BZX55A12-TAP

Single Zener Diodes Overview

The BZX55A12-TAP is a silicon epitaxial planar Zener diode from the Vishay BZX55 series, housed in a DO-35 glass axial package. It provides a nominal Zener voltage of 12 V with a tight tolerance of ±1%. The device operates at a test current of 5 mA and dissipates up to 500 mW. Key electrical characteristics include a maximum differential impedance of 20 Ohms, a forward voltage of 1.5 V at 200 mA, and a reverse leakage current below 0.1 µA at 9.1 V.

Single Zener Diodes Feature Summary

• Very sharp reverse characteristic for precise regulation
• Low reverse current level ensuring minimal leakage
• Very high stability under varying conditions
• Low noise performance suitable for sensitive circuits

Single Zener Diodes Applications

• Voltage stabilization
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific 'A' suffix indicates the ±1% tolerance variant distinct from standard 'C' or 'F' grades. Confirm the '-TAP' suffix corresponds to the Ammopack packaging format containing 10,000 units per box. Ensure compliance with RoHS directives and check for AEC-Q101 automotive qualification if required for the target application environment.

Single Zener Diodes Selection Notes

Select this component when tight voltage accuracy is critical, as the 'A' grade offers superior tolerance compared to standard options. Consider the DO-35 through-hole package for manual assembly or legacy board designs. Evaluate the thermal resistance requirements based on lead length and ambient temperature to ensure power dissipation limits are not exceeded during operation.

Single Zener Diodes Part Context

This part belongs to the BZX55 series of silicon epitaxial planar Zener diodes manufactured by Vishay Semiconductors. The series utilizes a standard glass case (DO-35) and is designed for general-purpose voltage regulation applications. The 'A' designation specifically denotes the tighter manufacturing tolerance tier within the product family.

Single Zener Diodes Replacement Considerations

Compatible substitutes include other manufacturers' DO-35 Zener diodes with 12 V nominal voltage and ±1% tolerance. Verify that replacement parts meet the same 500 mW power dissipation rating and operate within the -65°C to +175°C junction temperature range.