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DPFlex Sensorless Brushless Motor Drive
Figure A.1: DPFlex PCB dimensions
In addition to the clearance requirement on the edge of the PCB board, there is a minimum supporting
outer edge requirement that is necessary for proper mechanical support of the assembly. Failure to
include this edge may lead to additional stresses being placed on the PCB, which could cause
component failures.
A maximum of 0.635mm (0.025in) supporting edge must extend underneath the PCB starting from
the nominal board edge location. This edge must not extend any further under the PCB or risk of an
electrical short may occur, and minimum creepage and clearance specifications may be breached for
specified regulatory agencies. Please refer to Figure A.2 for details on edge dimensions and
tolerances. Note that the supporting edge requirement is optional for the two edges that are
perpendicular to the connector side edge of the PCB, so the use of an economical extrusion can be
used to decrease manufacturing costs if desired.
Allied Motion Technologies, Inc.
November 12, 2014
Version R1
www.alliedmotion.com
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