磁珠的正确使用及选择
磁珠的应用
磁珠是一种常用的EMC对策器件,属于电感器的一种。磁珠用于滤波,所以单位并非用亨特,而是用阻抗的单位欧姆来表示,且随频率变化。磁珠有着广泛的使用,常用于数字电路中,因为数字电路中的脉冲信号含有高次的谐波,也是EMI的噪声源头。另外在信号电路,以及高频电路的供电电源部分也会加入磁珠做为对策器件。
我们可以从规格书看到|Z|、R、|X|与频率变化的曲线图:
其中|Z|是总体阻抗的绝对值,R是损耗阻抗,|X|是电抗部分绝对值,自谐振点前是感抗|XL|,之后是容抗|XC|。
如何正确选择磁珠
●曲线区域的选择
在低频段,R=|XL|之前是以感抗为主,电感量比较大,在此频率段的电磁干扰会被反射而抑制。但在此频率段也容易与其他器件的寄生参数产生谐振,从而出现干扰被增强的现象。
在R=|XL|和R=|XC|之间的区域,是以消耗阻抗为主,在此频率段的电磁干扰大部分会被吸收,并转化为热能的形式损耗。因此要处理对应干扰频率应处于损耗区域才会有理想的效果。
●尺寸的选择
因为损耗部分是和磁珠的尺寸有关的参数,而且体积越大,损耗越高,抑制效果越好,所以抑制不够的时候可以考虑使用大一号尺寸的磁珠。
●电流的选择
厂家会在规格书里标注额定电流,但是该电流值是温升电流值,并非真正的工作的电流值,通常随着电流的增加,磁导率下降从而影响感值下降,进而影响阻抗曲线的变化。规格书里的阻抗曲线一般是用0A的测试条件,如果用于电源线,一定要注意阻抗值尽量选择较大磁珠。
KOHERelec磁珠系列产品型号齐全,产能充足,列表如下:
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本文由Vicky转载自科或电子KOHERelec公众号,原文标题为:关于磁珠的正确使用,本站所有转载文章系出于传递更多信息之目的,且明确注明来源,不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
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A Fabless IC Design Company for Analog & Mixed Signal Circuits
型号- TWSS,TWSR,TMBTA94,TMBZ5229B,AM6354A,F0805L010,KOL7050,TMBTA92,TESD6A6V8W6,TSODJ28CA-SH,TMBR340F,TESD5L3.3C,AM4102,TMBZ5228B,TWSF,TMBT6520,TRB751V-40,F0805L020,TM3Z9V1,TSODJ12CA-SH,TESD5L3.3,TWSI,TSOD4005-SH,F1210L200SL,TMSZ5238B,TMBT6517,F1206L400SL,TDTC114YE,TMSZ5239B,TMBTA55L,F0805L260SLTH,TMBR120F,TM5Z22V,KSS7050,TMBT4403W,AM7246A,F0805L050-9,TMSZ5237B,T2SD1781KR,F0603L,TMBTA56L,TESD9D3.3C,SM220B-3200B,F2920L200,KF868.35,TESD5Z5.0C,F1210L005,TBC807-40L,KOG3225,AM6310,KVL7050,TBZX84C7V5,F0805L050,TUDZS20B,TM5Z24V,MBTXXX,TBC807-40W,TMBT4401L,KRT7050,RB520G-30,TMBT4401W,2SAXXXM3,F1812L020-60,KF8042,TMBT4403L,TMBTA42,MBTHXXX,TSODJ7.5CA-SH,AP8370,TBZT52C2V4,TBZT52C2V7,KTC7050,TBC848CPDW,AP8368,F1210L020,AP8366,TBC847BDW,KF8037,A4810,RB520CS-30,A4812,A4813,AM8958,F2920L300-15,F0805L035,T2SC1623SW,A4808,A4809,KF8021,TBAT54TW,KF8022,WSA,KF8023,A4804,F1210L010,KF8024,A4805,WSC,A4806,TSODJ5.0A-SH,TDTC114TE,KF8028,WSF,WSI,TBZX84B4V7,WSM,WSS,WSR,F2920L300-24,MDL301,KSM1