B65819N0250A048 - EPCOS AG

Data SheetData Sheet

Date: September 2006

 EPCOS AG 2006. Reproduction, publication and dissemination of this data sheet and the

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

Ferrites and accessories

RM 7, RM 7 LP

Cores and accessories

Series/Type: B65819, B65820, B65659

209/06

Please read Cautions and warnings and

Important notes at the end of this document.

■To IEC 62317-4

■Core without center hole

for transformer applications

■Delivery mode: sets

Magnetic characteristics (per set)

Approx. weight (per set)

Gapped

Ungapped

with

center hole

without

center hole

Σ l/A

Amin

0.75

29.8



1190

0.7

30.4

1310

mm–1

mm2

mm3

m6.5 7.2 g

Material AL value

approx.

µeOrdering code 1)

-A with center hole

-N with threaded sleeve

-J without center hole

N41 160 ±5% 0.30 90 B65819J0160J041

250 ±5% 0.18 141 B65819J0250J041

N48 250 ±3% 0.16 148 B65819+0250A048

315 ±3% 0.12 187 B65819+0315A048

Material AL value

µePV

W/set

Ordering code

-J without center hole

N30 5000 +30/–20% 2810 B65819J0000R030

T38 10000 +40/–30% 5630 B65819J0000Y038

N49 1900 +30/–20% 1070 < 0.22 ( 50 mT, 500 kHz, 100 °C) B65819J0000R049

N87 2700 +30/–20% 1520 < 0.77 (200 mT, 100 kHz, 100 °C) B65819J0000R087

N97 2700 +30/–20% 1520 < 0.58 (200 mT, 100 kHz, 100 °C) B65819J0000R097

FRM0171-Q

8,4+0,5

11,3±0,25

ø14,75+0,65

ø3+0,1

2,5±0,15

9,3 min.

0,717,2

17,2 0,7

0,820,3

13,5 0,2

ø7,25 0,3

1) Replace the + by the code letter “A” or “N” for the required version.

B65819Core

RM 7

309/06

Please read Cautions and warnings and

Important notes at the end of this document.

Coil former

Material: GFR thermosetting plastic (UL 94 V-0, insulation class to IEC 60085:

H max. operating temperature 180 °C), color code black

Sumikon PM 9630 ® [E41429 (M)], SUMITOMO BAKELITE CO LTD

Solderability: to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 °C, 2 s

Resistance to soldering heat: to IEC 60068-2-20, test Tb, method 1B: 350 °C, 3.5 s

Winding: see Data Book 2007, chapter “Processing notes, 2.1”

Squared pins.

For matching clamp and insulating washers see page 4.

Sections AN

mm2

AR value

µΩ

Pins Ordering code

122.4 36.0 55.4 8B65820W1008D001

221.9 36.0 56.5 8B65820W1008D002

FRM0314-J-E

0.25

ø1.3+0.1

2x ground

1.3

0.45

8.25 0.1

ø14.65

ø7.3+0.15

ø8.3 0.1

0.25

4.8±0.3

View in mounting direction

Hole arrangement

0.75±0.05

1±0.1

Pin 1

marking

2.54

0.15

+0.05

0.45

0.15

0.45

+0.05

ø1+0.1

B65820Accessories

RM 7

409/06

Please read Cautions and warnings and

Important notes at the end of this document.

Clamp

■With ground terminal, made of spring steel (tinned), 0.4 mm thick

■Solderability to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 °C, 2 s

Insulating washer 1 between core and coil former

■For tolerance compensation and for insulation

■Made of polycarbonate (UL 94 V-0, insulation class to IEC 60085: E 120 °C), 0.08 mm thick

Aryphan F685, [E167358 (M)], natural color, LOFO HIGH TECH FILM GMBH

Insulating washer 2 for double-clad PCBs

■Made of polycarbonate (UL 94 V-0, insulation class to IEC 60085: E 120 °C), 0.3 mm thick

Makrofol DPF 5026, [E41613 (M)], natural color, BAYER MATERIALSCIENCE AG

Clamp Insulating washer 1 Insulating washer 2

Ordering code

Clamp (ordering code per piece, 2 are required) B65820B2001X000

Insulating washer 1 (reel packing, PU = 1 reel) B65820A5000X000

Insulating washer 2 (bulk) B65820C2005X000

FRM0090-Q

10,6+0,3

4,5±0,25

2,3±0,1

0,6x0,4

0,7±20,7±2

(preliminary data)

B65820Accessories

RM 7

509/06

Please read Cautions and warnings and

Important notes at the end of this document.

Adjusting screw

■Tube core with thread and core brake made of GFR polyterephthalate

Pocan B3235 ® [E245249 (M)], LANXESS AG

Figure Tube core Ordering code

∅ × length (mm) Material Color code

a2.62 × 3.6 N22 red B65659F0001X023

b2.75 × 4.4 N22 black B65659F0003X023

B65659Accessories

RM 7

609/06

Please read Cautions and warnings and

Important notes at the end of this document.

■To IEC 62317-4

■For compact transformers

■Without center hole

■Delivery mode: sets

Magnetic characteristics (per set)

Σ l/A= 0.52 mm

–1

le= 23.5 mm

Ae= 45.3 mm2

Amin = 39.6 mm2

Ve= 1060 mm3

Approx. weight 5.7 g/set

Ungapped

Material AL value

µePV

W/set

Ordering code

T38 11500 +40/–30% 4750 B65819P0000Y038

N49 2400 +30/–20% 990 < 0.21 ( 50 mT, 500 kHz, 100 °C) B65819P0000R049

N92 2600 +30/–20% 1070 < 0.63 (200 mT, 100 kHz, 100 °C) B65819P0000R092

N87 3300 +30/–20% 1360 < 0.57 (200 mT, 100 kHz, 100 °C) B65819P0000R087

B65819PCore

RM 7

709/06

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 Data Book 2007, chapter “General – Definitions, 8.1”.

Effects of core combination on AL value

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 Data Book 2007, chapter “General – Definitions, 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 Data Book 2007, chapter “Processing notes, 2.2”.

– 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.

809/06

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 passive 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 a passive 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 a passive 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.

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, EPCOS-JONES, Baoke, Alu-X, CeraDiode, CSSP, MLSC,

PhaseCap, PhaseMod, SIFI, SIFERRIT, SIKOREL, SilverCap, SIMID, SIOV, SIP5D, SIP5K,

UltraCap, 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.