Ferrite EMI Cable Cores
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- Byron Preston
- 6 years ago
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1 Ferrite EMI able ores TLOGUE
2 OUT LIRD TEHNOLOGIES Laird Technologies designs and manufactures customized, performance-critical products for wireless and other advanced electronics applications. The company is a global market leader in the design and supply of electromagnetic interference (EMI) shielding, thermal management products, mechanical actuation systems, signal integrity components, and wireless antennae solutions, as well as radio frequency (RF) modules and systems. Laird Technologies is the world leader in the design and manufacture of customized, performance-critical products for wireless and other advanced electronics applications. Laird Technologies partners with its customers to customize product solutions for applications in many industries including: Network Equipment Handsets Telecommunications Data Transfer & Information Technology omputers utomotive Electronics erospace Defense Medical Equipment onsumer Electronics Industrial Laird Technologies offers its customers unique product solutions, dedication to research and development, as well as a seamless network of manufacturing and customer support facilities across the globe.
3 TLE OF ONTENTS Ferrite Material Impedance omparison... 4 Design & Selection Rules of Thumb... 4 High Frequency (HF-) ylindrical ores... 5 High Frequency (HF-) Split, Snap-On ores... 6 roadband (28-) ylindrical ores... 7 roadband (28-) Split, Snap-On ores Low Frequency (LF-) ylindrical ores roadband (28R) Ribbon & Flex able ores roadband (28S) Split Ribbon & Flex able ores Ferrite EMI Disks & Plates Sample Kit Lists ll parts listed in this catalog are lead free and RoHS compliant. This catalog contains a limited selection of Laird Technologies cable core products. Refer to for other cable core products not included in this cable core catalog. NOTIE Laird Technologies' products or subcomponents are not specifically designed or tested by Laird Technologies for use in any medical applications, surgical applications, medical device manufacturing, or any similar procedure or process requiring approval, testing, or certification by the United States food and drug administration or other similar Governmental entity. pplications with unusual environmental requirements such as military, medical, life-support or Life-sustaining equipment are specifically not recommended without additional testing for such application. 3
4 FERRITE MTERIL OMPRISON LF, 28 & HF MTERIL IMPEDNE VS FREQUENY (300 KHz - 2 GHz) Impedance Materials for able & Wiring Harness ores HF Impedance (Z) in Ohms (Ω) LF Low Frequency 28 roadband High Performance HF High Frequency LF Frequency () DESIGN & SELETION RULES OF THUM SELET THE PPROPRITE FERRITE MTERIL For the EMI frequency range to be attenuated, refer to cable core material impedance vs.frequency chart above. FERRITE MTERIL OMPOSITION FFETS ORE PERFORMNE MOST High-performance material is best. heap, low-performance materials require the use of larger, heavier cores. SHPE (DESIGN) ND MSS OF THE FERRITE ORE SIGNIFINTLY FFET IMPEDNE DON T OVER SIZE Use high-performance ferrite material and select the smallest core that will do the job. High-performance material allows the use of smaller, lighter and lower cost cores. SELET FERRITE ORE THT FITS OVER THE LE S OUTSIDE DIMENSIONS ore should slide easily over the cable during installation. WHEN POSSILE, INSTLL LE ORE OVER WIRES IN OMMON MODE ONFIGURTION (Out and back lines inside the same ferrite cable core). differential cable pair inside the same core will make the ferrite core a common mode choke that is not susceptible to saturation from very high currents. INSTLL THE FERRITE ORE NER THE NOISE SOURE DDITIONL TURNS THROUGH ORE WILL PROVIDE MULTIPLE MOUNTS OF PEK IMPEDNE Example: Two wire turns provide four times the impedance of one turn (pass through) the ferrite core. lso, with each added turn, the peak impedance shifts to a slightly lower frequency. TWO-PIEE SPLIT ORES RE VILLE One-piece cylindrical or flat ribbon ferrite core shapes are usually preferable, but split cores can be used in applications where cores cannot slide over cable ends and connectors. Some split cores are available with snap-on plastic cases or metal clips. SIDE-Y-SIDE IMPEDNE TESTING OF FERRITE ORES IS THE EST WY TO OMPRE PERFORMNE OF DIFFERENT ORES Ferrite core impedance measurement equipment and test methods are not standardized in the industry. Every ferrite company has their own test methods. atalog (web site) impedance data cannot be accurately compared. Optimized, high-performance, low-cost custom part designs are available.