610,F2920L250,KF8010,TSODJ45A-SH,TSODJ30CA-SH,MBTXXXM,KF8011,MBTXXXL,KF8012,ESD5V0S1,KF8013,AO324A,TBA277,AM2309,MBTXXXW,KF8017,AM2308,AM2307,AM2306,MBTXXXT,AM2305,AM2304,AM2303,AM2302,TBZT52B3V3,TBC847BL,AM2301,KR915,AM2300,TBZT52B3V0,TBZT52B3V6,TMBZ5221B,TBC847BT,TDTC115EE,FM401-407,TBZT52B3V9,TSTZ5.6N,TBC847BW,F1210L035,TBAS21C,F2920L260,KF8002,KF8007,TBAT54L,KF8008,KF8009,TBAS21H,TESD8H5.0C,AM4501,TBAT54H,TBC847CL,A24C256,TBAT54W,TRB501V-40,TBC847CW,MBD2836,F1206L600SL,AM4953,AM0830H,MBD2838,TBAS20H,TBSS84DW,F0805L075,F1210L400SL,F1210L050,AM2319,AM2318,AM2317,AM2313,AM2312,TBC847AL,AM2311,AM2310,TDTA114EE,KF7139,TBAV70L,F1206L025-24,2SAXXX,TBAV70W,TBC847AW,TBAV70T,TBZX84C3V3,TBZX84C3V0,MBTHXXXL,TBC817-25L,TSODJ36A-SH,TBZX84C3V9,TMBR0520E,BAV99L,TMBR0520F,TBZX84C3V6,TMBZ5225B,AM1013,AM1012,TBC817-25W,A6141,AM2342,KF7128,KF7126,F1210L075,A317,TM3Z18V,TBZT52C6V2,TBZT52C6V8,BAV99W,TUDZS8.2B,F1206L150SL,TSODJ58A-SH,BAT54XW,TMBZ5227B,BAT54XL,MBD7000L,MBTAXXX,TMBZ5226B,2SCXXXM3,A6151,TM3Z16V,A6150,TMBT5551L,A24C2048,AM2N7002DW,TBZX84C39,A7425,A7431,TBZX84C43,TBZX84C47,TM3Z27V,TBZT52B7V5,KF4053,TSODJ26CA-SH,SM320C-5200C,TGSOT12C,QCC4A,TSODJ7.0CA-SH,BZX84CXXX,TMBT3904T,TBAV3004,TBZX84C51,TMBT3904L,TSODJ20A-SH,TSD12,TESD5Z12,TBZX84C18,TESD8LL5.0C,F1206L050-24,TBZX84C16,KVP7050,A6115,TBZX84C22,ESD7DXXX,TBZX84C20,TBZX84C24,A6120,KF4033,F1206L200,KOP7050,TUDZS18B,TBZX84C27,TBZX84C33,A7442,TBZX84C30,TBAT46,TBZX84C36,A6110,F0805L125SL,TMBR1100F,TM3Z24V,TESD9D5.0,BAV3004,TMSZ5240B,A6318A,TMUN5335DW,BC8XXXW,MBD3004X,X8050XL,A6540,2SDXXX,KF4014,T9012P,T9012Q,BC8XXXL,KF4012,T9012R,HFMA2X0,KF4010,TSODJ18A-SH,AO321A,TSOD4001-SH,TMBT5551DW,AM0765AH,TSD05,TBZX84C11,TBZX84C10,T9013P,TBZX84C15,T9013Q,T9013R,TBZX84C13,T9013S,TBZX84C12,TM3Z22V,QCC12,TMUN5313DW,TBC846BL,TM5Z9V1,T9014Q,T9014R,T9014S,TMBZ5231B,TBC846BW,TDTC114EE,TUDZS4.7B,MBD301,TSM530AF,F0603L075SL,AM4920,TM3Z20V,T9015Q,T9015R,T9015S,TMBZ5230B,TESD5Z3.3,RB551V-30,T1SS360T