MMSZ5230BT3

Single Zener Diodes Overview

The onsemi MMSZ5230BT3 is a single-channel Zener voltage regulator diode housed in an SOD-123 surface-mount package. It provides a nominal reverse Zener voltage of 4.7 V with a ±5% tolerance, measured at a test current of 20 mA. The device supports a maximum power dissipation of 500 mW and exhibits a maximum Zener impedance of 19 Ω at the test current. Operating characteristics include a maximum reverse leakage current of 5 μA at 2.5 V and a forward voltage of 0.9 V maximum at 10 mA. The component functions within a junction and storage temperature range of -55°C to +150°C.

Single Zener Diodes Feature Summary

• Designed for optimal automated board assembly using a compact SOD-123 plastic case.
• Provides general-purpose voltage regulation suitable for medium current applications.
• Features high electrostatic discharge protection rated at Class 3 per the Human Body Model.

Single Zener Diodes Applications

• Voltage reference circuits
• General purpose voltage regulation
• High density printed circuit boards

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required tape and reel quantity. Confirm compliance with RoHS directives and lead-free status requirements. Ensure the selected variant aligns with automotive or industrial site control needs if applicable. Validate thermal equilibrium measurement conditions against system design parameters before finalizing procurement specifications.

Single Zener Diodes Selection Notes

Select this component when a 4.7 V regulation point is required in a space-constrained surface-mount layout. Consider the 500 mW power rating and thermal resistance values for heat dissipation calculations. Evaluate the 19 Ω dynamic impedance against signal integrity requirements. Verify that the operating temperature range meets environmental constraints.

Single Zener Diodes Part Context

This device belongs to the MMSZ52xxxT1G series of Zener voltage regulators manufactured by onsemi. The series utilizes a void-free, transfer-molded thermosetting plastic case designed for corrosion resistance and solderability. The product line offers a wide range of Zener voltages from 2.4 V to 110 V within the same physical footprint.

Single Zener Diodes Replacement Considerations

Cross-reference with MMSZ5230BT1G for identical electrical specifications but different standard packaging quantities. Verify pinout compatibility and thermal performance metrics before substituting components from other manufacturers.

Single Zener Diodes FAQ

What is the maximum Zener impedance specified for this device?

The maximum Zener impedance (ZZT) is 19 Ω, measured at a test current of 20 mA.

How is the nominal Zener voltage determined?

The nominal Zener voltage is measured with the device junction in thermal equilibrium at a lead temperature of 30°C ±1°C.