DFKF Suppression Chokes www.schurter.com/pg81_82 Magnetically Compensated Choke, 1-phase, flat design Description Applications Standards References - Current compensated choke 1‑phase choke THT-terminals Inductor horizontally positioned in housing SMD version on request - - EN 60938 Attenuation of common mode interferences Designed for 230/400 VAC applications Chopper amplifiers DC drives and stepper motor controls Switching power supplies General Product Information Weblinks Approvals, RoHS, CHINA-RoHS, e-Store, Distributor-Stock-Check Technical Data Rated voltage Rated Current Rated inductance Power Operating Frequency Terminal technic Weight Material: Housing Sealing Compound up to 440 VAC 0.4 - 4 A @ Ta 40 °C 0.6 - 40 mH, Tol. -30% +50% 50 - 400 Hz THT 5 - 16 g UL 94V-0 UL 94V-0 Test Voltage Isolation Voltage Climatic Category Allowable Operation Temp. Dimensions Case 04-2 1.8 kV, 50 Hz, 1 min, winding to winding 2 kV eff., winding to ambient 25/100/21 acc. to IEC 60068-1 -25 °C to 100 °C Case 15-2 4 1 10 ±0.2 EMC Products 28.3 max. 25 ±0.2 18.2 max. 2 0.6 x 0.88 0 3.5 -0.5 3 4 15 ±0.2 0.6 x 0.88 3 27.4 max. 16.5 ±0.2 2.0 17.8 max. 12.4 ±0.2 2.2 0 3.5 -0.5 2 15 ±0.2 1 DFKF Suppression Chokes www.schurter.com/pg81_82 Diagrams RFI suppression of switching power supply Noise suppression filter 1) 1) 2) 2) 3) 3) 1) Power line 2) Switching Power Supply 3) Interference current 1) Power line 2) Equipment 3) Interference current Variants In [A] Ln [mH] Rcu [mΩ] Tripped Power Dissipation [W] fRES [MHz] Weight [g] Housing Packing unit [pcs.] Order Number 0.4 40 1200 0.4 0.11 5 04-2 45 DFKF-18-0001 0.6 15 540 - - 5 04-2 45 DFKF-18-0002 1.2 6.8 200 0.6 0.45 5 04-2 45 DFKF-18-0003 1.5 3.3 110 0.5 1.2 5 04-2 45 DFKF-18-0004 2 2 60 - - 5 04-2 45 DFKF-18-0005 4 0.7 16 0.5 2.5 5 04-2 45 DFKF-18-0006 0.6 40 1000 0.7 0.2 16 15-2 40 DFKF-28-0001 1 20 360 0.7 0.28 16 15-2 40 DFKF-28-0002 1.4 27 310 - - 16 15-2 40 DFKF-28-0003 2 6 100 0.8 0.3 16 15-2 40 DFKF-28-0004 4 0.6 13 1 2.5 16 15-2 40 DFKF-28-0006 4 1.5 28 0.9 1.3 16 15-2 40 DFKF-28-0005 The specifications, descriptions and illustrations indicated in this document are based on EMC Products current information. All content is subject to modifications and amendments.