HF - Ferrite beds - High frequency suppression - CAN/ RS485/ USB/ Ethernet
TVS - voltage suppression, CAN/ RS485/ USB/ Ethernet
Use ESD if the human body can contact your device metal parts
MOV - Power IN
Fuses - Power IN
Self-resetting fuses - Power IN
Resistors - current limiting for ADC inputs / Digital inputs
Use output current limiting for digital outputs -
Current limter resistor + NPN
Shunt based precision current limiter
I2C Isolators - ADC chips / Sensors / 4-20mA applications
Digital Isolators - Communication, Digital I/O
Optocpoler Isolators - Digital I/O
Voltage clamping zener diodes - Digital I/O, CAN/ RS485/ USB/ Ethernet
Reverse polarity protection power input- PNP, NPN transistor
Schottky Diodes - low forward bias voltage for battery input connector / USB
Rivers protection for battery input
Using P channel MOSFET
Using N channel MOSFET
Using Schottky diode
Using controller IC
Isolated transformer-based design for power supply
Use shunt based current sensing mechanism if needed
Usee Digital Isolators for Communication buses- CAN/ RS485/ USB/ Ethernet
Use relay-based circuits for High inrush current protection
Use earthing techniques
Use waterproof enclosures
Use waterproof connectors
Use heat sink
Use cooling FAN
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