2CW028XXXYQ-PX series are low-power zener diode chips for glass seal that fabricated in silicon epitaxial planar technology.
The series is asymmetrical regulator voltage chips, that is the upper limit and lower limit is asymmetrical, e.g. Vz=3.0V chips: the upper limit is 3.25V, the lower limit Is 2.95V ,the specification design is better suitable for user’s using habit
For user convenient choice regulator voltage in narrow limit. The series divided into 4 types in given regulator voltage and named PA, PB, PC and PD.
The chip thickness is 120mm. The top electrode material is Ag bump, and the backside electrode material is Ag.
Chip size: 0.28 X 0.28 (mm)2.