5 HIGH FREQUENY FERRITE YLINDRIL EMI ORES 300 MHZ TO 2 GHZ OPTIMIZED ylindrical Solid Ferrite ores for Round ables & Wiring Harnesses ING SYSTEM EXMPLE HF Material Type Product Part Size (mm) Selected Dimension (Usually Length) dditional Part Description dditional Part Description or oating Part Number HF HF HF HF HF HF HF HF HF HF HF HF HF HF HF HF HF HF HF HF DIMENSIONS mm (inches) (0.295) 9.52 (0.375) 9.52 (0.375) (0.485) (0.485) (0.485) (0.562) (0.562) (0.562) (0.590) (0.600) (0.616) (0.625) (0.630) (0.630) (0.669) (0.669) (0.735) (1.020) 3.55 (0.140) 2.40 (0.094) 5.08 (0.200) 5.08 (0.200) 4.88 (0.192) 4.88 (0.192) 4.88 (0.192) 6.99 (0.275) 3.38 (0.133) 6.99 (0.275) 7.87 (0.310) 9.25 (0.364) 9.25 (0.364) 7.01 (0.276) 7.01 (0.276) (0.400) (0.505) (0.984) (0.748) 5.00 (0.197) (1.000) 5.00 (0.197) (0.787) (0.748) (1.102) (0.787) (1.181) Typical Impedance (Z) in Ohms 1 GHz ll impedance values for high frequency cores are NET; NET impedance is impedance of the ferrite core only. ll impedance contribution from the test wire and fixtures has been removed. 5
6 HIGH FREQUENY FERRITE SPLIT / SNP-ON, ORES IN PLSTI SES 300 MHZ TO 2 GHZ OPTIMIZED Split, Snap-on Ferrite ores in Plastic ases For retrofit and post-assembly operations, a selection of high frequency EMI split cores are offered. Similar in performance to one-piece cylindrical core designs, these split ferrite cores provide excellent common and differential mode high frequency EMI suppression on round cable and wire assemblies. lack plastic snap-on cases provide secure closure of the split cores onto the cable or wire bundle. ING SYSTEM EXMPLE HF Material Type Product Part Size (mm) Selected Dimension (Usually Length) dditional Part Description Plastic ase olor ll impedance values for high frequency cores are NET; NET impedance is impedance of the ferrite core only. ll impedance contribution from the test wire and fixtures has been removed. Part Number Fig # HF HF HF HF HF HF HF PLSTI SE DIMENSIONS mm (inches) D (0.511) (0.540) (0.715) (0.827) (0.790) (0.877) (1.142) 3.50 (0.138) 5.44 (0.214) 7.05 (0.278) 6.80 (0.268) 9.07 (0.357) (0.512) (0.992) (1.203) (1.280) (1.642) (1.636) (1.290) (1.280) (0.453) (0.540) (0.744) (0.827) (0.849) (0.860) (1.166) Maximum able Diameter mm (inches) 3.51 (0.138) 4.88 (0.192) 6.60 (0.260) 6.76 (0.266) 9.01 (0.355) (0.400) (0.514) Typical Impedance (Z) in Ohms part number sufix designates black plastic case. dditional colors may be available, please inquire with Laird Technologies customer 1 GHz Laird Technologies Solid ylindrical ore Similar Parts (for reference) HF HF HF HF HF HF HF Figure 1 Figure 2 D Please visit lairdtech.com for the most up to date information. ustom parts are available. 6
7 RODND EMI FERRITE YLINDRIL ORES FOR ROUND LES & WIRING HRNESSES ING SYSTEM EXMPLE Material Type Product Part Size Selected Dimension (Usually Length) dditional Part Description dditional Part Description or oating Part Number DIMENSIONS mm (inches) Typical Impedance (Z) in Ohms (0.138) 1.50 (0.059) 3.25 (0.128) (0.157) 2.00 (0.079) (0.125) (0.625) (0.267) 7.00 (0.276) 7.52 (0.296) 7.80 (0.307) 3.18 (0.125) 3.99 (0.157) 3.80 (0.150) 2.39 (0.94) 3.00 (0.118) (0.560) (0.531) 7.54 (0.297) (0.748) roadband (28) round cable parts are sorted by diameter () on pages 12 & 13 and sorted by impedance on pages 14 & 15. Please refer to the separate Toroid atalog from Laird Technologies for an extensive list of small ferrite inductor toroid core sizes and materials (0.315) 3.17 (0.125) 4.78 (0.188) (0.315) 3.17 (0.125) (0.396) (0.339) 3.80 (0.150) (0.354) 4.75 (0.187) (0.787) (0.375) 5.08 (0.200) (0.410) (0.375) 5.08 (0.200) (0.570) (0.375) 5.08 (0.200) (0.750) (0.375) 5.08 (0.200) 4.83 (0.190) (0.384) 3.80 (0.150) (0.384) 3.80 (0.150) (0.984) (0.390) (0.590) (0.197) 5.00 (0.197) (0.235) 6.17 (0.243) (0.433) 5.10 (0.201) (1.260) (0.461) 7.70 (0.303) (0.590) (0.453) 4.90 (0.193) (0.984)
