This standard applies to two terminal or multiple terminal silicon avalanche breakdown diodes (ABD)@ which are one type of surge protective device component (SPDC). In this document@ these devices will be called ABDs. ABDs limit (clamp) transient voltages and divert transient currents. This standard contains terms@ symbols and definitions@ and provides test methods for verifying ratings and measuring device characteristics. Service conditions and failure mode are also provided. This standard may also apply to other silicon surge protective device components with similar V-I characteristics.