STD3NK50Z-1

Single FETs, MOSFETs Overview

The STD3NK50Z-1 is a Zener-protected N-channel Power MOSFET from the SuperMESH series, manufactured by STMicroelectronics. It features a 500 V drain-source voltage rating and a maximum continuous drain current of 2.3 A at 25°C case temperature. The device utilizes an IPAK (TO-251) package with three pins. Key electrical parameters include a typical on-resistance of 3.3 Ω at VGS = 10 V and ID = 1.15 A, and a gate threshold voltage ranging from 3 V to 4.5 V. Total gate charge is typically 15 nC at VGS = 10 V. The component supports a peak diode recovery voltage slope of 4.5 V/ns and includes integrated back-to-back Zener diodes for enhanced ESD protection.

Single FETs, MOSFETs Feature Summary

• SuperMESH technology optimization providing extremely high dv/dt capability and minimized gate charge.
• Integrated back-to-back Zener diodes between gate and source for enhanced ESD protection and transient absorption.
• 100% avalanche tested for reliability in demanding applications.

Single FETs, MOSFETs Applications

• AC Adaptors
• Battery Chargers
• Switch Mode Power Supplies (SMPS)
• Lighting

Single FETs, MOSFETs Procurement Notes

Verify the specific ordering suffix '-1' corresponds to the IPAK tube packaging configuration as defined in the datasheet order code table. Confirm that the required current handling aligns with the 2.3 A continuous rating at 25°C case temperature. Ensure thermal management strategies account for the junction-to-ambient resistance characteristics specified for the IPAK package type during operation.

Single FETs, MOSFETs Selection Notes

Select this component for high-voltage switching applications requiring robust dv/dt performance and internal gate protection. The IPAK package offers a surface-mount alternative to through-hole options while maintaining thermal efficiency. Consider the 3.3 Ω on-resistance when calculating conduction losses at the intended operating current levels. Verify compatibility with drive voltages given the 3 V to 4.5 V threshold range.

Single FETs, MOSFETs Part Context

This part belongs to the SuperMESH series, which represents an extreme optimization of ST's strip-based PowerMESH layout. The series complements ST's full range of high-voltage MOSFETs, including MDmesh products, by significantly reducing on-resistance while ensuring high dv/dt capability for demanding applications.

Single FETs, MOSFETs Replacement Considerations

The datasheet lists STD3NK50Z as a variant within the same family, differing primarily in packaging (DPAK tape & reel vs. IPAK tube). No other direct substitute part numbers are explicitly confirmed in the provided documentation.