MG Series
MAGNET SELECTION GUIDE
The below guide is designed to aid in determining the best magnet for use with a Hall-effect or magnetoresistive sensor. There are several
factors to consider when choosing a magnet. The most important is gap distance. There must be a strong enough magnetic Gauss level
to operate the sensor at the correct distance. By using the maximum operate magnetic Gauss characteristics, you can determine which
magnet will operate the sensor. The other important factors include temperature and physical environment of the application. The Gauss
levels below are typical values only and not guaranteed rated specifications.
Table 3. Magnet Selection Guide
Gap Distance mm [in]** and Gauss Level (G)
@ 25 ° C [77 °F] †
Material
and
Process
Catalog
Listing
Physical
Strength
Temperature
Range*
0,25 mm 0,76 mm 1,27 mm 2,54 mm 3,81 mm 5,08 mm
[0.01 in] [0.03 in]
[0.05 in]
[0.10 in]
205
810
470
470
470
470
120
940
120
370
280
940
750
[0.15 in]
115
575
295
295
295
295
55
[0.20 in]
Alnico VI
Sintered
-40 °C to 250 °C
-40 °F to 482 °F
101MG2L1
101MG3
101MG7
101MG8
102MG11
102MG15
103MG5
103MG8
104MG1
104MG2
104MG3
106MG10
107MG1***
Good
Good
Good
Good
Good
Good
Poor
Poor
Poor
Poor
Poor
Poor
Good
Good
Poor
Good
730
550
1320
900
410
75
Alnico V
Cast
-40 °C to 300 °C
-40 °F to 572 °F
Fair
1460
1050
1050
1050
1050
1110
2620
1110
2500
2350
2620
7800
1170
755
420
195
195
195
195
25
Alnico VIII
Sintered
-40 °C to 250 °C
-40 °F to 482 °F
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Excellent
Excellent
Excellent
Excellent
Excellent
Excellent
Excellent
Excellent
Excellent
Excellent
Excellent
Alnico VIII
Sintered
-40 °C to 250 °C
-40 °F to 482 °F
900
755
Alnico VIII
Sintered
-40 °C to 140 °C
-40 °F to 284 °F
900
755
Alnico VIII
Sintered
-40 °C to 140 °C
-40 °F to 284 °F
900
755
Rare Earth
Pressed
-40 °C to 200 °C
-40 °F to 392 °F
630
365
Rare Earth
Pressed
-40 °C to 200 °C
-40 °F to 392 °F
2100
630
1600
365
550
55
350
25
Rare Earth
Pressed
-40 °C to 150 °C
-40 °F to 302 °F
Rare Earth
Pressed
-40 °C to 150 °C
-40 °F to 302 °F
1600
1400
2100
7800
1000
800
140
100
550
550
70
Rare Earth
Pressed
-40 °C to 150 °C
-40 °F to 302 °F
50
Rare Earth
Pressed
-40 °C to 150 °C
-40 °F to 302 °F
1600
7800
350
375
Alnico VIII
Sintered
-40 °C to 140 °C
-40 °F to 284 °F
*Magnet exibits good stability over indicated temperature range
**Gap distance from sensing surface
***Measurement device saturated @ 800 Gauss
†Millitesla = Gauss × 10-1
sensing.honeywell.com
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HONEYWELL [ Honeywell ]
