D3*4mm Mini Round NdFeB Magnet for Loudspeaker

2022-08-14 02:03:37
  • Model NO.: sqj-069
  • Shape: Round
  • Product Name: Speaker Motor Magnets
  • Max Operation Temp: 220 Degree Centigrade
  • Company Certificae: Isotsi16949:2009
  • Maxmium Br: 12.1kgs
  • Hcj: 35koe
  • Trademark: COCO
  • Origin: China Mainland
  • Application: Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet
  • Coating: Zinc
  • Size: Customed
  • Product Certificate: RoHS
  • Coatings: Ni, Zn, Gold, Copper, Epoxy, etc
  • Hcb: 10.7koe
  • Type: Permanent
  • Specification: ROHS
  • HS Code: 85051110
Neodymium Loudspeakers have several advantages over traditional ceramic magnet designs. Typically they are much lighter and more powerful than conventional speakers which use ferrite, AlNiCo or Samarium Cobalt magnets. Neodymium speakers often have motors that use a small cylindrical slug or ring magnet that is encased in a low carbon steel pot structure. The magnetic flux which is already more than 10 times higher than any other material is concentrated across the "gap" where the voice coil moves back and forth. The strength of the motor (BxL) increases so efficiency goes up and the whole magnetic structure becomes more compact. Typically Neo speakers have the additional benifit of not causing any (EMI) interference from stray magnetic flux so by definition they are video shielded. Neodymium magnets are part of the material science of the future with applications growing everyday. One example is the fast growing earbud market. Neo has made it possible to essentially shrink down headphones to sizes that will fit inside your ears. In addition they are also efficient enough to produce high volume sound from small battery powered devices with low amplifier output such as walkmans, MP3 players, tablets, laptops and cell phones.

The competitive advantages are as follows:
1. Wide product range, covering all grades from N series to AH series.
2. Samples and small quantity are available.
3. Stock raw metal materials for shorter lead time.
4. Comparatively low price.
5. Reliable quality and technology innovation.

Contact Person: Candy
MB: 008613957886507
High Performance Sinterated NdFeB Magnet Item Grade Remanence;Br Coercive Force;bHc Intrisic Coercive Force;iHc Max Energy Product;(BH)max Working
Temp.
 
