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DFK DFK - Magnetically compensated choke  1- and 3-phase en IM0005192

Series: DFK

Free Sample Request

Magnetically Compensated Choke, 1- and 3-phase

11 Variants

Description DFK


  • Current compensated choke
  • 1- or 3-phase choke
  • THT terminals or wire leads
  • Flange for mounting onto printed circuit board
  • Fully potted resign


  • Attenuation of common mode interferences
  • May also be used in direct current applications where magnetic compensation is required
  • Designed for 230/400 VAC applications
Date Podkategoria Język Title Download
White Paper Angielski (English) White Paper SPICE library

Rated voltage

Rated voltage

Corresponds to the electrical voltage during normal operation.The nominal voltage is specified as the rated voltage and referenced in most cases to an IEC standard, which is referenced as a test basis for the operating parameters.

The nominal voltage is called depending on the operating condition, with AC voltage it is indicated VAC, and in the case of DC voltage as VDC.

up to 440 VAC

Rated Current

Rated Current

The electrical characteristics describe the approved operating values for the state of rated current and rated voltage considering the mentioned conditions.

General information on electrical characteristics colors of fuses
Ratings IEC, UL/CSA

General information on the rated current and the rated voltage at EMC products
Rated Voltage
Rated current

The values are different depending on the approval body and therefore are referenced in the corresponding admission cards for the respective product families. Details about the approvals and ratings are listed in the data sheets.

Search approval information for different families


0.5 - 15 A @ Ta 40 °C

Rated inductance

1 - 20 mH, Tol. -30% +50%

Power Operating Frequency

50 - 400 Hz

Terminal Type

THT, Flexible wire


6 - 163 g

Material: Housing

UL 94V-0 

Sealing Compound

UL 94V-0 

Test Voltage

1.8 kV, 50 Hz, 1 min, winding to winding

Isolation Voltage

2 kV eff., winding to ambient

Climatic Category

Climatic Category

Disposition of components in categories for the assessment of mechanical and electrical properties.
Climatic Category

25/100/21 acc. to IEC 60068-1

Allowable Operation Temp.

-25 °C to 100 °C

Detailed information on product approvals, code requirements, usage instructions and detailed test conditions can be looked up in  Details about Approvals

SCHURTER products are designed for use in industrial environments. They have approvals from independent testing bodies according to national and international standards. Products with specific characteristics and requirements such as required in the automotive sector according to IATF 16949, medical technology according to ISO 13485 or in the aerospace industry can be offered exclusively with customer-specific, individual agreements by SCHURTER.


The approval mark is used by the testing authorities to certify compliance with the safety requirements placed on electronic products.

Approval Reference Type: DFK

Approval Logo Certificates Certification Body Description
Approval marks cURus UL UL File Number:

Application standards

Application standards where the product can be used

Organization Design Standard Description
Partners IEC_Certification_Body Designed for applications acc. IEC/UL 60950 IEC 60950-1 includes the basic requirements for the safety of information technology equipment.


The product complies with following Guide Lines

Identification Details Initiator Description
Approval marks CE Selbsteklaration SCHURTER AG The CE marking declares that the product complies with the applicable requirements laid down in the harmonisation of Community legislation on its affixing in accordance with EU Regulation 765/2008.
Environment_Safety RoHS_Logo_color_CMYK_tif SCHURTER AG Directive RoHS 2011/65/EU, Amendment (EU) 2015/836
Environment_Safety China_RoHS_e_konform_eps SCHURTER AG The law SJ / T 11363-2006 (China RoHS) has been in force since 1 March 2007. It is similar to the EU directive RoHS.
Environment_Safety REACH SCHURTER AG On 1 June 2007, Regulation (EC) No 1907/2006 on the Registration, Evaluation, Authorization and Restriction of Chemicals 1 (abbreviated as "REACH") entered into force.




Type Corresponds to a product series and includes various distinct variants. On the type of descriptive data are summarized, eg in the data sheet

Numer porządkowy

Numer porządkowy Unique part number for placing an order

Klucz konfiguracji

Klucz konfiguracji The configuration key of a product consists of the composite key values, which describe the different kinds of attribut distinction.


Comment Rysunki CAD służą wyłącznie do modelowania.

Model Description

Model Description









The position of the cables of the model is for illustrative purposes only

Dimension [mm]

Case 03

Case 07

Case 11

Case 12

Case 20

Case 25-2

Case 29-4


1 phase

3 phases and neutral

Impedance curves

Short Table of Variants DFK Open complete table DFK

In [A] Ln [mH] Rcu [mΩ] Order Number

Variant Details

The link on the respective order number refers to a separat tab with specific detailed information .

This assures better readable information of the selected product.
Change to the tab All Products in order to show details of another variant.

This approach offers to use generic alias link to the product details:

www.schurter.xx/art/ [Order Number]

where the following variables are used:
- xx is the country specific domain
- [Order Number]

A=Most Popular

A=Most Popular

Most popular products have the following customer benefits:

- previously ordered by multiple customers
- generally in stock for immediate delivery
- early adoption or mature life cycle

Contact us for availability on other product variants, lead-times vary:

Availability for all products can be searched real-time. Enter part number and required quantity:
Stock Check SCHURTER

Free Sample

Free Sample

Please ask for free sample in order to check if the products meets your requirement for your application. Send your delivery adress and your specific requirements.

Distributor Stock Check

Distributor Stock Check

The following links reffers to the inquiry form for distributors stock information of the selected products. It allows checking for the available amount and optionally to place an order at your selected partner.

Distributor Stock Check
Stock Check Distributor

0.5 10 900 DFK-175-0001 ...
1 10 500 DFK-20-0001 ...
1 20 500 DFK-20-0002 ...
1 10 510 DFK-25-0001 ...
2 10 250 DFK-25-0002 ...
2 20 250 DFK-33-0001 ...
3 10 150 DFK-33-0002 ...
6 4 27 DFK-40-0003 ...
10 2 9 DFK-40-0004 ...
15 1 10 DFK-40-0005 ...
6 4 x 1.5 20 DFK-48-0008 ...

prod //cdn.schurter.com