※Ferrite Ring magnet ※Ferrite block magnet ※Ferrite tile magnet ※Ferrite wafer magnet ※Ferrite column magnet
■Magnet Standard ■Demagnitization curves of material
Chinese standard
Standard same with TDK FB5E
Material
Br
Hcb
Hcj
(BH)max
mT
KG
KA/m
KOe
KJ/m3
MGOe
C1
230
2.3
148
1.86
258
3.5
8.36
1.05
C5
380
3.8
191
2.4
199
2.5
27
3.4
C7
340
3.23
318
4.00
21.9
2.75
C8(C8A)
385
3.85
235
2.95
242
3.05
27.8
C9
280
3.516
320
4.01
26.4
3.32
C10
400
4.0
288
3.617
3.51
30.4
3.82
C11
430
4.3
200
2.512
204
2.56
34.4
4.32
Europe standard
The standard from International Electronics Committee (IEC404-8-1)
O×100=Y10T=C1 O×300=Y30=C5 O×330=Y30BH
Grade
Allowed Value (min/typical)
HF8/22
200/220
2.00/2.20
125/140
1.57/1.76
220/230
2.76/2.89
6.5/6.8
0.8/1.1
HF20/19
320/333
3.20/3.33
170/190
2.14/2.39
190/200
2.39/2.51
20.0/21.0
2.5/2.7
HF20/28
310/325
3.10/3.25
280/290
3.52/3.64
HF22/30
350/365
3.5/3.65
255/265
290/300
3.64/3.77
22.0/23.5
2.8/3.0
HF24/16
155/175
1.95/2.20
160/180
2.01/2.26
24.0/25.5
3.0/3.2
HF24/23
360/370
230/240
2.89/3.01
HF24/35
370/380
3.60/3.70
260/270
3.27/3.39
350/360
4.40/4.52
HF26/16
3.70/3.80
26.0/27.0
3.2/3.4
HF26/18