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Littelfuse AXGD
Xtreme-Guard
™
Automotive
Suppressors
Littelfuse AQx
AEC-Q101 TVS
Diode Arrays
Designers should be aware of the ISO standards with
which vehicle electronic systems must comply. The most
important of them include:
• Standard ISO7637-2: Defines requirements for
protection from conducted electrical transients;
• Standard ISO16750-2: Describes environmental
stresses that automotive electrical and electronic
systems must withstand; and
• Standard ISO 10605:2008: Defines the ESD
conditions that automotive electronics must
withstand.
Familiarity with these standards helps design engineers
avoid expensive and time-consuming redesigns.
The automotive industry has defined a qualification
system for components that can be used in automotive
electronic circuits. The components that pass a set of
defined mechanical, electrical, and environmental stress
tests, including operation over a wide temperature range,
can be designated as AEC-Q (Automotive Electronics
Council-Quality). The tests have several Q values,
including AEC-Q100, AEC-Q101, and AEC-Q200.
This qualification system determines which tests must
take place. The use of AEC-Q-qualified components
can enable a faster approval process for automotive
electronic circuitry.
Conclusion
Robust, reliable vehicle electronic systems will help
make autonomous vehicles fixtures on the road.
Designers can substantially reduce the risk of circuit
failures by providing over-current protection, transient
surge protection, ESD protection, and reverse polarity
protection. ■