8 RODND EMI FERRITE YLINDRIL ORES Part Number DIMENSIONS mm (inches) (0.485) (0.512) (0.562) (0.562) (0.562) (0.562) (0.562) (0.562) (0.562) (0.570) (0.590) (0.591) (0.591) (0.616) (0.616) (0.625) (0.625) (0.630) 5.60 (0.220) 3.55 (0.140) 3.55 (0.140) 4.50 (0.177) 4.88 (0.192) 7.92 (0.312) 7.92 (0.312) 5.00 (0.197) 7.26 (0.286) 7.26 (0.286) 7.26 (0.286) 8.51 (0.335) 6.99 (0.275) 5.90 (0.232) 4.50 (0.177) 6.99 (0.275) 6.99 (0.275) 7.87 (0.310) 7.87 (0.310) (0787) (0.984) (0.787) (1.000) (0.551) (0.400) (0.530) (1.115) (0.600) (0.800) (0.217) (1.100) (1.378) (1.575) (0.945) (0.563) (0.630) Typical Impedance (Z) in Ohms (0.630) 9.25 (0.364) (0.630) 9.25 (0.364) (1.102) dditional wire turns multiply impedance 8
9 RODND EMI FERRITE YLINDRIL ORES Part Number DIMENSIONS mm (inches) (0.672) 8.76 (0.345) (1.000) Typical Impedance (Z) in Ohms (0.686) 9.52 (0.375) * H * (0.686) (0.686) (0.735) (0.735) (0.735) (0.773) (0.825) (0.870) (0.870) (0.898) (0.925) (1.000) (1.000) (1.020) (1.122) (1.122) (1.142) (1.142) (1.225) (1.225) (1.225) (1.250) (1.417) (1.530) 9.52 (0.375) 9.53 (0.375) (0.440) (0.400) (0.400) (0.458) (0.520) (0.540) (0.540) (0.543) (0.492) (0.610) (0.505) (0.542) (0.542) (0.748) (0.748) (0.750) (0.750) (0.750) (0.750) (0.905) (0.510) (0.562) 8.80 (0.347) 9.50 (0.374) (0.787) 7.49 (0.295) (0.545) (0.627) 7.92 (0.312) (0.875) *Oval ore Part Number E D DIMENSIONS mm (inches) D (0.515) (1.030) E 5.10 (0.201) (1.025) roadband (28) round cable parts are sorted by diameter () on pages 12 & 13 and sorted by impedance on pages 14 & 15. ustom parts are also available (1.540) (0.660) (0.875) (2.000) (1.000) (1.130) (2.400) (1.400)
10 RODND EMI FERRITE SPLIT / SNP-ON ORES IN PLSTI SES FOR ROUND LES & WIRING HRNESSES For retrofit and post-assembly operations, Laird Technologies offers a selection of split cores. Similar in performance to the onepiece core designs, these split ferrite cores provide excellent common and differential mode EMI suppression on round cable and wire assemblies. lack or white plastic snap-on cases provide secure closure of the split cores onto the cable. ING SYSTEM EXMPLE Material Type Product Part Size Selected Dimension (Usually Length) dditional Part Description *0 (white case) *2 (black case) Plastic ase olor road and High Performance Material is 28 High Frequency Material is HF roadband (28) round cable parts are sorted by diameter () on pages 12 & 13 and sorted by impedance on pages 14 & 15. *00 = White Plastic Snap On ase *02 = lack Plastic Snap On ase Part Number Fig # on page * * * * * PLSTI SE DIMENSIONS mm (inches) D (0.511) (0.511) (0.540) (0.579) (0.738) (0.738) (0.790) (0.977) (0.591) (0.512) (1.142) (0.715) (0.827) (0.877) (0.650) (0.756) (0.776) (0.776) (0.776) (0.925) (0.967) (1.181) (1.134) (2.230) (1.150) 4.90 (0.193) 4.90 (0.193) 5.44 (0.214) 5.44 (0.214) 5.04 (0.198) 6.75 (0.266) 9.07 (0.357) 7.00 (0.276) 5.00 (0.197) (0.512) 7.05 (0.278) 6.80 (0.268) 7.00 (0.276) 8.20 (0.323) 