,TMBTA14,TMBTA13,TMUN5113,TMUN5114,KVDH,MBR120XSF,KVDF,TMSZ5244B,TMUN5111,TUDZS12B,TMUN5112,KMA,AM1465H,ZTTCC,KMB,KMF,ZTTCE,AO2722,BAV170,TMSZ5243B,F1210L350SL,KMU,TSODJ7.0A-SH,KMT,KVCM,TM3Z5V1,F0402L035SL,M1MA142WX,TM3Z5V6,TMBR260F,TUDZS11B,A6516,T2SA1774R,T2SA1774Q,TMSZ5242B,TBZX84C8V2,MBTHXXW,ZTTCS,ZTTCR,ZTTCW,ZTTCV,TUDZS4.3B,KOC,TUDZS10B,TMUN5132,TESD8D5.0C,TESD5D5.0C,KOG,TMBR3100F,TMSZ5241B,TESD9D12,TESD8D3.3,KOH,TDAN202U,A6505,KOM,F1206L200SL,KOL,AP8275,A6501,TDAN202K,A6500,KOP,ESD9DXXX,HFM101-108,TMUN5141,TDTC123JE,TEFMAF103,TEFMAF102,TEFMAF101,A4757,TMBT3906W,TMSZ5248B,TEFMAF104,A7330A,ESDXXXM,DTDXXX,TDTA144EE,TUDZS16B,TMBR130E,TMBR130F,QCC8C,TMSZ5247B,TBZX84B9V1,T2SB1197KR,T2SB1197KQ,TM3Z62V,F0805L075SL,F0805L100,TUDZS15B,TBAW56L,TMBT3904W,A4778,TMSZ5246B,A7805,A7801,A4776,A4781,A4782,TM5Z5V6,A4783,ESDAXXXL,TBAW56W,TBZX84C68,TM5Z5V1,F1812L300,TBZX84C62,KSG,BAV199,AM6260,KSM,A7115B,KSS,TMSZ5245B,A4771,TBZX84C75,A4772,TMBT3906T,KTD,TESD5Z7.0,KTC,KMC7015,TUDZS13B,TMBT3906L,KF9064,F1812L,KF9066,KF9067,MB10S,KF9068,KTM,KF9069,A7431A,KVLM,KOC5032,TMBT5401DW,TBC847CDW,KF9061,KF9062,KF9053,KF9055,TMBR330F,KF9057,ESDAXXXW5,A8079,ESDAXXXW6,KVC,TRB550V-30,TBC846BPDW,KF9050,TM5Z33V,KVL,MMSD4148,KF9043,TBZX84C4V3,KF9044,TBAS16L,KVP,TFMAF401,TBAS16H,TFMAF402,KF9049,TFMAF403,TSODJ40A-SH,TFMAF404,TFMAF405,TFMAF406,TFMAF407,T2SC4081S,TBZX84C4V7,T2SC4081Q,T2SC4081R,2SCXXXL,TBAS16W,8X50XX,RB520S-30,TDTB123Y,KF9031,KF9032,2SCXXXW,KF9036,A25Q32,SMCJXXXA,KR303.825,TESD6V8,TCMH,TCMS,A24C512,TMBTA44L,RB520S-40,TCMW,KF9030,F0603L100SL,F0603L016,KF9022,TPIQ,KOG2016,KF9024,AP8024,KF9025,TPIO,KF9026,KF9027,TBAS16BS,TMBT2222AL,KF9028,KF9029,AP8022,F0603L010,KVPM,KF0203,TBZT52B36,F0603L012,AM3406A,TMBT2222AT,TPIU,TM5Z2V7,TESD7D5.0,T1SS356,T1SS355,TM5Z2V4,TESD8LL5.0,TSODJ8.0A-SH,H8X50X,TBZX84B5V1,AP8012,KF9013,TBC848BDW,F1210L110,KF9016,AM4264,F0603L020,TBZX84B5V6,AM0465H,A1117A,F0603L025,TPIB,TPIA,F1812L300SL,A25D80,F2920L100,F1812L160-16,AP8001,AP8002,F1812L160-12,KF9003,TBC850CL,KF9006,TBZT52B18,KF9008,TBZT52B15,TBZT52B16,TBSS5240L,UMA1XX,TBZT52B2V4,TBZT52B22,
