BZX84-C12 – FAIRCHILD & NATIONAL SEMI

Overview

The FAIRCHILD & NATIONAL SEMI BZX84-C12 is a highly stable Zener diode designed for precise voltage regulation. Its critical operational characteristic lies in maintaining a nominal 12V output with a ±5% tolerance, crucial for sensitive analog circuitry. A key design consideration when utilizing this device is managing its total power dissipation of ≤250 mW; exceeding this limit, especially during transient events where it can handle ≤40 W non-repetitive peak reverse power, will lead to thermal runaway and device failure, necessitating careful heatsinking or current limiting in high-power applications.

Key Features

• Nominal Working Voltage (VZ): 12 V
• Tolerance: ±5%
• Maximum Continuous Forward Current (IF): 200 mA
• Total Power Dissipation (Ptot): ≤250 mW
• Non-Repetitive Peak Reverse Power Dissipation (PZSM): ≤40 W
• Package: SOT23 (2.9 x 1.3 x 1 mm)

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

• Precision voltage reference for low-power data acquisition systems.
• Overvoltage protection clamping for sensitive digital interfaces.
• Stable bias voltage generation for operational amplifiers in audio preamplifiers.
• Voltage regulation in portable battery-powered instrumentation.