EFD10-3F3-S

Transformer Cores, Full Core, EFD, EFD10, 3F3, 23.7 mm, 7.2 mm²

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: FERROXCUBE
Product type: Transformer Cores
Core Size: EFD10
Core Type: EFD
Core Material Grade: 3F3
Inductance Factor Al: 500nH
Effective Magnetic Path Length: 23.7mm
Ae Effective Cross Section Area: 7.2mm²

Delivery and price
Units per pack	250
Price	1.18 €
Current stock	10+
Lead time	30 days

Datasheet

## _**FERROXCUBE**_ 

**EFD10/5/3** EFD cores and accessories Supersedes data of February 2002 2004 Sep 01 

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Ferroxcube 

## EFD cores and accessories 

## EFD10/5/3 

## **CORES** 

## **Effective core parameters** 

|**SYMBOL**|**PARAMETER**|**VALUE**|**UNIT**|
|---|---|---|---|
|Σ(I/A)<br>|core factor(C1)<br>|3.29<br>|mm−1<br>|
|Ve|effective volume|171|mm3|
|Ie|effective length|23.7|mm|
|Ae|effective area|7.2|mm2|
|Amin|minimum area|6.5|mm2|
|m|mass of core half|≈0.45|g|



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handbook, halfpage<br>3.75<br>5.2   0.15<br>   0.1<br>10.5   0.3<br>7.65   0.25<br>4.55<br>   0.15<br>2.7<br>0.2<br>  0.1 1.45<br>  0.05<br>MGC338<br>Dimensions in mm.<br>Fig.1  EFD10/5/3 core half.<br>**----- End of picture text -----**<br>


## **Core sets** 

Clamping force for AL measurements, 10 ± 5 N. 

|Clamping fo|rce for ALmeasurements,|10±5 N.|||
|---|---|---|---|---|
|**GRADE**|**AL**<br>**(nH)**|µ**e**|**AIR GAP**<br>**(**µ**m)**|**TYPE NUMBER**|
|3C90|25±5%|≈66|≈610|EFD10/5/3-3C90-A25-S|
||40±8%|≈105|≈310|EFD10/5/3-3C90-A40-S|
||63±10%|≈165|≈170|EFD10/5/3-3C90-A63-S|
||585±25%|≈1510|≈0|EFD10/5/3-3C90-S|
|3C94|25±5%|≈66|≈610|EFD10/5/3-3C94-A25-S|
||40±8%|≈105|≈310|EFD10/5/3-3C94-A40-S|
||63±10%|≈165|≈170|EFD10/5/3-3C94-A63-S|
||585±25%|≈1510|≈0|EFD10/5/3-3C94-S|
|3C96|525±25%|≈1360|≈0|EFD10/5/3-3C96-S|
|3F3|25±5%|≈66|≈610|EFD10/5/3-3F3-A25-S|
||40±8%|≈105|≈310|EFD10/5/3-3F3-A40-S|
||63±10%|≈165|≈170|EFD10/5/3-3F3-A63-S|
||500±25%|≈1290|≈0|EFD10/5/3-3F3-S|
|3F35|400±25%|≈1030|≈0|EFD10/5/3-3F35-S|
|3F4|25±5%|≈66|≈570|EFD10/5/3-3F4-A25-S|
||40±8%|≈105|≈280|EFD10/5/3-3F4-A40-S|
||63±10%|≈165|≈150|EFD10/5/3-3F4-A63-S|
||280±25%|≈730|≈0|EFD10/5/3-3F4-S|
|3F45|280±25%|≈730|≈0|EFD10/5/3-3F45-S|



