SZMM3Z22VT1

Overview

The SZMM3Z22VT1G is a single Zener voltage regulator diode manufactured by onsemi, designed for surface-mount applications in the SOD-323 package. It features a nominal Zener voltage of 22 V with a tolerance of ±5% and a steady-state power dissipation rating of 300 mW. The device operates within a temperature range of -65°C to +150°C and exhibits a maximum reverse leakage current of 50 nA at the test current of 5 mA. It holds AEC-Q101 qualification and PPAP capability, indicating suitability for automotive environments. The component measures 1.7 mm in length, 1.25 mm in width, and has a low profile height of 0.9 mm.

Feature Summary

• Automotive-grade reliability with AEC-Q101 qualification and PPAP capability for unique site and control change requirements.
• Compact SOD-323 surface-mount package optimized for space-constrained high-density PCB designs.
• Low body height of 0.9 mm facilitates placement in devices where vertical space is limited.

Applications

• Voltage regulation and protection circuits in cellular phones.
• Protection stages in handheld portable electronic devices.
• Voltage reference applications in high-density PC boards.

Procurement Notes

Verify the part number suffix carefully, as the input model lacks the 'G' suffix typically denoting lead-free status in onsemi's MM3Z series. Confirm that the specific ordering code matches the required automotive qualification (AEC-Q101) and RoHS compliance specifications before procurement. Ensure the supplier provides documentation confirming the SZ prefix attributes regarding site and control changes.

Selection Notes

Select this component when a 22 V regulation point is required in a compact SMD form factor. The 300 mW power rating supports moderate current applications, while the wide operating temperature range ensures functionality in harsh environments. Consider the 55 Ohm impedance for dynamic load variations and verify that the 50 nA leakage current meets the circuit's standby power constraints.

Part Context

This device belongs to the MM3Z series of Zener voltage regulators from onsemi. The SZ prefix specifically indicates that the part meets automotive quality standards and requires unique site and control change management. It shares the same physical footprint and electrical characteristics as the standard MM3Z22VT1G but carries additional automotive certification requirements.

Replacement Considerations

The MM3Z22VT1G is a direct functional equivalent with identical electrical parameters and package dimensions. However, it lacks the explicit AEC-Q101 qualification and PPAP capability associated with the SZ prefix. Verify if the non-automotive grade suffices for the application environment and regulatory requirements.