

l_e

A_e

V_e

mm²

mm³

N87 1390 ±25%

N30 2710 ±25%

2200

4300

5200

6000

6500

B64290L0652X087 2.00

B64290L0652X830

B64290L0652X065

B64290L0652X035

B64290L0652X037

B64290L0652X038

21.04

884

4.4

T65

T35

T37

T38

3250 ±30%

3770 ±25%

4080 ±25%

6280 ±30% 10000

N87: P_V(200 mT, 100 kHz, 100 °C) < 0.55 W/core

1) On request

Please read Cautions and warnings and

Important notes at the end of this document.

07/14

Ferrites and accessories

Cautions and warnings

Mechanical stress and mounting

Ferrite cores have to meet mechanical requirements during assembling and for a growing number

of applications. Since ferrites are ceramic materials one has to be aware of the special behavior

under mechanical load.

As valid for any ceramic material, ferrite cores are brittle and sensitive to any shock, fast changing

or tensile load. Especially high cooling rates under ultrasonic cleaning and high static or cyclic loads

can cause cracks or failure of the ferrite cores.

For detailed information see chapter “Definitions”, section 8.1.

Effects of core combination on A_Lvalue

Stresses in the core affect not only the mechanical but also the magnetic properties. It is apparent

that the initial permeability is dependent on the stress state of the core. The higher the stresses are

in the core, the lower is the value for the initial permeability. Thus the embedding medium should

have the greatest possible elasticity.

For detailed information see chapter “Definitions”, section 8.2.

Heating up

Ferrites can run hot during operation at higher flux densities and higher frequencies.

NiZn-materials

The magnetic properties of NiZn-materials can change irreversible in high magnetic fields.

Processing notes

– The start of the winding process should be soft. Else the flanges may be destroid.

– To strong winding forces may blast the flanges or squeeze the tube that the cores can no more

be mount.

– To long soldering time at high temperature (>300 °C) may effect coplanarity or pin arrangement.

– Not following the processing notes for soldering of the J-leg terminals may cause solderability

problems at the transformer because of pollution with Sn oxyd of the tin bath or burned insulation

of the wire. For detailed information see chapter “Processing notes”, section 8.2.

– The dimensions of the hole arrangement have fixed values and should be understood as

a recommendation for drilling the printed circuit board. For dimensioning the pins, the group

of holes can only be seen under certain conditions, as they fit into the given hole arrangement.

To avoid problems when mounting the transformer, the manufacturing tolerances for positioning

the customers’ drilling process must be considered by increasing the hole diameter.

07/14

Ferrites and accessories

Symbols and terms

Symbol

Meaning

Unit

Cross section of coil

mm²

A_e

A_L

A_L1

A_min

A_N

A_R

Effective magnetic cross section

Inductance factor; A_L= L/N²

Minimum inductance at defined high saturation ( μ_a)

Minimum core cross section

Winding cross section

Resistance factor; A_R= R_Cu/N²

RMS value of magnetic flux density

Flux density deviation

mm²

μΩ = 10^–6

Vs/m², mT

F = As/V

mm^–4.5

ΔB

Peak value of magnetic flux density

Peak value of flux density deviation

DC magnetic flux density

Remanent flux density

ΔB

B_DC

B_R

B_S

C₀

CDF

Saturation magnetization

Winding capacitance

Core distortion factor

Relative disaccommodation coefficient DF = d/μ_i

Disaccommodation coefficient

Activation energy

E_a

Frequency

s^–1, Hz

f_cutoff

f_max

f_min

f_r

Cut-off frequency

Upper frequency limit

Lower frequency limit

Resonance frequency

f_Cu

Copper filling factor

Air gap

RMS value of magnetic field strength

Peak value of magnetic field strength

DC field strength

A/m

H_DC

H_c

A/m

Coercive field strength

A/m

Hysteresis coefficient of material

Relative hysteresis coefficient

RMS value of current

10^–6cm/A

h/μ_i²

I_DC

Direct current

Peak value of current

Polarization

Vs/m²

Boltzmann constant

J/K

k₃

k_3c

Third harmonic distortion

Circuit third harmonic distortion

Inductance

H = Vs/A

07/14

Ferrites and accessories

Symbols and terms

Symbol

Meaning

Unit

ΔL/L

L₀

Relative inductance change

Inductance of coil without core

Main inductance

L_H

L_p

Parallel inductance

L_rev

L_s

Reversible inductance

Series inductance

l_e

Effective magnetic path length

Average length of turn

Number of turns

l_N

P_Cu

P_trans

P_V

Copper (winding) losses

Transferrable power

Relative core losses

mW/g

Performance factor

Quality factor (Q = ωL/R_s= 1/tan δ_L)

Resistance

R_Cu

R_h

Copper (winding) resistance (f = 0)