9.00 (0.354) 9.00 (0.354) 9.00 (0.354) (0.514) (0.402) (0.512) (0.535) (0.768) (0.787) (1.004) (1.004) (12.03) (1.694) (2.102) (2.083) (1.636) (2.201) (0.709) (1.004) (1.280) (1.280) (1.642) (1.290) (1.201) (0.783) (1.382) (1.388) (1.382) (1.427) (0.535) (1.327) (0.606) (1.772) (1.654) (0.460) (0.460) (0.540) (0.579) (0.738) (0.738) (0.849) (0.977) (0.866) (0.461) (1.166) (0.744) (0.827) (0.860) (0.600) (0.909) (0.709) (0.719) (0.709) (0.866) (1.122) (1.181) (1.307) (2.230) (1.654) Maximum able Diameter mm (inches) 3.50 (0.138) 3.50 (0.138) 4.75 (0.187) 5.05 (0.199) 4.40 (0.137) 6.50 (0.256) 8.95 (0.352) 7.00 (0.276) 2.50 (0.098) (0.506) 6.45 (0.254) 6.45 (0.254) 9.95 (0.392) 7.00 (0.276) 8.05 (0.317) 8.90 (0.350) 9.00 (0.354) 8.00 (0.315) (0.512) (0.400) (0.506) (0.533) (1.000) Typical Impedance (Z) in Ohms 100 Laird Technologies Solid ylindrical ore Similar Parts (for reference)
11 HIGH FREQUENY SPLIT / SNP-ON, FERRITE ORES IN PLSTI SES Part Number Fig # HF HF HF HF HF HF HF PLSTI SE DIMENSIONS mm (inches) D (0.511) (0.540) (0.715) (0.827) (0.752) (0.877) (1.142) 3.50 (0.138) 5.44 (0.214) 7.05 (0.278) 6.80 (0.268) 9.09 (0.358) (0.512) (0.992) (1.203) (1.280) (1.642) (1.589) (1.290) (1.280) (0.453) (0.540) (0.744) (0.827) (0.819) (0.860) (1.166) Maximum able Diameter mm (inches) 3.51 (0.138) 4.88 (0.192) 6.60 (0.260) 6.76 (0.266) 9.01 (0.355) (0.400) (0.514) Typical Impedance (Z) in Ohms 1 GHz Laird Technologies Solid ylindrical ore Similar Parts (for reference) HF HF HF HF HF HF HF ll impedance values for high frequency cores are NET; NET impedance is impedance of the ferrite core only. ll impedance contribution from the test wire and fixtures has been removed. -02 = lack Plastic Snap-On ase - Other parts may be available. Please contact Laird Technologies. PLSTI SE SPLIT / SNP-ON PRT DIGRMS Figure 1 Figure 2 Figure 3 D D Figure 4 Figure 5 D 11
12 REFERENE HRT SORTED Y DIMETER () RODND 28 MTERIL PRTS ONLY ONE-PIEE (28) & SPLIT / SNP-ON (28) ORES FOR ROUND LES & WIRES Sorted by Diameter () DIMENSIONS in mm D Sorted by Diameter () DIMENSIONS in mm D * * Refer to pages 7, 8, 9 & 10 for more broadband data. ll chart data can be sorted on lairdtech.com. 12
13 REFERENE HRT SORTED Y DIMETER () RODND 28 MTERIL PRTS ONLY ONE-PIEE (28) & SPLIT / SNP-ON (28) ORES FOR ROUND LES & WIRES Sorted by Diameter () DIMENSIONS in mm D * * * H Sorted by Diameter () DIMENSIONS in mm D Refer to pages 7, 8, 9 & 10 for more broadband data. ll chart data can be sorted on lairdtech.com. 13
14 REFERENE HRT SORTED Y 100 RODND 28 MTERIL PRTS ONLY ONE-PIEE (28) & SPLIT / SNP-ON (28) ORES FOR ROUND LES & WIRES Sorted by Impedance Typical Impedance (Z) in Ohms H Sorted by Impedance Typical Impedance (Z) in Ohms * Refer to pages 7, 8, 9 & 10 for more broadband data. ustom parts are also available 14
15 REFERENE HRT SORTED Y 100 RODND 28 MTERIL PRTS ONLY ONE-PIEE (28) & SPLIT / SNP-ON (28) ORES FOR ROUND LES & WIRES Sorted by Impedance Typical Impedance (Z) in Ohms * * Sorted by Impedance Typical Impedance (Z) in Ohms * * Refer to pages 7, 8, 9 & 10 for more broadband data. ustom parts are also available 15
