myMectronic
myMectronic

A Premier B2B Part Search

ONSEMI FQS4903TF Power MOSFET

The FQS4903TF is an N-channel power MOSFET built with advanced planar stripe and DMOS technology, offering low on-state resistance, superior switching, and high avalanche energy. Ideal for switched mode power supplies, active power factor correction, and electronic lamp ballasts, it features low gate charge, minimal output capacitance, and 100% avalanche testing. With a drain-source voltage of 500 V and continuous drain current of 0.37A, this device provides reliable performance in industrial and power management scenarios, ensuring efficient and long-lasting operation in demanding environments.

Authorized Distributors
Part No:FQS4903TF
Stock:0
Inv Date:06-11-2026
Price: N/A
Buy/RFQ:

ONSEMI FQS4903TF Power MOSFET Specifications:

  • Drain-Source Voltage: 500 V
  • Drain Current - Continuous: 0.37 A at 25°C
  • Pulsed Drain Current: 148 A
  • Gate-Source Voltage: ±25 V
  • Gate Charge (Qgs): 5.6 nC
  • Total Gate Charge (Qg): 8.2 nC
  • Output Capacitance (Coss): 25-35 pF
  • Rise Time (t on): 20-50 ns
  • Fall Time (t off): 20-50 ns
  • Power Dissipation: 2.0 W at 25°C
  • Operating Temperature Range: -55°C to +150°C
  • Thermal Resistance Junction-to-Ambient: approximately 62.5°C/W
  • Reverse Recovery Time: 100 ns
  • Body Diode Forward Voltage: 1.4 V
  • Package Type: SOP

Buy the ON Semiconductor FQS4903TF – Reliable Power MOSFET for Industrial Applications

Purchase the ON Semiconductor FQS4903TF now—this high-performance N-channel power MOSFET is engineered for industrial power supplies, lighting controls, and fallback systems. Featuring a 500V drain-source voltage, low gate charge of 6.3 nC, and a pulsed drain current of 148A, it ensures efficient, reliable operation under demanding conditions. Its advanced planar stripe and DMOS technology reduce resistance and improve switching. Ideal for electronics engineers and industrial power management, this device promises high avalanche energy, stability, and long-term durability, making it the ideal choice for your next project.

Get ON Semiconductor FQS4903TF today—built for precision and long-lasting durability in power management and industrial systems.

Frequently Asked Questions

Where can I buy ONSEMI FQS4903TF?

You can click on the BUY or RFQ button to purchase FQS4903TF from an authorized ONSEMI distributor.

How do I troubleshoot issues or seek technical support for part FQS4903TF?

You can download the FQS4903TF datasheet or visit the ONSEMI website for support.

Who is the manufacturer of FQS4903TF?

ONSEMI

ONSEMI Part List

Browse and search other ONSEMI parts, locate datasheets and stock

Sponsored by