AC Line Filters Common Mode SS Coils, 21V Series Overview Applications The KEMET SS coils are common mode chokes with a Audio-visual equipment w i d e va r ie t y of c ha r a c te r is tic s. T h es e g ea r t y p e c oils a r e O ffi c e au to ma ti o n e q u i p m e n t d esi g n e d w i th o u r p r o p r ie t a r y fe r r i te c o r es a n d a r e us e f u l i n D i g i t al a p p lia n c es va r i o us n ois e c o u n te r m easu r e fi e l ds. Power supplies Benefits Proprietary 5H and 10H ferrite materials and equivalents S u i t a b l e fo r 15 0 k Hz r a n g e W i d e va r ie t y of sizes a n d s p e c i fi c a ti o ns 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 b o b b i n Part Number System SS 21 V- R 03 1380 Series C o r e S i z e C o d e Core Orientation Core Type Rated Current (A) Inductance (mH) Minimum SS 21 V = Vertical Blank = Standard 0x = 0.x A xxx0 = xxx mH R = H i g h p e r m e a b i l i t y xx = x.x A 0xxx = xx mH 00xx = x.x mH Examples: 000x = 0.x mH 03 = 0.3 A 13 = 1.3 A Examples: 1380 = 138 mH 0179 = 17.9 mH 0026 = 2.6 mH 0008 = 0.8 mH One world. One KEMET KEMET Electronics Corporation KEMET Tower One East Broward Boulevard LF0028 SS21V 1/31/2020 1 Fort Lauderdale, FL 33301 USA 954-766-2800 www.kemet.comAC Line Filters Common Mode SS Coils, 21V 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 ba n d. D e p e n di n g o n i t s ma g n e ti c p e r m ea b ili t y, a pa r ti c u la r fe r r i te ma te r ial w ill b e e f fe c ti ve i n a c e r t ai n fr e q u e n c y ba n d. A s c h e ma ti c r e p r es e n t a ti o n of th e r e la ti o ns hi p b e t we e n th e ma g n e ti c p e r m ea b ili t y of ea c h ma te r ial a n d th e c o r r es p o n di n g e f fe c ti ve ba n d r a n g e is s h ow n i n F i g u r e 1. Ma te r ials w i th hi g h e r ma g n e ti c p e r m ea b ili t y a r e e f fe c ti ve i n th e l owe r f r e q u e n c y r a n g e , w hil e th ose w i th l owe r ma g n e tic p e r m ea b ili t y a r e e f fe c ti ve i n th e hi g h e r f r e q u e n c y r a n g e . T h us , M n -Z n p r o d u c t s a r e mai nl y use d fo r r e d u c i n g c o n d u c ti o n n ois e , w hil e N i -Z n p r o d u c t s a r e c o m m o nl y use d fo r r a dia ti o n n oise c o u n te r m easu r es. T h e e f fe c ti ve f r e q u e n c y r a n g e va r ies d e p e n di n g o n c o r e s ha p e , size a n d n u m b e r of w i n di n gs. T his fr e q u e n c y d e p e n d e n c e 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 LF0028 SS21V 1/31/2020 2 Fort Lauderdale, FL 33301 USA 954-766-2800 www.kemet.com Magnetic Permeability