kGs T kOe KA/m kOe KA/m MGOe KJ/m3
Max. Min. Max. Min. Max. Min. Max. Min.
N N54 15.1  14.5  1.51  1.45  ≥10.5 ≥836 ≥11 ≥876 55 51 438 406 ≤80
N52 14.8  14.2  1.48  1.42  ≥10.5 ≥836 ≥11 ≥876 53 49 422 390 ≤80
N50 14.5  14.0  1.45  1.40  ≥11.0 ≥876 ≥12 ≥955 51 47 406 374 ≤80
N48 14.3  13.7  1.43  1.37  ≥11.0 ≥876 ≥12 ≥955 49 45 390 358 ≤80
N45 13.8  13.2  1.38  1.32  ≥11.0 ≥876 ≥12 ≥955 46 42 366 334 ≤80
N42 13.5  12.9  1.35  1.29  ≥11.0 ≥876 ≥12 ≥955 44 40 350 318 ≤80
N40 13.2  12.6  1.32  1.26  ≥11.0 ≥876 ≥12 ≥955 41 38 334 302 ≤80
N38 13.0  12.2  1.30  1.22  ≥11.0 ≥876 ≥12 ≥955 40 36 318 287 ≤80
N35 12.2  11.7  1.22  1.17  ≥10.9 ≥868 ≥12 ≥955 36 33 287 263 ≤80
M N52M 14.8  14.2  1.48  1.42  ≥13.3 ≥1059 ≥14 ≥1114 43 49 422 390 ≤100
N50M 14.5  14.0  1.45  1.40  ≥13.1 ≥1043 ≥14 ≥1114 41 47 406 374 ≤100
N48M 14.3  13.7  1.43  1.37  ≥12.8 ≥1019 ≥14 ≥1114 49 45 390 358 ≤100
N45M 13.8  13.2  1.38  1.32  ≥12.4 ≥987 ≥14 ≥1114 46 42 366 334 ≤100
N42M 13.5  12.9  1.35  1.29  ≥12.1 ≥963 ≥14 ≥1114 44 40 350 318 ≤100
N40M 13.2  12.6  1.32  1.26  ≥11.8 ≥939 ≥14 ≥1114 41 38 334 302 ≤100
N38M 13.0  12.2  1.30  1.22  ≥11.7 ≥915 ≥14 ≥1114 40 36 318 287 ≤100
N35M  12.2  11.7  1.22  1.17  ≥10.9 ≥868 ≥14 ≥1114 36 33 287 263 ≤100
H N50H 14.5  14.0  1.45  1.40  ≥12.9 ≥1027 ≥16 ≥1274 51 47 406 374 ≤120
N48H 14.3  13.7  1.43  1.37  ≥12.7 ≥1011 ≥16 ≥1274 49 45 390 358 ≤120
N46H 14.0  13.4  1.40  1.34  ≥12.5 ≥995 ≥17 ≥1353 47 43 374 342 ≤120
N44H 13.7  13.1  1.37  1.31  ≥12.3 ≥979 ≥17 ≥1353 45 41 358 326 ≤120
N42H 13.5  12.9  1.35  1.29  ≥12.1 ≥963 ≥17 ≥1353 44 40 350 318 ≤120
N40H 13.2  12.6  1.32  1.26  ≥11.8 ≥939 ≥17 ≥1353 42 38 334 302 ≤120
N38H 13.0  12.2  1.30  1.22  ≥11.5 ≥915 ≥17 ≥1353 40 36 318 287 ≤120
N35H 12.4  11.7  1.24  1.17  ≥11.0 ≥876 ≥17 ≥1353 37 33 295 263 ≤120
N33H 11.7  11.3  1.17  1.13  ≥10.5 ≥836 ≥17 ≥1353 34 31 271 247 ≤120
SH N45SH 14.0  13.4  1.40  1.34  ≥12.5 ≥995 ≥20 ≥1592 47 43 374 342 ≤150
N44SH 13.7  13.1  1.37  1.31  ≥12.3 ≥979 ≥20 ≥1592 45 41 358 326 ≤150
N42SH 13.5  12.9  1.35  1.29  ≥12.1 ≥963 ≥20 ≥1592 44 40 350 318 ≤150
N40SH 13.2  12.6  1.32  1.26  ≥11.8 ≥939 ≥20 ≥1592 42 38 334 302 ≤150
N38SH 12.9  12.2  1.29  1.22  ≥11.5 ≥915 ≥20 ≥1592 40 36 318 287 ≤150
N35SH 12.4  11.7  1.24  1.17  ≥11.0 ≥876 ≥20 ≥1592 37 33 295 263 ≤150
N33SH 12.1  11.4  1.21  1.14  ≥10.7 ≥852 ≥20 ≥1592 35 31 279 247 ≤150
UH N42UH 13.5  12.9  1.35  1.29  ≥12.1 ≥963 ≥25 ≥1990 44 40 350 318 ≤180
N40UH 13.2  12.6  1.32  1.26  ≥11.8 ≥939 ≥25 ≥1990 42 38 334 302 ≤180
N38UH 12.9  12.2  1.29  1.22  ≥11.5 ≥915 ≥25 ≥1990 40 36 318 287 ≤180
N35UH 12.4  11.7  1.24  1.17  ≥11.0 ≥876 ≥25 ≥1990 37 33 295 263 ≤180
N33UH 12.1  11.4  1.21  1.14  ≥10.7 ≥852 ≥25 ≥1990 35 31 279 247 ≤180
N30UH 11.6  10.8  1.16  1.08  ≥10.2 ≥812 ≥25 ≥1990 32 28 255 223 ≤180
EH N38EH 12.9  12.2  1.29  1.22  ≥11.5 ≥915 ≥30 ≥2388 40 36 318 287 ≤200
N35EH 12.4  11.7  1.24  1.17  ≥11.0 ≥876 ≥30 ≥2388 37 33 295 263 ≤200
N33EH 12.1  11.4  1.21  1.14  ≥10.7 ≥851 ≥30 ≥2388 35 31 279 247 ≤200
N30EH 11.5  10.8  1.15  1.08  ≥10.2 ≥812 ≥30 ≥2388 32 28 255 223 ≤200
AH N33AH 12.1  11.4  1.21  1.14  ≥10.7 ≥852 ≥35 ≥2786 35 31 279 247 ≤230
N30AH 11.5  10.8  1.15  1.08  ≥10.2 ≥812 ≥35 ≥2786 32 28 255 223 ≤230
N28AH 11.2  10.4  1.12  1.04  ≥9.70 ≥772 ≥35 ≥2786 30 26 239 207 ≤230
 

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