16 LOW FREQUENY FERRITE EMI ORES FOR ROUND LES & WIRING HRNESSES 300 KHZ TO 30 MHZ OPTIMIZED ING SYSTEM EXMPLE LF Material Type Product Part Size Selected Dimension (Usually Length) dditional Part Description dditional Part Description or oating PRT NUMER LF LF LF LF LF LF LF LF LF LF LF LF LF LF LF DIMENSIONS mm (inches) Typical Impedance (Z) in Ohms (Ω) 500 KHz 1 5 # of Wire Turns # of Wire Turns # of Wire Turns (0.354) 9.50 (0.374) (0.562) (0.562) (0.625) (0.685) (0.713) (0.735) (0.870) (0.984) (1.020) (1.141) (1.220) (1.417) 5.00 (0.197) 5.10 (0.201) 7.92 (0.312) 7.87 (0.310) 9.50 (0.374) (0.400) (0.551) (0.591) (0.505) (0.750) (0.748) (0.905) 7.00 (0.275) (0.750) 7.00 (0.276) (0.530) (0.512) (0.599) (0.512) (0.591) ll impedance values for high frequency cores are NET; NET impedance is impedance of the ferrite core only. ll impedance contribution from the test wire and fixtures has been removed. This catalog lists a limited sample of available parts. ustom parts are also available.. 1 Turn 2 Turns 5 Turns 16
17 RODND FERRITE EMI ORES FOR RION & FLEX LES ING SYSTEM EXMPLE 28 R Material Type Product Part Size Selected Dimension (Usually Length) dditional Part Description dditional Part Description or oating PRT NUMER Fig # on page 20 28R R R R R R R R R R R R R R R R R DIMENSIONS mm (inches) * D E 8.00 (0.315) 9.00 (0.354) 9.80 (0.386) (0.453) (0.453) (0.453) (0.480) (0.480) (0.492) (0.539) (0.551) (0.610) (0.614) (0.614) (0.669) (0.756) 6.00 (0.236) 7.00 (0.276) 7.30 (0.287) 7.00 (0.276) 8.00 (0.315) 8.00 (0.315) 9.50 (0.374) 8.00 (0.315) 8.00 (0.315) 8.30 (0.327) 9.20 (0.362) (0.433) (0.531) (0.535) (0.535) (0.512) (0.591) (0.551) 8.00 (0.315) (0.984) (0.787) (0.551) (0.709) (0.709) (0.787) (0.709) (0.106) 2.70 (0.106) 3.30 (0.130) 5.00 (0.197) 3.00 (0.118) 3.00 (0.118) 2.70 (0.106) 5.50 (0.217) 5.50 (0.217) 5.50 (0.217) 5.30 (0.209) 3.70 (0.146) 3.40 (0.134) 2.80 (0.110) 2.80 (0.110) 3.50 (0.138) 5.35 (0.211) 0.70 (0.028) 0.70 (0.028) 0.80 (0.0315) 2.00 (0.079) 0.70 (0.028) 0.70 (0.028) 0.70 (0.028) 1.00 (0.039) 1.00 (0.039) 1.00 (0.039) 0.80 (0.0315) 0.70 (0.028) 1.40 (0.055) 0.70 (0.028) 0.70 (0.028) 0.75 (0.030) 1.15 (0.045) Typical Impedance (Z) in Ohms ustom parts with double sided mounting tape are available. * roadband (28) ribbon and flex cable cores are sorted by slot width on pages 23 & 24 and sorted by impedance on pages 25 &
18 RODND FERRITE EMI ORES FOR RION & FLEX LES ING SYSTEM EXMPLE 28 R Material Type Product Part Size Selected Dimension (Usually Length) dditional Part Description dditional Part Description or oating PRT NUMER Fig # on page 20 28R R R R R R R R R R R R R R R R R R R DIMENSIONS mm (inches) * D E (0.756) (0.825) (0.852) (0.880) (0.898) (0.898) (0.906) (0.945) (0.984) (0.984) (0.984) (1.022) (1.024) (1.024) (1.101) (1.102) (1.102) (1.102) (0.591) (0.551) (0.689) (0.551) (0.736) (0.736) (0.787) (0.748) (0.827) (0.709) (0.709) (0.866) (0.807) (0.8425) (0.903) (0.906) (0.906) (0.906) (0.925) (0.630) (0.750) (0.750) (0.630) (0.590) (0.945) (0.630) 9.00 (0.354) (0.577) (0.591) (0.787) (1.063) (1.220) 5.35 (0.211) 7.75 (0.305) 5.15 (0.203) 7.75 (0.305) 2.80 (0.110) 2.80 (0.110) 3.00 (0.118) 6.25 (0.246) 3.00 (0.118) 7.70 (0.303) 7.70 (0.303) 5.00 (0.197) 6.00 (0.236) 5.00 (0.197) 7.75 (0.305) 5.80 (0.228) 5.80 (0.228) 6.10 (0.240) 7.70 (0.303) 1.15 (0.045) 0.80 (0.031) 1.00 (0.039) 1.50 (0.059) 0.70 (0.028) 0.70 (0.028) 0.70 (0.028) 1.25 (0.049) 0.80 (0.031) 0.90 (0.035) 0.90 (0.035) 1.20 (0.047) 0.80 (0.031) 0.75 (0.030) 1.50 (0.059) 0.80 (0.031) 0.80 (0.031) 1.10 (0.043) 1.70 (0.067) Typical Impedance (Z) in Ohms
