SZ1SMA5915BT3G

Single Zener Diodes Overview

The SZ1SMA5915BT3G is a 1.5 W surface-mount Zener voltage regulator from the 1SMA59xxBT3G series, housed in an SMA (CASE 403D) package. It features a nominal Zener voltage of 3.9 V with a ±5% tolerance and a maximum dynamic impedance of 7.5 Ω at a test current of 96.1 mA. The device supports a DC power dissipation of 1.5 W at 75°C lead temperature and operates within a junction temperature range of -65°C to +150°C. It is AEC-Q101 qualified and PPAP capable.

Single Zener Diodes Feature Summary

• AEC-Q101 qualified for automotive applications with PPAP capability
• Low profile plastic package designed for top slide or bottom circuit board mounting
• ESD rating of Class 3 (> 16 kV) per Human Body Model
• Flat handling surface facilitates accurate placement during assembly

Single Zener Diodes Applications

• Voltage regulation in automotive electronic systems
• Protection circuits requiring high ESD immunity
• Replacement for MELF packages in surface mount designs

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the specific requirement for automotive qualification and PPAP capability. Confirm the package type is SMA (CASE 403D) and ensure the device code corresponds to the 3.9 V specification. Check for RoHS compliance and Pb-Free status as indicated by the G suffix and marking codes.

Single Zener Diodes Selection Notes

Select this component when a 3.9 V reference is needed in a compact SMA footprint with automotive reliability standards. Consider the 1.5 W power dissipation limit and thermal resistance values for heat management. Ensure the operating environment stays within the specified -65°C to +150°C temperature range for optimal performance.

Single Zener Diodes Part Context

This part belongs to the 1SMA59xxBT3G and SZ1SMA59xxBT3G series of 1.5 Watt Zener Diodes. The series covers a standard breakdown voltage range from 3.3 V to 68 V. The SZ prefix denotes devices intended for automotive and other applications requiring unique site and control change requirements.

Single Zener Diodes Replacement Considerations

The datasheet identifies these devices as ideal replacements for MELF packages. No specific substitute part numbers are provided in the source material.