B82801B0205A100 - EPCOS AG - Product.Network

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¤EPCOS AG 2012. Reproduction, publication and dissemination of this publication, enclosures

hereto and the information contained therein without EPCOS’ prior express consent is prohibited.

SMT current sense transformers

EE 5.0 core

Series/Type: B82801B

Date: December 2012

212/12

Please read Cautions and warnings and

Important notes at the end of this document.

Application

■Switching power supplies

■Feedback control

■Overload sensing

■Load drop/shut down detection

Features

■Very low DC resistance

■Different turns ratios

■Small package

■Other pinning on request

■RoHS compatible

Marking

Middle block of ordering code

Delivery mode and packing units

■16 mm blister tape, 330 mm reel

■Carton packaging

■Packing units: 900 pcs./reel;

7200 pcs./carton

B82801BSMT current sense transformers

EE 5.0

312/12

Please read Cautions and warnings and

Important notes at the end of this document.

Dimensional drawing

Application circuit and pinning

Dimensions in mm

B82801B

EE 5.0

SMT current sense transformers

412/12

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Important notes at the end of this document.

Technical data and measuring conditions

Frequency range 50 kHz ... 1 MHz

Hi-pot 1000 V AC, 2 s (winding to winding)

Inductance L (1-3) 100 kHz, 100 mV, @ +25 °C

DC resistance Rmax Measured at +25 °C

Sensed current The max. primary current of 20 A causes approx. +40 °C

temperature rise

Solderability t99.9 Sn, lead-free. Or

Sn96.5Ag3.0Cu0.5: +(245 r5°C, (3 r03) s

Wetting of soldering area t 95%

(to IEC 60068-2-58)

Resistance to soldering heat +(260 r 5) °C, (10 r1) s to IEC 60068-2-58

Storage conditions –20 °C … +40 °C, d75% RH (packaged)

Test voltage Vtest 50 Hz, 1 s

Operating temperature range 40 °C … +125 °C

Weight Approx. 0.4 g

B82801B

EE 5.0

SMT current sense transformers

512/12

Please read Cautions and warnings and

Important notes at the end of this document.

With:

Bmax Maximum magnetic flux density in the ferrite core of the current sense transformer

Vsense,max Maximum output voltage of the measurement signal

Gmax Maximum duty cycle

nsNumber of turns of the secondary winding of the current sense transformer

AeEffective magnetic area of the ferrite core

fosc Operating frequency of the switching operator IC

Typical value for Ae: 2.5 x 10-6 m2

Typical Bmax: 200 mT

With:

RTResistance of burden resistor

Vsense,max Maximum output voltage of the measurement signal

nsNumber of turns on the secondary side of the CT

Iprim,max Maximum primary current (peak current)

Characteristics and ordering codes

Lmin

Turns ratio

Np : Ns

DC resistance

Rmax (m:)

Voltage-

time product

V  μs

Recomm.

Ordering code

primary secondary

80 1 : 20 0.6 400 10.0 20 B82801B0803A020

180 1 : 30 0.6 870 15.0 30 B82801B0184A030

320 1 : 40 0.6 1140 20.0 40 B82801B0324A040

500 1 : 50 0.6 1500 25.0 50 B82801B0504A050

720 1 : 60 0.6 1980 30.0 60 B82801B0724A060

980 1 : 70 0.6 3000 35.0 70 B82801B0984A070

2000 1 : 100 0.6 5500 50.0 100 B82801B0205A100

3000 1 : 125 0.6 6500 62.5 125 B82801B0305A125

8000 1 : 200 0.6 33240 100.0 200 B82801B0925A200

Bmax

Vsense maxGmax



nsAefosc



-----------------------------------------

Vsense maxns



Iprim max

-----------------------------------

B82801B

EE 5.0

SMT current sense transformers

612/12

Please read Cautions and warnings and

Important notes at the end of this document.

Taping and packing

Blister tape

Reel

Dimensions in mm

B82801B

EE 5.0

SMT current sense transformers

712/12

Please read Cautions and warnings and

Important notes at the end of this document.

Recommended reflow soldering curve

Pb-free solder material (based on JEDEC J-STD 020D)

Max. time from +25 °C to T: 300 seconds

Max. 3 reflow cycles

°C

T3T4T1T2

sec

sec°C °C sec

150 200 217 245 <110 <90 20 ... 40

IND0814-F

B82801B

EE 5.0

SMT current sense transformers

812/12

Cautions and warnings

■Please note the recommendations in our Inductors data book (latest edition) and in the data

sheets.

– Particular attention should be paid to the derating curves given there. Derating must be applied

in case the ambient temperature in the application exceeds the rated temperature of the

component.

– Ensure the operation temperature (which is the sum of the ambient temperature and the

temperature rise caused by losses / self-heating) of the component in the application does not

exceed the maximum value specified in the climatic category.

– The soldering conditions should also be observed. Temperatures quoted in relation to wave

soldering refer to the pin, not the housing.

■If the components are to be washed varnished it is necessary to check whether the washing

varnish agent that is used has a negative effect on the wire insulation, any plastics that are used,

or on glued joints. In particular, it is possible for washing varnish agent residues to have a

negative effect in the long-term on wire insulation.

Washing processes may damage the product due to the possible static or cyclic mechanical

loads (e.g. ultrasonic cleaning). They may cause cracks to develop on the product and its parts,

which might lead to reduced reliability or lifetime.

■The following points must be observed if the components are potted in customer applications:

– Many potting materials shrink as they harden. They therefore exert a pressure on the plastic

housing or core. This pressure can have a deleterious effect on electrical properties, and in

extreme cases can damage the core or plastic housing mechanically.

– It is necessary to check whether the potting material used attacks or destroys the wire

insulation, plastics or glue.

– The effect of the potting material can change the high-frequency behaviour of the components.

■Ferrites are sensitive to direct impact. This can cause the core material to flake, or lead to

breakage of the core.

■Even for customer-specific products, conclusive validation of the component in the circuit can

only be carried out by the customer.

Please read Cautions and warnings and

Important notes at the end of this document.

912/12

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

requirements 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 incumbent on the

customer to check and decide whether an EPCOS product with the properties described 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 life-saving 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

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

detailed 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 foregoing 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, BAOKE, Alu-X, CeraDiode, CeraLink, CSMP, CSSP, CTVS,

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

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

SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, SIP5D, SIP5K, 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.