科或电子将携信号线及功率线磁珠、一体成型电感等产品亮相2024第二届汽车照明产业技术论坛
科或电子诚邀您莅临2024年8月22日至23日在常州举办的第二届汽车照明产业技术论坛暨车灯产业价值链展。活动期间,科或电子将全面展示核心产品,包括信号线及功率线磁珠、一体成型电感、磁胶电感和共模电感等,同步提供汽车照明应用技术解决方案。作为汽车照明行业的领先企业,科或电子将在N5展位恭候您的光临。
ELECTRONIC COMPONENTS TECHNOLOGY WORLD "FEEL" THE FUTURE
型号- MDHA SERIES,MDHA5020,FBA,FBA SERIES,BCMA,MDA,MDCA4020,MDCA5030,MDA1040,MDCA,MDCA3012,MDA1360,MDCA1350,MDCA3015,MDA0754HT-101M,FBHA,MDAHT1365,BCMA SERIES,MDAHT1040,MDA1365,MDAHT5030,ACMA,ACMA4532,MDHA7030,FBA0805,FBA0603,MDA1350,MDA5030,FBA0402,NRSA,FBHA0805,MDA1870,MDAHT7054,MDAHT SERIES,MDHA8030,MDA7050,MDAHT,FBHA0603,FBHA0402,MDHA7060,MDCA7030,FBA1206,ACMV,FBHA1806,MDA2313,MDHA4020,MDHA5030,ACMA3225,MDA7054HT-680M,FBHA1206,MDCA SERIES,MDA1050,MDCA1040,MDA SERIES,FBHA SERIES,MDHA,MDA7030,MDAHT1054,ACMA SERIES,MDAHT7030
FBA Series Chip Ferrite Bead SMD Type Size 0603
型号- FBA0603-121-301R,FBA,FBA0603-301-501R,FBA0603-221-251R,FBA SERIES,FBA0603-221-551R,FBA0603-601-351R,FBA0603-121-601R,FBA0603-300-701R,FBA0603-600-701R,FBA0603-300-601R,FBA0603-470-501R,FBA0603-101-301R,FBA0603-202-201R,FBA0603-151-601R,FBA0603-102-201R,FBA0603-471-351R,FBA0603-152-201R,FBA0603-252-201R,FBA0603-220-501R
FBHA Series Chip Ferrite Bead High Current Type Size 0603
型号- FBHA0603-121-302R,FBHA0603-121-202R,FBHA0603-221-202R,FBHA0603-601-102R,FBHA0603-260-602R,FBHA0603-471-102R,FBHA0603-300-602R,FBHA0603,FBHA0603-300-302R,FBHA0603-800-302R,FBHA SERIES,FBHA,FBHA0603-151-202R,FBHA0603-102-102R,FBHA0603-301-102R,FBHA0603-101-302R,FBHA0603-331-152R
FBHE Series SMD Suppression Ferrite Bead Size 1206
型号- FBHE1206-151-202R,FBHE1206-600-502R,FBHE SERIES,FBHE1206-301-102R,FBHE1206-301-302R,FBHE1206-121-202R,FBHE1206-471-102R,FBHE1206-501-302R,FBHE1206-601-302R,FBHE1206-601-202R,FBHE,FBHE1206-300-302R,FBHE1206-800-302R
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