19 RODND FERRITE EMI ORES FOR RION & FLEX LES ING SYSTEM EXMPLE 28 R Material Type Product Part Size Selected Dimension (Usually Length) dditional Part Description dditional Part Description or oating PRT NUMER Fig # on page 20 28R R R R R R R R R R R R R R R R R R R DIMENSIONS mm (inches) * D E (1.177) (1.181) (1.225) (1.236) (1.260) (1.260) (1.260) (1.260) (1.312) (1.340) (1.340) (1.417) (1.417) (1.450) (0.925) (0.925) (0.925) (0.945) (0.945) (0.929) (0.984) (0.975) (0.906) (0.988) (0.988) (1.024) (1.024) (1.063) (1.100) (1.100) (1.024) (1.299) (1.165) (0.980) (0.669) 9.70 (0.382) (1.024) (0.551) (0.551) (1.181) (0.525) (0.748) (1.378) 9.70 (0.382) (1.181) (0.512) (0.984) (1.575) 7.70 (0.303) 7.70 (0.303) 7.70 (0.303) 5.38 (0.212) 5.38 (0.212) 7.50 (0.295) 5.80 (0.288) 8.26 (0.325) 7.75 (0.305) 7.75 (0.305) 7.75 (0.305) 7.00 (0.276) 7.00 (0.276) 6.50 (0.256) 7.00 (0.280) 7.00 (0.280) (0.433) 4.00 (0.157) 7.75 (0.305) 1.70 (0.067) 1.70 (0.067) 1.70 (0.067) 0.80 (0.031) 0.80 (0.031) 1.20 (0.047) 0.80 (0.031) 1.91 (0.075) 1.50 (0.059) 0.90 (0.035) 0.90 (0.035) 1.00 (0.039) 1.00 (0.039) 1.50 (0.059) 1.00 (0.039) 1.00 (0.039) 1.00 (0.039) 1.00 (0.039) 0.75 (0.030) Typical Impedance (Z) in Ohms
20 RODND FERRITE EMI ORES FOR RION & FLEX LES ING SYSTEM EXMPLE 28 R Material Type Product Part Size Selected Dimension (Usually Length) dditional Part Description dditional Part Description or oating PRT NUMER Fig # on page 23 28R R R R R R R R R R R R R R DIMENSIONS mm (inches) * D E (1.457) (1.476) (1.496) (1.500) (1.516) (1.775) (2.500) (2.500) (1.878) (1.953) (2.000) (2.170) (2.170) (3.149) (1.299) (1.358) (1.181) (1.050) (1.055) (1.355) (2.050) (2.050) (1.535) (1.732) (1.600) (1.720) (1.720) (2.700) (0.530) (0.512) (0.984) (1.000) (1.000) (0.511) (1.220) (1.102) (1.000) 4.50 (0.177) 4.00 (0.157) 9.25 (0.364) (0.475) (0.476) (0.490) (0.590) 7.62 (0.300) (0.480) (0.020) 1.00 (0.039) 1.25 (0.049) 1.91 (0.075) 1.91 (0.075) 1.52 (0.060) 1.68 (0.066) 1.68 (0.066) 3.00 (0.118) 1.45 (0.057) 2.00 (0.079) 1.27 (0.050) 1.27 (0.050) 1.91 (0.075) Typical Impedance (Z) in Ohms *roadband (28) ribbon and flex cable cores are sorted by slot width on pages 23 & 24 and sorted by impedance on pages 25 & 26. Ferrite core shape and size affect frequency response and impedance. Please visit lairdtech. com for the most up to date information. ll dimensions & impedance values can be sorted and compared on lairdtech. com. ustom parts are available. FIGURE 1 FIGURE 2 FIGURE 3 E E D D E D 20
21 RODND SPLIT FERRITE ORES FOR RION & FLEX LES Laird Techologies offers a selection of broadband split ribbon and flex cores for retrofit and post-assembly operations. Similar in performance to one-piece core designs, these split ferrite cores provide excellent differential and common mode EMI suppression on flat cable assemblies. Lightweight, inexpensive metal or plastic end clips and cases provide secure closure of the ferrite onto the flat cable. ING SYSTEM EXMPLE 28 S * 0 Material Type Product Part Size Selected Dimension (Usually Length) ase or lip dditional Part Description *0 = No End lip *M = Metal lip *P = Plastic lip * = Hinged ase PRT NUMER Fig # on page 25 *vailable End lip Types 28S N 28S2001-0*0 1 M, P 28S Hinged ase 28S2011-0*0 1 M, P 28S2012-0M0 1 M 28S2022-0*0 1 M, P 28S2023-0M0 1 M DIMENSIONS mm (inches) * D E (0.670) (2.500) (2.641) (3.000) (3.500) (1.775) (1.500) (0.492) (2.050) (2.116) (2.570) (3.080) (1.355) (1.050) (0.590) (1.084) (1.000) 3.40 (0.134) (0.656) 6.48 (0.255) 0.51 (0.020) 0.84 (0.033) 1.91 (0.075) 0.84 (0.033) 0.84 (0.033) 0.84 (0.033) 0.84 (0.033) Typical Impedance (Z) in Ohms 25 ** The D & E dimensions for 28S, split, two piece cores must be doubled for total assembled dimensions. D & E dimensions shown for hinged case parts are for a complete ustom parts with double sided mounting tape and hinged case are available. *roadband (28) ribbon and flex cable cores are sorted by slot width on pages 23 & 24 and sorted by impedance on pages 25 & 26. PLSTI LIP DIGRM METL LIP DIGRM (side view) 21
