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Axially magnetized: the north and south poles are on the two flat faces.NS
Magnetization directionAxially magnetized: the north and south poles are on the two flat faces.Arrows show the direction of magnetization inside the magnet, pointing toward north.

5mm × 3mm N35 axially magnetized neodymium disk for Hall, reed, AMR/TMR, proximity and position sensing. Greater thickness provides more magnetic volume than ultra-thin sensor disks; validate field at the actual working gap.

⬇ Download CAD STEP / STL / DXF / PDF drawingnominal geometry, pre-filled with this part’s dimensions

9809 – N35 Neodymium Disk Magnet 5 x 3 mm Axial

Description
Additional information
Coatings
Magnetization
BH Curves

SKU 9809 is an N35 neodymium disk magnet measuring 5 mm diameter × 3 mm thick for Hall-effect, reed-switch, AMR/TMR, proximity, and position-sensing applications. Axially magnetized through the 3 mm thickness, it offers more magnetic volume than an ultra-thin sensor disk while retaining a compact cylindrical form.

Specifications

Magnet Size 5 mm diameter × 3 mm thick
Tolerance ±0.004 in
Material NdFeB
Grade N35
Coating Ni-Cu-Ni
Magnetization Axial, through thickness
Listed Remanence (Br) 12,100 gauss
Listed Surface Field 4,629.33 gauss
Listed Maximum Energy Product 35 MGOe
Listed Pull Force 1.74 lb
Listed Maximum Temperature 80°C / 176°F

Sensor design considerations

The listed surface-gauss and pull-force values do not by themselves define sensor performance. For a magnetic sensor, specify and validate the field magnitude and orientation at the actual working gap. Mechanical offset, nearby ferromagnetic material, temperature, and tolerance stack-up can change the field seen by the sensor.

See How Sensor Magnets Work for Hall, TMR, AMR, and rotary-sensing guidance. Use the Magnet Field Distance Calculator for preliminary gap analysis, or browse Sensor Magnets to compare stock sizes.

Procurement and custom sensor magnets

For alternate diameters, thicknesses, grades, tighter orientation control, or production quantities, compare the Neodymium Magnet Grades Chart and use the Magnet RFQ Builder.

Weight 0.000974 lbs
Dimensions 0.1969 × 0.1969 × 0.1181 in
Diameter

5mm

Thickness

3mm

Strength / Grade

N35

Magnetization Direction

Axial

Pull Force

1-5lbs

Shape

Disk / Disc

Coatings

Surface Coating Thickness(microns) Color Resistance
Passivation 1 Silver Grey Temporary Protection
Nickel Ni Ni
Ni Cu Ni
10-20 Bright Silver Excellent Against Humidity
Zinc Zn
Cu Zn
8-20 Bright Blue
Shinny Color
Good Against Salt Spray
Excellent against Salt Spray
Tin Ni Cu Sn 15-20 Silver Superior Against Humidity
Gold Ni Cu Au 10-20 Gold Superior Against Humidity
Copper Ni Cu 10-20 Gold Temporary Protection
Epoxy Epoxy
Ni Cu Epoxy
Zn Epoxy
15-25 Black, Red,
Grey
Excellent Against Humidity
& Salt Spray
Chemical Ni 10-20 Silver grey Excellent Against Humidity
Axially magnetized: the north and south poles are on the two flat faces.NS
Magnetization directionAxially magnetized: the north and south poles are on the two flat faces.Arrows show the direction of magnetization inside the magnet, pointing toward north.

BH Curves

1060 in stock (can be backordered)

Quantity Price Per Magnet
1 - 9 $0.45
10 - 49 $0.42
50 - 99 $0.41
100 - 999 $0.38
1000 - 4999 $0.32
5000 - 9999 $0.27
10000 + $0.23
EAN / UPC: 0190000198576GTIN: 0190000198576 SKU 9809 Categories , , , , Tags , , , , ,
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