2004 Sep 01 

2 

Ferroxcube 

## EFD cores and accessories 

## EFD10/5/3 

## **Properties of core sets under power conditions** 

|**GRADE**|**B (mT) at**|**CORE LOSS (W) at**|**CORE LOSS (W) at**|**CORE LOSS (W) at**|**CORE LOSS (W) at**|
|---|---|---|---|---|---|
||**H = 250 A/m;**<br>**f = 25 kHz;**<br>**T = 100**°**C**|**f = 100 kHz;**<br>**= 100 mT;**<br>**T = 100** °**C**<br>**B**ˆ|**f = 100 kHz;**<br>**= 200 mT;**<br>**T = 100**°**C**<br>**B**ˆ|**f = 400 kHz;**<br>**= 50 mT;**<br>**T = 100** °**C**<br>**B**ˆ|**f = 500 kHz;**<br>**= 50 mT;**<br>**T = 100**°**C**<br>**B**ˆ|
|3C90|≥320|≤0.019|−|−|−|
|3C94|≥320|≤0.015|≤0.09|−|−|
|3C96|≥340|≤0.01|≤0.07|≤0.03|≤0.06|
|3F35|≥300|−|−|≤0.015|≤0.03|
|3F3|≥315|≤0.020|−|≤0.035|−|
|3F4|≥250|−|−|−|−|



## **Properties of core sets under power conditions (continued)** 

|**GRADE**|**B (mT) at**|**CORE LOSS (W) at**|**CORE LOSS (W) at**|**CORE LOSS (W) at**|**CORE LOSS (W) at**|
|---|---|---|---|---|---|
||**H = 250 A/m;**<br>**f = 25 kHz;**<br>**T = 100**°**C**|**f = 500 kHz;**<br>**= 100 mT;**<br>**T = 100**°**C**<br>**B**ˆ|**f = 1 MHz;**<br>**= 30 mT;**<br>**T = 100** °**C**<br>**B**ˆ|**f = 1 MHz;**<br>**= 50 mT;**<br>**T = 100**°**C**<br>**B**ˆ|**f = 3 MHz;**<br>**= 10 mT;**<br>**T = 100**°**C**<br>**B**ˆ|
|3C90|≥320|−|−|−|−|
|3C94|≥320|−|−|−|−|
|3C96|≥320|−|−|−|−|
|3F35|≥300|≤0.2|−|−|−|
|3F3|≥315|−|−|−|−|
|3F4|≥250|−|≤0.05|−|≤0.08|
|3F45|≥250|−|≤0.034|≤0.086|≤0.06|



2004 Sep 01 

3 

Ferroxcube 

## EFD cores and accessories 

## EFD10/5/3 

## **COIL FORMERS** 

## **General data** 

|**General data**||
|---|---|
|**PARAMETER**|**SPECIFICATION**|
|Coil former material|liquid crystal polymer (LCP), glass reinforced, flame retardant in accordance with<br>_“UL 94V-0”_; UL file number E83005(M)|
|Solder pad material|copper-tin alloy (CuSn), tin-lead alloy (SnPb) plated, transition to lead-free (Sn)<br>ongoing.|
|Maximum operatingtemperature|155 °C,_“IEC 60085”,_class F|
|Resistance to solderingheat|_“IEC 60068-2-20”_, Part 2, Test Tb, method 1B: 350°C, 3.5 s|
|Solderability|_“IEC 60068-2-20”_, Part 2, Test Ta, method 1: 235°C, 2 s|



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1.8<br>handbook, full pagewidth<br>0<br>7.3 0.15<br>0<br>5.7 [0] 7.1 2.8<br>0.1 0.15<br>4.8 [0.1] (6.05 min)<br>1.6 [0.1] 0<br>0<br>2.5 [0] 5.4 0.3<br>0.1<br>max 11<br>0.8 3 0.3 1.8 2<br>9 12<br>11.7  max 14.7 max<br>MGC339<br>3<br>Dimensions in mm.<br>Fig.2  EFD10/5/3 coil former (SMD); 8-solder pads.<br>**----- End of picture text -----**<br>


