HKZ 121
Hall-Effect Vane Switch
Features
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HKZ 121
Bipolar IC
Contactless switch with open collector
output (40 mA)
Static switching
High switching frequency
Hermetically sealed with plastic
Unaffected by dirt, light, vibration
Large temperature and voltage range
Integrated overvoltage protection
High interference immunity
Integrated capacitors for EMI protection
P-HKZ-3-1
Type
HKZ 121
Ordering Code
Package
Q67000-A9097-A401 P-HKZ-3-1
The Hall-effect vane switch HKZ 121 is a contactless switch consisting of a monolithic
integrated Hall-effect circuit and a special magnetic circuit hermetically sealed in a plastic
package. The switch is actuated by a soft-iron vane which is passed through the air gap
between magnet and Hall sensor.
The main application field is in cars, i.e. as a breakerless trigger in electronic ignition systems.
Numerous industrial applications can be found in control engineering, especially in those areas
where switches must operate maintenance-free under harsh environmental conditions (e.g.
rpm sensor, limit switch, position sensor, speed measurement, shaft encoder, scanning of
coding disks, etc.).