SZMMBZ5245BLT3G

Single Zener Diodes Overview

The SZMMBZ5245BLT3G is a single Zener voltage regulator diode from the SZMMBZ52xxBLT1G series, manufactured by onsemi. It features a nominal Zener voltage of 15 V with a tolerance of ±5%. The device operates within a junction temperature range of -65°C to +150°C and has a maximum power dissipation of 225 mW on an FR-5 board at 25°C ambient temperature. Packaged in a surface-mount SOT-23 (CASE 318) housing, it exhibits a maximum Zener impedance of 16 Ohms at the test current of 8.5 mA and a reverse leakage current of 100 nA at 11 V. This component is AEC-Q101 qualified and PPAP capable.

Single Zener Diodes Feature Summary

• SZ prefix indicates qualification for automotive applications requiring unique site and control change requirements, meeting AEC-Q101 standards.
• Designed for optimal automated board assembly with a small SOT-23 package size suitable for high-density applications.
• Provides electrostatic discharge protection rated at Class 3 (>16 kV) per the Human Body Model.

Single Zener Diodes Applications

• Cellular phones
• Handheld portable devices
• High density PC boards

Single Zener Diodes Procurement Notes

Verify that the ordering suffix 'LT3G' corresponds to the specific tape and reel packaging quantity of 10,000 units as defined in the manufacturer's documentation. Confirm that the 'SZ' prefix is required for projects necessitating AEC-Q101 qualification and PPAP capability, as this distinguishes it from standard commercial grade variants within the same electrical specification family.

Single Zener Diodes Selection Notes

Select this component when a precise 15 V regulation point is required in space-constrained designs utilizing surface mount technology. Ensure the application circuit can support the 8.5 mA test current to maintain the specified impedance characteristics. Consider the thermal derating curve if the operating ambient temperature exceeds 25°C to prevent exceeding the 225 mW power dissipation limit.

Single Zener Diodes Part Context

This part belongs to the MMBZ52xxBLT1G/SZMMBZ52xxBLT1G series of 225 mW Zener diodes offered in the SOT-23 package. The series covers a wide Zener voltage range from 2.4 V to 91 V. The SZ variant specifically targets automotive and other applications demanding rigorous quality control and site-specific manufacturing protocols compared to the standard commercial MMBZ series.

Single Zener Diodes Replacement Considerations

Direct functional equivalents within the same series include MMBZ5245BLT3G or MMBZ5245BLT1G, provided automotive qualification (SZ prefix) is not mandatory. For identical automotive-grade specifications, verify availability of other SZMMBZ5245BLT*G variants with matching packaging configurations.