Radial Magnetized Sintered Neodymium Disc Magnets for Earphones / Microphones
| Place of Origin: | Zhejiang |
|---|
Company Profile
| Location: | Guangzhou, Guangdong, China (Mainland) |
|---|---|
| Business Type: | Manufacturer |
| Main Products: | NdFeb Magnet, Injection Molded Magnet, Neodymium Disc Magnets |
Product Detail
| Model No.: | MJMN: NDM09 |
|---|
Product Description
Sintered Neodymium Permanent Magnet Disc for Earphones and Microphones
Headphones/Earphones/Microphones inside the coil through audio current (with sound size change)
generates changing magnetic field.Because audio current intensity is constantly changing, so the
magnetic field force of interaction between also in constant change, headphones sound film is kept
in vibration, and sound.Visible, headphones, no magnets inside (magnet) is unable to complete the
electric (flow) of acoustic (sound).
Product Description & Specification:
Grades
|
Standard
Properties
of
Sintered
NdFeB
Magnet
|
Grade |
Br mT (kGs) |
Hcb kA/m (kOe) |
Hcj kA/m (kOe) |
(BH)max kJ/m 3 |
Max Work Temp. |
|
|
|
|
|
(MGOe) |
(Tw) |
|
|
N35 |
1170-1220(11.7-12.2) |
≥ 868( ≥ 10.9) |
≥ 955( ≥ 12) |
263-287(33-36) |
80 ºC |
|
|
N38 |
1220-1250(12.2-12.5) |
≥ 899( ≥ 11.3) |
≥ 955( ≥ 12) |
287-310(36-39) |
||
|
N40 |
1250-1280(12.5-12.8) |
≥ 907( ≥ 11.4) |
≥ 955 ( ≥ 12) |
302-326(38-41) |
||
|
N42 |
1280-1320(12.8-13.2) |
≥ 915( ≥ 11.5) |
≥ 955( ≥ 12) |
318-342(40-43) |
||
|
N45 |
1320-1380(13.2-13.8) |
≥ 923( ≥ 11.6) |
≥ 955 ( ≥ 12) |
342-366(43-46) |
||
|
N48 |
1380-1420(13.8-14.2) |
≥ 923( ≥ 11.6) |
≥ 876( ≥ 12) |
366-390(46-49) |
||
|
N50 |
1400-1450(14.0-14.5) |
≥ 796( ≥ 10.0) |
≥ 876( ≥ 11) |
382-406(48-51) |
||
|
N52 |
1430-1480(14.3-14.8) |
≥ 796( ≥ 10.0) |
≥ 876( ≥ 11) |
398-422(50-53) |
||
|
35M |
1170-1220(11.7-12.2) |
≥ 868( ≥ 10.9) |
≥ 1114( ≥ 14) |
263-287(33-36) |
100 ºC
|
|
|
38M |
1220-1250(12.2-12.5) |
≥ 899( ≥ 11.3) |
≥ 1114( ≥ 14) |
287-310(36-39) |
||
|
40M |
1250-1280(12.5-12.8) |
≥ 923( ≥ 11.6) |
≥ 1114( ≥ 14) |
302-326(38-41) |
||
|
42M |
1280-1320(12.8-13.2) |
≥ 955( ≥ 12.0) |
≥ 1114( ≥ 14) |
318-342(40-43) |
||
|
45M |
1320-1380(13.2-13.8) |
≥ 995( ≥ 12.5) |
≥ 1114 ( ≥ 14) |
342-366 (43-46) |
||
|
48M |
1360-1430(13.6-14.3) |
≥ 1027( ≥ 12.9) |
≥ 1114( ≥ 14) |
366-390(46-49) |
||
|
50M |
1400-1450(14.0-14.5) |
≥ 1033 ( ≥ 13.0) |
≥ 1114( ≥ 14) |
382-406(48-51) |
||
|
35H |
1170-1220(11.7-12.2) |
≥ 868 ( ≥ 10.9) |
≥ 1353( ≥ 17) |
263-287(33-36) |
120 ºC
|
|
|
38H |
1220-1250(12.2-12.5) |
≥ 899 ( ≥ 11.3) |
≥ 1353 ( ≥ 17) |
287-310(36-39) |
||
|
40H |
1250-1280(12.5-12.8) |
≥ 923( ≥ 11.6) |
≥ 1353( ≥ 17) |
302-326(38-41) |
||
|
42H |
1280-1320(12.8-13.2) |
≥ 955 ( ≥ 12.0) |
≥ 1353( ≥ 17) |
318-342(40-43) |
||
|
45H |
1300-1360(13-13.6) |
≥ 963( ≥ 12.1) |
≥ 1353 ( ≥ 17) |
326-358(43-46) |
||
|
48H |
1370-1430(13.7-14.3) |
≥ 995( ≥ 12.5) |
≥ 1353( ≥ 17) |
|