22 SPLIT FERRITE ORES FOR RION & FLEX LES PRT #28S SPLIT FERRITE ORE SSEMLY WITH HINGED LK PLSTI SE ** To determine total inside slot gap (I.D.) of an assembled split ferrite ribbon core, multiply the E dimension by 2. oth the D and E dimensions must be doubled for assembled core dimensions. FIGURE 1 E D FIGURE 2 FIGURE 3 E D E D SPLIT FERRITE ORES FOR FLT / RION LES RE SOLD S SINGLE SIDES. IT IS NEESSRY TO ORDER TWO SIDES TO FORM ONE SET. [EXEPT 28S (FIGURE 3) WHIH IS SOLD SSEMLED] SPLIT ORE WITH WHITE PLSTI LIPS Plastic lip ssemblies: To specify one core side and one white plastic clip together, replace the second ferrite core part number character after the dash with the letter P (example: 28S2022-0P0). One complete assembly of two ferrite core sides (28 material) with two plastic clips would be specified as follows: 2 of part # 28S2022-0P0. ttachment ears are standard. Metal lip ssemblies: To specify one core side and one metal clip together, replace the second ferrite core part number character after the dash with the letter M (example: 28S2022-0M0). One complete assembly of two ferrite cores (28 material) with two metal clips would be specified as follows: 2 of part # 28S2022-0M0. SPLIT ORE WITH METL LIPS lips for ulk Shipment: To order white plastic end clips (with attachment ears) separately in bulk, specify part number SSE To order metal end clips separately in bulk, specify part number SSE No standard clips are available for 28S
23 QUIK REFERENE HRT SORTED Y SLOT WIDTH () RODND 28 MTERIL PRTS ONLY ONE-PIEE (28R) & SPLIT (28S) ORES FOR RION & FLEX LES Sorted by Slot Width DIMENSIONS mm (inches) D** E** Sorted by Slot Width DIMENSIONS mm (inches) D** E** 28R R R R R R R R R R R R S ** R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R S2023-0M0** R R R R R ** The D & E dimensions for 28S split, two-piece cores must be doubled for total assembled dimensions. ustom parts are also available. Refer to pages for more data. 23
24 QUIK REFERENE HRT SORTED Y SLOT WIDTH () RODND 28 MTERIL PRTS ONLY ONE-PIEE (28R) & SPLIT (28S) ORES FOR RION & FLEX LES Sorted by Slot Width DIMENSIONS mm (inches) D** E** 28R R R R S2022-0*0** R R R R R R R R S2001-0*0** S ** S2011-0*0** R S2012-0M0** ** The D & E dimensions for 28S split, two-piece cores must be doubled for total assembled dimensions. ustom parts are also available Refer to pages for more data. 24
25 QUIK REFERENE HRT SORTED Y 100 RODND 28 MTERIL PRTS ONLY ONE-PIEE (28R) & SPLIT (28S) ORES FOR RION & FLEX LES Sorted by 25 Typical Impedance (Z) in Ohms R R R R R R R R R R R R R R R R R R R R R R R R R R R R Sorted by 25 Typical Impedance (Z) in Ohms R R R R R R R S R R R R R R R R R R R R R R R R R ll chart data can be sorted on lairdtech.com Refer to pages for more data. 25
26 QUIK REFERENE HRT SORTED Y 100 RODND 28 MTERIL PRTS ONLY ONE-PIEE (28R) & SPLIT (28S) ORES FOR RION & FLEX LES Sorted by 25 Typical Impedance (Z) in Ohms R R R R S R R R R S2012-0M S2023-0M S2022-0* R R R R R S2001-0* S2011-0* R R R ll chart data can be sorted on lairdtech.com Refer to pages for more data. 26
