21N50ES

Product Overview

21N50ES is commonly associated with Fuji Electric FMH21N50ES, FMR21N50ES and FMV21N50ES Super FAP-E3 series N-channel silicon power MOSFETs. The device is designed for high-voltage switching applications and provides low power loss, low noise, low on-resistance, controllable switching dv/dt and reduced gate-source ringing behavior. With a 500V drain-source voltage rating and 21A current class, it is suitable for switching regulators, AC/DC power supplies, DC-DC converters, UPS systems, industrial power boards and maintenance or replacement projects.

Key Features

• Manufacturer: Fuji Electric

• Marking / Short Part Number: 21N50ES

• Related Part Numbers: FMH21N50ES, FMR21N50ES, FMV21N50ES

• Device Type: N-channel silicon power MOSFET

• Product Category: Discrete semiconductor / high-voltage MOSFET

• Series: Super FAP-E3 series

• Drain-Source Voltage: 500V

• Continuous Drain Current: 21A class

• Gate-Source Voltage: ±30V maximum class

• Power Dissipation: 285W class for FMH21N50ES version; package-dependent

• Output Capacitance: 320pF class

• Package Options: TO-3P, TO-220F and related Fuji power packages depending on full ordering code

• Mounting Type: Through-hole mounting

• Key Features: Low power loss, low noise, low on-resistance, controllable switching dv/dt and smaller gate-source ringing waveform

• Typical Use: Switching regulators, UPS systems, DC-DC converters, AC/DC power supplies and high-voltage power switching circuits

• Ordering / Packaging Note: 21N50ES may be used as a short reference or top marking for different Fuji Electric package versions; buyers should verify the full ordering code, package, pin configuration, marking and thermal rating before production use.

Applications

21N50ES can be used in electronic circuits that require high-voltage N-channel MOSFET switching performance. Typical applications include switching regulators, AC/DC switching power supplies, DC-DC converter stages, UPS power circuits, industrial control equipment, inverter auxiliary power stages, communication equipment power supplies, maintenance projects and repair applications. It is also suitable for BOM review where a 500V / 21A N-channel MOSFET in a Fuji Super FAP-E3 package option is required.

Quality & Sourcing

Antrex Electronics can support 21N50ES sourcing with stock availability checks, RFQ quotation, package confirmation, date code review and shipment arrangement. For project-based purchasing, buyers can provide quantity, target price, required date code, packaging requirements and application information for faster quotation support.

For quality control, Antrex Electronics can help arrange product photos, label review, visual inspection and third-party testing support when required. OEMs, EMS providers, repair centers and electronic component buyers are welcome to send BOM lists or hard-to-find part requests for sourcing assistance.