BZT55C20

Single Zener Diodes Overview

The BZT55C20 is a small signal Zener diode manufactured by Taiwan Semiconductor, designed for surface mount applications. It features a nominal Zener voltage of 20 V with a tolerance of 5%. The device operates within a power dissipation rating of 500 mW and maintains a maximum reverse leakage current of 100 nA at the test current of 5 mA. Its dynamic impedance is specified at 55 Ohms. The component supports an operating temperature range from -65 C to +175 C and utilizes the LL-34-2 package.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation with tight 5% tolerance for precision circuit requirements
• Hermetically sealed glass construction ensures high reliability and corrosion resistance
• Supports high-temperature soldering processes up to 270 degrees Celsius

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection in sensitive electronic systems
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify the specific suffix designation (e.g., L0 or L1) during procurement, as manufacturers may update part numbers without changing functionality. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability varies by region. Ensure the ordering quantity matches the required packaging format, such as cut tape or reel, to align with assembly line specifications.

Single Zener Diodes Selection Notes

Select this component when a 20 V regulation point is required in a compact surface mount footprint. The 500 mW power rating suits low-current applications where thermal management is limited. Consider the 55 Ohm dynamic impedance for noise-sensitive designs. Verify that the LL-34-2 package dimensions fit the PCB layout constraints compared to through-hole alternatives.

Single Zener Diodes Part Context

This device belongs to the BZT55C series of small signal Zener diodes from Taiwan Semiconductor. The series offers a wide selection of voltages ranging from 2.4 V to 75 V. All variants share the same Quadro Mini-MELF package and mechanical characteristics, differing primarily in their breakdown voltage and tolerance specifications.

Single Zener Diodes Replacement Considerations

Cross-reference with Vishay BZT55C20 for equivalent electrical performance. Verify pinout compatibility and package dimensions before substitution. Check if alternative suppliers offer matching tolerance and power ratings.