27 FERRITE EMI DISKS ND PLTES Ferrite disks and plates provide a simple, cost-effective solution for radiated and inductively-coupled electromagnetic interference. fter the P board soldering process, a ferrite disk or plate can be installed directly on the source of EMI (such as active devices or unwanted antennas). SYSTEM EXMPLE M M M - Material M - Disk P - Plate Part Size Indentification Thickness FETURES: Easy installation Each part for volume production is provided with permanent, double sided 3,5 mil acrylic adhesive with 218 oz. / inch2 adhesion Samples and sample kits are available with removable and reusable adhesive for trial and error testing Variety of sizes offered ustom parts also available. PPLITIONS: Ferrite disks and plates can be utilized either as inductively coupled components or EMI shields on P board components and traces. Inductive coupling occurs when the ferrite affects the conducted wave form leaving the active component. The rise time of the wave form is effectively slowed by the ferrite, and the overshoot and associated ringing are attenuated. EMI shielding occurs when the ferrite absorbs the radiated emissions from active components, effectively protecting other boards or components in the vicinity from radiated contamination an be used to locate unwanted EMI antennas Flat flex & ribbon cables an also provide retrofit, auxiliary EMI attenuation Wireless harger EXMPLE PPLITION d down (relative to baseline noise) MP HP MP MM MM MM MM MM MP MP MP MP MP MP MP MP MP MP MP MP mm (inches) mm (inches) (0.650) (0.787) (0.787) (1.400) (1.400) (0.315) (0.315) (1.040) (0.350) (0.433) (0.433) (0.512) (0.512) (0.827) (0.591) (0.591) (0.591) (0.760) (0.760) (1.040) (1.040) (1.040) (1.040) (1.040) (1.040) (1.496) (1.496) (2.087) (2.087) mm (inches) 1.27 (0.050) 1.27 (0.050) 1.91 (0.075) 1.91 (0.075) 2.54 (0.100) 2.00 (0.079) 1.27 (0.050) 1.96 (0.077) 2.00 (0.079) 2.00 (0.079) ) 1.27 (0.050) 1.27 (0.050) 1.91 (0.075) 2.25 (0.089) 2.00 (0.079) 2.50 (0.099) Frequency EXMPLE PPLITION GRPH EXPLNTION: The zero line on the graph represents the base line noise recorded for an unprotected microprocessor. The curve (d down) represent the performance of the Laird Technologies ferrite plate relative to the baseline. The addition of the ferrite plates to the top of the processor in this specific application exhibits up to a 5 d EMI reduction relative to the unprotected part. Performance can vary with different sizes, materials, processors and applications. Disk DHESIVE Plate DHESIVE 27
28 SMPLE KIT LISTS RODND EMI FERRITE YLINDRIL EMI ORES, SPLIT/SNP-ON ORES PRTS ND SUPPLIES FOR SMPLE KIT# K-401 EMI QTY PER KIT PRTS ND SUPPLIES FOR SMPLE KIT# K-402 EMI SML QTY PER KIT
29 SMPLE KIT LISTS RODND EMI FERRITE SPLIT/SNP-ON ORES PRTS ND SUPPLIES FOR SMPLE KIT# K-403 EMI DEMO QTY PER KIT PRTS ND SUPPLIES FOR SMPLE KIT# K-404 EMI QTY PER KIT
30 SMPLE KIT LISTS ONE-PIEE(28R) & SPLIT (28S) ORES FOR RION & FLEX LES HIGH FREQUENY FERRITE YLINDRIL, SPLIT, SNP-ON ORES 30 PRTS ND SUPLIES FOR SMPLE KIT# K-406 EMI R QTY PER KIT 28R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R S S2023-0M0 4 28S PRTS ND SUPPLIES FOR SMPLE KIT# K-409 EMI HF QTY PER KIT HF HF HF HF HF HF HF HF HF HF HF HF HF HF HF HF HF HF HF HF HF HF HF HF HF
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