BZT55A18-GS18

Single Zener Diodes Overview

The BZT55A18-GS18 is a single Zener diode manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 18 V with a tight tolerance of ±1%. The device is rated for a maximum power dissipation of 500 mW and exhibits a maximum dynamic impedance of 50 Ohms. Designed for surface-mount applications, it utilizes the SOD-80 QuadroMELF package. The component is RoHS compliant and lead-free.

Single Zener Diodes Feature Summary

• High voltage tolerance accuracy with ±1% specification
• Surface-mount compatible SOD-80 QuadroMELF packaging
• Lead-free and RoHS compliant construction

Single Zener Diodes Applications

• Voltage reference circuits requiring high precision
• Overvoltage protection in sensitive electronic systems
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify the specific suffix GS18 against the official Vishay datasheet to confirm package type and compliance status. Ensure the ±1% tolerance variant matches the design requirements, as other variants like GS08 may exist with different tolerances. Confirm active status and availability through authorized distributors, as stock levels fluctuate.

Single Zener Diodes Selection Notes

Select this component when precise voltage regulation is critical due to its ±1% tolerance. The 500 mW power rating suits low-power applications. The SOD-80 package offers compact footprint advantages for space-constrained designs. Compare against standard tolerance versions if cost sensitivity outweighs precision needs.

Single Zener Diodes Part Context

This part belongs to the BZT55 series of small-signal Zener diodes from Vishay. The series provides various voltage options in the SOD-80 package. The 'A' in the model number typically denotes the tighter ±1% tolerance class compared to the standard 'B' series.

Single Zener Diodes Replacement Considerations

Parametric equivalents such as BZT55B18-GS08 are available but feature ±2% tolerance instead of ±1%. Verify that the reduced precision meets circuit requirements before substitution.