Got it—let’s place the power block in the top‑left. Here’s how to move/rotate parts in Flux:
“This is what the Flux documentation says about positioning:
‘To move a component, left-click on it and drag it to the desired position. For rotating a part, there are two options:
Right-click on the part you want to rotate and select "Rotate right" or "Rotate left."
To rotate parts quickly, use the open or close square brackets [ ]’
Note: moving or rotating a component creates an Object-Specific Layout Rule you can edit.”
Source
What to place in the top-left power zone (in this order from the CAN1 connector inward)
At connector power/ground: place J1 (reference), then put F1 in series on Pin‑9 (+12 V) as the first element, with D2 (TVS) very close to the connector’s power/ground for a short, direct return.
After the fuse: place D1 (reverse‑polarity protection) on the 12 V path feeding the buck input.
Buck cluster: place U3 compactly with its input/output capacitors C1, C3, C4, C5 tight to the appropriate pins per the datasheet; keep the high‑di/dt loop as small as possible.
LDO zone: place U4 a bit inboard, with its decoupling C2 right at VOUT/GND, feeding your 3.3 V loads.
Keep this entire power area separated from CAN pairs and their return paths; do not route the switcher’s SW/return under the CAN sections.
If you want, I can review placement once you’ve dragged these parts into the top‑left zone.
Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
General Purpose Thick Film Standard Power
and High-Power Chip Resistor
47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film
Features:
- RMCF – standard power ratings
- RMCP – high power ratings
- Nickel barrier terminations standard
- Power derating from 100% at 70ºC to zero at +155ºC
- RoHS compliant, REACH compliant, and halogen free
- AEC-Q200 compliant
Teensy 4.0 Dual CAN-FD Gateway with Switchable Bus Termination
Properties
Reverse Polarity, TVS, Fuse
No remaining violations
75.326
mm
Teensy 4.0
715.4
mm
Hole5 is visible in the PCB layout and meets M5 NPTH design specifications
-59.338
mm
154.75mm x 94.78mm
-955.1
mm
10.00mm, 10.00mm from board origin
154.75
94.78
12
V
Teensy 4.0 Dual CAN-FD Gateway with: 12V DC input, reverse-polarity protection, TVS, fuse, buck to 5V, 3.3V LDO supply, two CAN-FD transceivers with DB9 connectors, and status LEDs.
CAN-FD
Automotive
true
No remaining violations
Pricing & Availability
Distributor
Qty 1
Arrow
$28.57–$31.64
Digi-Key
$42.10–$47.64
LCSC
$48.90–$49.35
Mouser
$46.63
TME
$4.62
Verical
$51.37–$58.59
Controls
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