AC Line Filters Common Mode SCR Coils, 38 Series Overview Applications The KEMET SCR coils are common mode chokes with Industrial equipment a wide variety of characteristics. These toroidal coils Home appliances are designed with our proprietary high permeability Power supplies ferrite S15H cores and are useful in various noise c o un te r measur e fi e ld s. Benefits Proprietary S15H ferrite material High permeability High impedance Space saving due to high permeability material O p e r a ti n g te m p e r a t u r e r a n g e fr o m 25 C to +12 0C U L 9 4 V0 fla m e r e t a r da n t r a te d bas e a n d c a p Part Number System SCR 38- 150- 1R7 A 050 JH Dimension Code Rated Current Wire Diameter Inductance (mH) Internal Control Series Windings Terminal Base Type (See Dimensions) (A) (mm) Minimum Code SCR 38 xxx = xx.x A R = Decimal point A = Single xxx = xx.xmH J = Vertical type Blank 38B B = Double JH = Horizontal type BK Examples: Examples: Examples: 150 = 15.0 A 1R7 = 1.7 mm 050 = 5.0 mH Note: With exceptions, see Table 1 for details. One world. One KEMET KEMET Electronics Corporation KEMET Tower One East Broward Boulevard LF0003 SCR38 10/14/2019 1 Fort Lauderdale, FL 33301 USA 954-766-2800 www.kemet.comAC Line Filters Common Mode SCR Coils, 38 Series Magnetic Permeability of Ferrite Material I n o r d e r to a c hieve m os t e ffi c ie n t n oise r e d u c ti o n , i t is i m p o r t a n t to se l e c t th e ma te r ial a c c o r di n g to th e t a r g e t f r e q u e n c y band. Depending on its magnetic permeability, a particular ferrite material will be effective in a certain frequency band. A schematic representation of the relationship between the magnetic permeability of each material and the corresponding effective band range is shown in Figure 1. Materials with higher magnetic permeability are effective in the lower frequency range, while those with lower magnetic permeability are effective in the higher frequency range. Thus, Mn-Zn products are mainly used for reducing conduction noise, while Ni-Zn products are commonly used for radiation noise countermeasures. The effective frequency range varies depending on core shape, size and number of windings. This frequency dependence of th e ma g n e ti c p e r m ea b ili t y as s h ow n i n th e fi g u r e s e r ves fo r r e fe r e n c e p u r p os es o nl y a n d i t s h o u l d b e tes te d o n th e a c t ual device to determine its effectiveness. S18H, S15H, 10H, 7H, 5H, 1400L and 700L are KEMETs proprietary ferrite material names. Other materials can also be available on request. Figure 1 - Relationship between the magnetic permeability of each material and its effective frequency range 20,000 Higher magnetic permeability: Higher noise suppression effect Mn-Zn Series in the lower frequency range S18H S15H 10H 10,000 Lower magnetic permeability: Higher noise suppression effect 7H in the higher frequency range 5H Ni-Zn Series 1400L 700L 0 10 kHz 100 kHz 1 MHz 10 MHz 100 MHz 1 GHz Effective Frequency Range KEMET Electronics Corporation KEMET Tower One East Broward Boulevard LF0003 SCR38 10/14/2019 2 Fort Lauderdale, FL 33301 USA 954-766-2800 www.kemet.com Magnetic Permeability