SM3600AP

SEIKO NPC CORPORATION - 10

DESIGN PRECAUTIONS

Effect of Bias Magnet and Magnetic Field

The SM3600AP is equipped with a bias magnet. The SM3600AP functions and performance are susceptible to the effects of external

magnetic fields, especially in the magnetic detection direction (Y axis in the following figure), which should be taken into consideration

when designing detection mechanisms. When using a multi SM3600AP arrangement, maintain an interval of 40 mm (min) between

devices along theYaxis to prevent mutual interference between the bias magnets. Devices may be placed closer along the X axis.

Multi SM3600AP arrangement example

Effect on Magnetic Field Due to Static Electricity

When the transport system is moving non-conductive objects, such as paper, across the device surface, the object may become

electrostatically charged by the carrying mechanism material. The SM3600AP can detect the momentary magnetic field generated by

current flowing during an electrostatic discharge, which may appear as output noise. Accordingly, anti-static measures should be taken into

consideration when designing detection mechanisms. When covering the SM3600AP package surface, the use of non-insulating materials,

such as conductive resin material or non-magnetic metals, is recommended.

≥ 40mm

Y axis (magnetic detection direction)