Appendix
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www.nve.com phone: 952-829-9217 fax: 952-829-9189
Recommended Solder Reflow Profile
NVE recommends the following soldering profile:
300
For leaded (Pb) parts, the peak temperature shown in this profile can be decreased to as low as 230°C.
Exceeding 265°C at peak or the time at peak temperature shown in this profile can damage the parts.
Specifically:
1. AA- and AD-Series sensors are rated at 150°C maximum storage temperature. They can withstand
the solder profile shown above with no harmful effects. However, temperatures above 265°C for
even a brief period or extended periods above 160°C can cause degradation of the GMR sensor
element.
2. AKL- and DD-Series parts contain an on-chip EEPROM. Exposure to temperatures in excess of
265°C can cause EEPROM data corruption, which will cause the parts to fall out of specification.
Appendix
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www.nve.com phone: 952-829-9217 fax: 952-829-9189
Magnet Data
NVE supplies Ceramic 8 magnets in some of our GMR sensor evaluation kits. The characteristics for
these magnets are given below:
Material Type Ceramic 8 (C8)
Maximum Operating Temperature 300°C
Curie Temperature 450°C
Temperature Coefficient of Flux Density -0.20 %/°C
Maximum Energy Product 3.5 MGOe
Residual Induction 3850 Gauss
Coercive Force 2950 Oersteds
Ceramic 8 Magnetic Characteristics
500
1000
1500
2000
2500
3000
3500
4000
4500
Flux Density, Gauss (G)
-35C
+25C
+85C
0
-5000 -4000 -3000 -2000 -1000 0
Demagnetizing Force, Oersteds (Oe)
Appendix
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www.nve.com phone: 952-829-9217 fax: 952-829-9189
Magnet drawings for the two round disc magnets included in the GT Sensor evaluation kits are given
below. These magnets are available from NVE as production parts. Contact NVE for pricing and
delivery information. In addition, NVE can have custom magnets built for specific applications in
Ceramic 8 or Alnico 8 materials. Please contact NVE for more details.
Magnet Part Number Diameter (mm) Length (mm)
12216 6 4
12217 3.5 4
N
Note: All Dimensions in mm.
N
Ceramic 8 Disc Magnets
SS

ADH025-00E

Mfr. #:
Manufacturer:
Description:
MAGNETIC SWITCH OMNIPOLAR 8MSOP
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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