MMSZ5243BT1

Single Zener Diodes Overview

The MMSZ5243BT1G is a single Zener voltage regulator diode manufactured by onsemi, housed in an SOD-123 surface-mount package. It provides a nominal reverse Zener voltage of 13 V with a ±5% tolerance and a steady-state power dissipation rating of 500 mW. The device operates within a junction temperature range of -55°C to +150°C and features a maximum Zener impedance of 13 Ω at a test current of 9.5 mA.

Single Zener Diodes Feature Summary

• Designed for high-density applications with a small plastic SOD-123 case suitable for automated board assembly.
• Offers robust electrostatic discharge protection rated at Class 3 (> 16 kV) per the Human Body Model.
• SZ prefix variants are qualified under AEC-Q101 standards and are Process Part Approval Plan capable.

Single Zener Diodes Applications

• Voltage regulation circuits requiring medium current handling.
• General-purpose electronic systems utilizing surface-mount technology.
• Automotive electronics meeting specific site and control change requirements.

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required packaging format, as T1G indicates tape and reel quantities while other suffixes may differ. Confirm whether the SZ prefix is necessary for automotive qualification or specific manufacturing site controls. Ensure compliance with RoHS directives, as indicated by the Pb-Free designation in the datasheet documentation.

Single Zener Diodes Selection Notes

Select this component when a 13 V reference point is needed in a compact footprint. The 500 mW power rating supports moderate current loads without excessive thermal management. Consider the SOD-123 dimensions if space constraints preclude larger leadless packages. Verify that the 13 Ω dynamic impedance meets the circuit's ripple rejection requirements.

Single Zener Diodes Part Context

This part belongs to the MMSZ52xxxT1G series of Zener diodes, which covers a wide voltage range from 2.4 V to 110 V. All devices in this family share the same SOD-123 mechanical outline and general thermal characteristics, differing primarily in their breakdown voltage specifications and corresponding test currents.

Single Zener Diodes Replacement Considerations

Cross-reference with MMSZ5243B or SZMMSZ5243BG for equivalent electrical performance. Verify that any substitute maintains the SOD-123 footprint and 500 mW power dissipation capability. Ensure the replacement device offers comparable ESD ratings and thermal resistance values.