Magnetic Actuators Datasheet by Littelfuse Inc.

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littelfuse.com© 2015 Littelfuse Revised: 11/03/15
Specifications are subject to change without notice.
Magnetic Actuators
Magnets and Actuators
Product
Series Description
Overall Dimensions
Material Retentivity Coercivity Recommended Operating Temp.
mm (inch) ˚C
L x W x H Gauss Oersted Max.
H-31 AlNiCo Magnet 12.70 (0.500) x 1.60 (0.062) x 1.60 (0.062) AlNiCo-5 10,900 620 450
H-32 AlNiCo Magnet 25.40 (1.000) x 4.80 (0.190) x 4.80 (0.190) AlNiCo-5 10,900 620 450
H-33 AlNiCo Magnet 19.10 (0.750) x 3.20 (0.120) x 3.20 (0.120) AlNiCo-5 10,900 620 450
H-34 AlNiCo Magnet 25.40 (1.000) x 6.35 (0.250) x 6.35 (0.250) AlNiCo-5 10,900 620 450
H-40 Neodymium Magnet 7.62 (0.300) x 3.18 (0.125) x 3.18 (0.125) NdFeB 45H 13,300 11,800 120
H-41 Neodymium Magnet 19.05 (0.750) x 3.18 (0.125) x 3.18 (0.125) NdFeB 35H 11,700 10,800 120
H-58 Neodymium Magnet 21.00 (0.827) x 7.00 (0.276) x 4.70 (0.185) NdFeB 35H 11,700 10,800 120
57105 Actuator for Terminal Flange Mount Sensor 40.17 (1.582) x 19.05 (0.750) x 6.35 (0.250) AlNiCo-5 11,000 620 105
57125 Actuator for Pinned Flange Mount Sensor 28.57 (1.125) x 19.05 (0.750) x 6.35 (0.250) AlNiCo-5 11,000 620 105
57135 Actuator for High-Temp Flange Mount Sensor 28.57 (1.125) x 19.05 (0.750) x 6.35 (0.250) AlNiCo-5 12,800 640 150
57140 Actuator for Mini Flange Mount Sensor 23.00 (0.906) x 14.00 (0.551) x 6.00 (0.236) AlNiCo-5 11,000 620 105
57141 Actuator for Mini Flange Mount Sensor 23.00 (0.906) x 14.00 (0.551) x 6.00 (0.236) AlNiCo-5 11,000 620 105
57142 Actuator for Mini Flange Mount Sensor 23.00 (0.906) x 14.00 (0.551) x 6.00 (0.236) NdFeB 35H 11,700 10,800 105
57145 Actuator for Flange Mount Sensor 28.57 (1.125) x 19.05 (0.750) x 6.35 (0.250) AlNiCo-5 11,000 620 105
57150 Actuator for Flange Mount Sensor 28.57 (1.125) x 19.05 (0.750) x 6.35 (0.250) AlNiCo-5 11,000 620 105
57045 Actuator for Mini PCB Mount Overmolded 17.78 (0.700) x 3.30 (0.130) x 4.32 (0.170) AlNiCo-5 11,000 620 105
57050 Actuator for PCB Mount Overmolded 22.86 (0.900) x 4.57 (0.180) x 4.57 (0.180) AlNiCo-5 11,000 620 105
Product
Series Description
Overall Dimensions
Material Retentivity Coercivity Recommended Operating Temp.
mm (inch) ˚C
Ø x L Gauss Oersted Max.
H-35 Neodymium Magnet 6.35 (0.250) x 6.35 (0.250) NdFeB 35H 11,700 10,800 120
H-48 Neodymium Magnet 4.40 (0.173) x 6.00 (0.236) NdFeB 35SH 11,700 10,800 150
CM-1 Ceramic Magnet 12.70 (0.500) x 5.08 (0.200) Ceramic-5 3,900 2,400 250
H-36 AlNiCo Magnet 4.60 (0.182) x 25.40 (1.000) AlNiCo-5 12,800 640 450
H-315 AlNiCo Magnet 3.00 (0.118) x 15.00 (0.590) AlNiCo-5 11,000 620 450
H-420 AlNiCo Magnet 4.00 (0.157) x 20.0 (0.787) AlNiCo-5 11,000 620 450
H-625 AlNiCo Magnet 6.00 (0.236) x 25.0 (0.984) AlNiCo-5 11,000 620 450
57020 Actuator for Mini Firecracker 5.10 (0.201) x 15.24 (0.600) AlNiCo-5 11,000 620 105
57022 Actuator for Firecracker 5.80 (0.228) x 25.40 (1.000) AlNiCo-5 11,000 620 105
57025 Actuator for Firecracker 6.22 (0.245) x 25.40 (1.000) AlNiCo-5 11,000 620 105
57030 Actuator for Long Firecracker 6.22 (0.245) x 38.10 (1.500) AlNiCo-5 11,000 620 105
57040 Actuator for Firecracker with Retaining Ribs 10.70 (0.420) x 31.00 (1.220) NdFeB 35H 11,700 10,800 105
57060 Actuator for Stainless Steel Threaded Barrel Sensor M8 x 1.25 Pitch x 36.00 (1.420) AlNiCo-5 11,000 620 105
57065 Actuator for Threaded Barrel Sensor (Standard) (5/16 x 24) Pitch x 38.10 (1.500) AlNiCo-5 11,000 620 105
57070 Actuator for Threaded Barrel Sensor (Metric) M8 x 1.25 Pitch x 38.10 (1.500) AlNiCo-5 11,000 620 105
57075 Actuator for Heavy Duty Threaded Barrel Sensor M12 x 1.00 Pitch x 46.00 (1.810) Ceramic-2 2,900 2,400 105
Description
Littelfuse offers a wide range of magnetic actuators that are packaged in shapes
similar to the relative mating sensors. We also offer a limited family of bare
magnets with various grades of materials, including ferrite (ceramic), AlNiCo and
neodymium iron boron (NdFeB) materials.
Rectangular Actuators
These rectangular bare magnets and packaged actuators are ideally suited for mounting on a flat surface. They are suitable for use in a wide range of environments,
including high-temperature applications.
Cylindrical Actuators
Designed for mounting on a frame, these cylindrical bare magnets and packaged actuators are appropriate for use in a wide range of environments, including
high-temperature applications.

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