1. Voltage Regulation Tolerance: BZX384 offers ±2%, while CMDZ5236 provides ±5%. The former delivers a more precise voltage reference, making it suitable for analog circuits or reference voltage sources with tighter voltage tolerance requirements. 2. Dynamic Impedance: CMDZ5236 has a Zzt of 6Ω (typical), which is superior to the 15Ω of BZX384. The lower impedance results in better voltage stability under varying load conditions, especially when operating close to the rated current. 3. Rated Power Dissipation: CMDZ5236 is rated at 250mW, 50mW higher than BZX384. This allows for higher operating current or better thermal margin under equivalent conditions, though the practical thermal limitations of the SOD-323 package must be considered. 4. Reverse Leakage Current Test Condition: BZX384 is tested at 1V, whereas CMDZ5236 is tested at 6V. The latter’s test voltage is closer to its nominal zener voltage, so its specified 3μA leakage current reflects performance under conditions more representative of actual operation. This may also indicate differing manufacturing process emphases on high-temperature leakage control. 5. Temperature Range: CMDZ5236 has a lower operating temperature limit of -65°C, compared to -55°C for BZX384, giving it a slight advantage in extreme low-temperature environments. 6. Manufacturer Process Differences: The Vishay series is typically optimized for general-purpose balance, while Central Semiconductor may have advantages in certain parameters (such as impedance), albeit with a relatively relaxed precision standard.