INDUSTRY COMPONENT

Power MOSFET

Power MOSFET is a voltage-controlled semiconductor switch used for efficient power conversion and switching in electronic circuits.

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Component Specifications

Definition
A Power Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) is a type of field-effect transistor designed to handle significant power levels. It operates as a voltage-controlled switch, where a voltage applied to the gate terminal controls the flow of current between the drain and source terminals. In High-Efficiency LED Driver Modules, it enables precise pulse-width modulation (PWM) for regulating current to LEDs, minimizing energy loss as heat through low on-resistance (Rds(on)) and fast switching speeds.
Working Principle
The Power MOSFET works by applying a voltage to the gate terminal, which creates an electric field that forms a conductive channel between the drain and source. This allows current to flow when the gate voltage exceeds a threshold (Vgs(th)). It operates in enhancement mode, meaning it is normally off (non-conductive) without gate voltage. In LED drivers, it switches on and off rapidly to control average current through PWM, ensuring stable LED brightness and efficiency.
Materials
Silicon (Si) or Silicon Carbide (SiC) semiconductor wafer, with aluminum or copper metallization for terminals, encapsulated in epoxy or plastic packaging (e.g., TO-220, D2PAK).
Technical Parameters
  • Package Type TO-220, D2PAK, SO-8
  • Switching Speed Nanoseconds range
  • Current Rating (Id) Up to 50A
  • Voltage Rating (Vds) Up to 600V
  • On-Resistance (Rds(on)) As low as 10mΩ
  • Gate Threshold Voltage (Vgs(th)) 2-4V
Standards
ISO 9001, IEC 60747-8

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Power MOSFET.

Power MOSFET LED driver semiconductor switch voltage-controlled high efficiency PWM control power electronics industrial components Power MOSFET in Electrical Equipment Manufacturing

Parent Products

This component is used in the following industrial products

High-Efficiency LED Driver Module

Electronic power supply component converting AC to DC for LED lighting systems.

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Computer Power Supply Unit (PSU) Voltage Regulator Module

Electronic component that stabilizes and regulates DC voltage outputs within a computer power supply.

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Driver Circuit

Electronic circuit that regulates power and controls current to LEDs in an illumination array.

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Engineering Analysis

Risks & Mitigation
  • Thermal runaway due to overheating
  • Gate oxide damage from electrostatic discharge (ESD)
  • Switching losses at high frequencies
FMEA Triads
Trigger: Excessive gate voltage or ESD
Failure: Gate oxide breakdown, leading to short circuit or permanent damage
Mitigation: Use ESD protection circuits, adhere to voltage limits, and implement proper handling procedures.
Trigger: Inadequate heat dissipation
Failure: Overheating and thermal shutdown, reducing efficiency or causing failure
Mitigation: Design with heatsinks, ensure proper airflow, and monitor temperature in the LED driver module.

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±5% for electrical parameters under specified conditions
Test Method
Dynamic and static testing per IEC 60747-8, including Vds, Id, Rds(on), and switching characteristics measurement.

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

Why use a Power MOSFET in LED drivers?

Power MOSFETs offer fast switching, low on-resistance, and precise control via PWM, making them ideal for regulating current in LED drivers to maximize efficiency and lifespan.

How does gate voltage affect MOSFET operation?

A sufficient gate voltage (above Vgs(th)) turns the MOSFET on, allowing current flow. Below this threshold, it remains off, enabling digital control with minimal power loss.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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