## **Winding data for EFD10/5/3 coil former (SMD) with 8-solder pads** 

|**NUMBER OF**<br>**SECTIONS**|<br>**NUMBER OF**<br>**SOLDER PADS**|**MINIMUM**<br>**WINDING**<br>**AREA**<br>**(mm2)**|**MINIMUM**<br>**WINDING**<br>**WIDTH**<br>**(mm)**|**AVERAGE**<br>**LENGTH OF**<br>**TURN**<br>**(mm)**|**TYPE NUMBER**|
|---|---|---|---|---|---|
|1|8|4.2|6.05|14.8|CPHS-EFD10-1S-8P|



2004 Sep 01 

4 

Ferroxcube 

## EFD cores and accessories 

## EFD10/5/3 

## **MOUNTING PARTS** 

## **General data** 

|**General data**||||
|---|---|---|---|
|**ITEM**|**REMARKS**|**FIGURE**|**TYPE NUMBER**|
|Clamp|stainless steel(CrNi); clampingforce≈15 N|3|CLM-EFD10|



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handbook, halfpage 12 [0]<br> −0.3<br>9.4 10.5 ± 0.2<br>8 8<br>2.5<br>10 [0] 4<br> −0.3<br>MBW128<br>Dimensions in mm.<br>Fig.3  EFD10/5/3 mounting clamp.<br>**----- End of picture text -----**<br>


2004 Sep 01 

5 

Ferroxcube 

EFD cores and accessories 

## EFD10/5/3 

## **DATA SHEET STATUS DEFINITIONS** 

|**DATA SHEET**<br>**STATUS**|**PRODUCT**<br>**STATUS**|**DEFINITIONS**|
|---|---|---|
|Preliminary<br>specification|Development|This data sheet contains preliminary data. Ferroxcube reserves the right to<br>make changes at any time without notice in order to improve design and<br>supplythe bestpossibleproduct.|
|Product specification|Production|This data sheet contains final specifications. Ferroxcube reserves the right<br>to make changes at any time without notice in order to improve design and<br>supplythe bestpossibleproduct.|



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



2004 Sep 01 

6 

# (g FERROXCUBE 

# Description by Part Number List 

## FERROXCUBE PART NUMBERS 

## 12NC BREAKDOWN 

43 12 020 5593 0 Magnetic Factory Pairs Drawing no. Issue no. for 3" party code Halves (changes with packaging Accessories at factory) 

## FACTORY CODES 

## SET CODES 

35 = Saugerties 018 = single 12 = Ferpol (mostly) 020 = single 22 = Eindhoven 021 = accessory 27 = Ferpol 022 = pair 30 = Hispafer 025 = pair 030 = single 

## CLEAR TEXT CODING 

E 32/16/9-3E25 Core Shape Size Material 

1) Shape 

2) Size — width, length, thickness 

3) Material 3 E 25 3 = MnZn (Manganese Zinc) C = Power Just a number 

4 =NiZn (Nickel Zinc) 

F = High frequency 

H = Telecom 

S = Suppression 

E = High permeability with a 3 prefix 

A = High permeability with a 4 prefix 

Pcl_fpl\dept\Ferrite\csg\12nc 

## Ferroxcube Accessories 

Issue A, Issue date 27/07/00. These tables are for reference only: Part Numbers should be checked using the Lotus Notes Databases or the most recent Data Handbook. 

CLM: Clamp CLI: Clip COV: Cover CON: Container CLA: Clasp SPR: Spring TGP: Tag Plate 

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Coil Former<br>**----- End of picture text -----**<br>


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(Bobbins)<br>**----- End of picture text -----**<br>


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Number of sections<br>Mounting Type:<br>S — Surface Mount<br>Plastic Material<br>Type: D — — Dual<br>P — Thermoplastic F -<br>S — Thermoset Associated Core Type L-<br>Mounting Orientation<br>V — Vertical<br>**----- End of picture text -----**<br>


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Number & Type of pins:<br>D — — Dual termination<br>F - Flat<br>L- Long<br>**----- End of picture text -----**<br>


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H - Horizontal<br>**----- End of picture text -----**<br>

Updated at February 9, 2023

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