The 1N4099UR-1 through 1N4135UR-1 and 1N4614UR-1 through 1N4627UR-1 series are 500 mW, Zener voltage regulators in the axial-leaded, glass DO-213AA package. Voltages from 1.8 to 100V in 5%, 2%, and 1% tolerances are available. They are constructed with an internal metallurgical bond and are mil-qualified up to the JANS level for high reliability applications.