Hysteresis loss resistance of a core

R_hchange

ΔR_h

R_i

Internal resistance

R_p

Parallel loss resistance of a core

Series loss resistance of a core

Thermal resistance

R_s

R_th

R_V

K/W

Effective loss resistance of a core

Total air gap

°C

Temperature

ΔT

T_C

Temperature difference

Curie temperature

°C

Time

t_v

Pulse duty factor

tan δ

tan δ_L

tan δ_r

tan δ_e

tan δ_h

tan δ/μ_i

Loss factor

Loss factor of coil

(Residual) loss factor at H → 0

Relative loss factor

Hysteresis loss factor

Relative loss factor of material at H → 0

RMS value of voltage

Peak value of voltage

Effective magnetic volume

mm³

V_e

Complex impedance

Z_n

Normalized impedance |Z|_n= |Z| /N × (l_e/A_e)

Ω/mm

07/14

Ferrites and accessories

Symbols and terms

Symbol

Meaning

Unit

Temperature coefficient (TK)

1/K

α_F

α_e

ε_r

Relative temperature coefficient of material

Temperature coefficient of effective permeability

Relative permittivity

Magnetic flux

Efficiency of a transformer

η_B

η_i

Hysteresis material constant

mT^-1

A^–1H^–1/2

Hysteresis core constant

λ_s

Magnetostriction at saturation magnetization

Relative complex permeability

μ₀

μ_a

μ_app

μ_e

μ_i

Magnetic field constant

Vs/Am

Relative amplitude permeability

Relative apparent permeability

Relative effective permeability

Relative initial permeability

μ_p'

μ_p"

μ_r

Relative real (inductive) component of μ (for parallel components)

Relative imaginary (loss) component of μ (for parallel components)

Relative permeability

μ_rev

μ_s'

μ_s"

μ_tot

Relative reversible permeability

Relative real (inductive) component of μ (for series components)

Relative imaginary (loss) component of μ (for series components)

Relative total permeability

derived from the static magnetization curve

Resistivity

Ωm^–1

mm^–1

Σl/A

τ_Cu

Magnetic form factor

DC time constant τ_Cu= L/R_Cu= A_L/A_R

Angular frequency; ω = 2 Πf

s^–1

All dimensions are given in mm.

Surface-mount device

07/14

Important notes

The following applies to all products named in this publication:

1. Some parts of this publication contain statements about the suitability of our products for

certain areas of application. These statements are based on our knowledge of typical re-

quirements that are often placed on our products in the areas of application concerned. We

nevertheless expressly point out that such statements cannot be regarded as binding

statements about the suitability of our products for a particular customer application.

As a rule, EPCOS is either unfamiliar with individual customer applications or less familiar

with them than the customers themselves. For these reasons, it is always ultimately incum-

bent on the customer to check and decide whether an EPCOS product with the properties de-

scribed in the product specification is suitable for use in a particular customer application.

2. We also point out that in individual cases, a malfunction of electronic components or

failure before the end of their usual service life cannot be completely ruled out in the

current state of the art, even if they are operated as specified. In customer applications

requiring a very high level of operational safety and especially in customer applications in

which the malfunction or failure of an electronic component could endanger human life or

health (e.g. in accident prevention or lifesaving systems), it must therefore be ensured by

means of suitable design of the customer application or other action taken by the customer

(e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by

third parties in the event of malfunction or failure of an electronic component.

3. The warnings, cautions and product-specific notes must be observed.

4. In order to satisfy certain technical requirements, some of the products described in this

publication may contain substances subject to restrictions in certain jurisdictions (e.g.

because they are classed as hazardous). Useful information on this will be found in our Ma-

terial Data Sheets on the Internet (www.epcos.com/material). Should you have any more de-

tailed questions, please contact our sales offices.

5. We constantly strive to improve our products. Consequently, the products described in this

publication may change from time to time. The same is true of the corresponding product

specifications. Please check therefore to what extent product descriptions and specifications

contained in this publication are still applicable before or when you place an order. We also

reserve the right to discontinue production and delivery of products. Consequently, we

cannot guarantee that all products named in this publication will always be available. The

aforementioned does not apply in the case of individual agreements deviating from the fore-

going for customer-specific products.

6. Unless otherwise agreed in individual contracts, all orders are subject to the current version

of the "General Terms of Delivery for Products and Services in the Electrical Industry"

published by the German Electrical and Electronics Industry Association (ZVEI).

7. The trade names EPCOS, Alu-X, CeraDiode, CeraLink, CeraPlas, CSMP, CSSP, CTVS,

DeltaCap, DigiSiMic, DSSP, FilterCap, FormFit, MiniBlue, MiniCell, MKD, MKK, MLSC,

MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, PQSine, SIFERRIT, SIFI,

SIKOREL, SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, SIP5D, SIP5K, TFAP,

ThermoFuse, WindCap are trademarks registered or pending in Europe and in other

countries. Further information will be found on the Internet at www.epcos.com/trademarks.

07/14

B64290L0652X038 [TDK]

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