1PGSMB5938H

Single Zener Diodes Overview

The 1PGSMB5938H is a single Zener diode manufactured by Taiwan Semiconductor Corporation, housed in the DO-214AA (SMB) surface-mount package. It belongs to the automotive-grade 1PGSMB59 series and holds AEC-Q101 qualification. The device features a nominal Zener voltage of 36 V with a tolerance of ±5%. Rated for a maximum power dissipation of 3 W, it operates within a junction temperature range of -55 °C to +175 °C. Key electrical parameters include a maximum reverse leakage current of 1 µA at the rated voltage and a maximum Zener impedance of 27.4 Ω.

Single Zener Diodes Feature Summary

• Automotive-grade reliability certified under AEC-Q101 standards
• High thermal stability supporting operation up to 175 °C junction temperature
• Robust 3 W power dissipation capability in compact SMB packaging

Single Zener Diodes Applications

• Switching mode power supplies (SMPS)
• Board DC/DC converters
• Voltage regulation circuits

Single Zener Diodes Procurement Notes

Verify the component's authenticity against official Taiwan Semiconductor documentation. Confirm that the specific suffix 'HR5G' or similar indicates the correct tape-and-reel configuration if required for automated assembly. Ensure the procurement source provides valid traceability records consistent with automotive supply chain requirements.

Single Zener Diodes Selection Notes

Select this component when a 36 V reference is required in high-power applications. The DO-214AA package offers superior thermal performance compared to smaller SMD packages. Its AEC-Q101 qualification makes it suitable for environments demanding extended temperature ranges and long-term reliability beyond standard industrial specifications.

Single Zener Diodes Part Context

This part is a member of the 1PGSMB59xxH series, which provides a wide range of Zener voltages from 2.4 V to 200 V. All devices in this family share the same physical footprint and thermal characteristics, allowing for design flexibility while maintaining consistent board layout constraints across different voltage requirements.

Single Zener Diodes Replacement Considerations

Officially documented substitutes include the 1PGSMB5938H variant from other manufacturers or equivalent parts such as the 1SMA5955. Verify pinout compatibility and ensure the replacement meets the same AEC-Q101 automotive grade requirements.