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4 Application Use
4.1 Dimensions and mounting
The mounting holes and slots for access to the Raspberry Pi camera and display interfaces are
according to the Raspberry Pi HAT specification.
The four 2.8mm mounting hole location dimensions are shown in the diagram below.
The 9-way D-Sub connector PL1 size dimensions are 30.84 x 12.55mm.
This connector is centered at 13.017, 15.557 (mm) relative to the origin at the lower left of the diagram.
Figure 12 - PCB Dimensions
4.1.1 Isolation Barrier
There is an isolation boundary between the CAN Termination Network/Transceiver group and the rest of
the components connected to the Raspberry Pi such as the RTC. This isolation boundary has 5mm of
creepage and clearance. Only the CAN Transceiver IC1 (ISO1050) and the DC to DC converter DC1
bridge this isolation barrier. The limitation of the isolation is the characteristics of these two devices.
In production the board is insulation tested at 500V.
If the CAN Interface HAT is fitted to a Raspberry Pi with a Camera FPC cable fitted (routed through the
oblong slot) then the isolation boundary will be reduced. If the clearance is not to be limited then suitably
rated insulation material will need to be applied around the cable routed to the camera FPC connector.
01/06/2018
Document Number
IEMAN000001
Document Title
CAN Interface pHAT User Manual
17 of 22
Document Revision
Page
R003
17 of 22
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