Silicon diodes which are designed for a specific reverse breakdown voltage, and are most often used in electronic power supply voltage regulators, are called __________.

In USCG Marine Electrical Systems (IEEE 45 and 46 CFR), regarding 'Silicon diodes which are designed for a specific reverse breakdown voltage, and are most often used in electronic power supply voltage regulators, are called', the compliant technical standard is: 'Zener diodes'.