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Transistors - FETs, MOSFETs - Single

Image Part Number Description / PDF Quantity Rfq
DMP21D6UFB4-7B

DMP21D6UFB4-7B

Zetex Semiconductors (Diodes Inc.)

MOSFET P-CH 20V 580MA 3DFN

998070000
ZVN4210A

ZVN4210A

Zetex Semiconductors (Diodes Inc.)

MOSFET N-CH 100V 450MA TO92-3

211860000
DMG3415U-7

DMG3415U-7

Zetex Semiconductors (Diodes Inc.)

MOSFET P-CH 20V 4A SOT23-3

0
DMN10H700S-13

DMN10H700S-13

Zetex Semiconductors (Diodes Inc.)

MOSFET N-CH 100V 700MA SOT23

0
DMTH43M8LPSQ-13

DMTH43M8LPSQ-13

Zetex Semiconductors (Diodes Inc.)

MOSFET N-CH 40V 22A PWRDI5060

1982
DMG2301U-7

DMG2301U-7

Zetex Semiconductors (Diodes Inc.)

MOSFET P-CH 20V 2.5A SOT23-3

705
DMT3003LFGQ-7

DMT3003LFGQ-7

Zetex Semiconductors (Diodes Inc.)

MOSFET N-CH 30V 22A PWRDI3333

4000
DMN2990UFZ-7B

DMN2990UFZ-7B

Zetex Semiconductors (Diodes Inc.)

MOSFET N-CH 20V 250MA 3DFN

806700000
2N7002T-7-F

2N7002T-7-F

Zetex Semiconductors (Diodes Inc.)

MOSFET N-CH 60V 115MA SOT-523

268183
ZXM62P02E6TA

ZXM62P02E6TA

Zetex Semiconductors (Diodes Inc.)

MOSFET P-CH 20V 2.3A SOT23-6

15859
DMN1019UVT-7

DMN1019UVT-7

Zetex Semiconductors (Diodes Inc.)

MOSFET N-CH 12V 10.7A TSOT26

48259
DMP3050LSS-13

DMP3050LSS-13

Zetex Semiconductors (Diodes Inc.)

MOSFET P-CH 30V 4.8A 8SO

70412500
DMTH8012LK3Q-13

DMTH8012LK3Q-13

Zetex Semiconductors (Diodes Inc.)

MOSFET N-CH 80V 50A TO252

75
DMN6040SFDEQ-13

DMN6040SFDEQ-13

Zetex Semiconductors (Diodes Inc.)

MOSFET N-CH 60V 5.3A 6UDFN

0
DMN3025LFG-13

DMN3025LFG-13

Zetex Semiconductors (Diodes Inc.)

MOSFET N-CH 30V 7.5A PWRDI3333-8

3000
DMN3053L-13

DMN3053L-13

Zetex Semiconductors (Diodes Inc.)

MOSFET N-CH 30V 4A SOT23

0
DMG1012TQ-7

DMG1012TQ-7

Zetex Semiconductors (Diodes Inc.)

MOSFET N-CH 20V 630MA SOT523

273015
DMS3014SFGQ-7

DMS3014SFGQ-7

Zetex Semiconductors (Diodes Inc.)

MOSFET N-CH 30V 9.5A PWRDI3333-8

0
DMG3406L-13

DMG3406L-13

Zetex Semiconductors (Diodes Inc.)

MOSFET N-CH 30V 3.6A SOT23

137623
DMT6016LPS-13

DMT6016LPS-13

Zetex Semiconductors (Diodes Inc.)

MOSFET N-CH 60V 10.6A PWRDI5060

18

Transistors - FETs, MOSFETs - Single

1. Overview

Field-Effect Transistors (FETs) and Metal-Oxide-Semiconductor FETs (MOSFETs) are voltage-controlled semiconductor devices that regulate current flow through an electric field. As fundamental components in modern electronics, they offer advantages such as high input impedance, low power consumption, and fast switching capabilities. Single discrete FETs/MOSFETs are widely used in power management, signal amplification, and switching applications across industries.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Junction FET (JFET)Voltage-controlled depletion mode operation, low noiseLow-noise amplifiers, analog switches
Enhancement Mode MOSFETNormally-off device, requires positive VGS to conductPower supplies, motor drives
Depletion Mode MOSFETNormally-on device, requires negative VGS to blockRadio frequency amplifiers, load switches
Insulated Gate Bipolar Transistor (IGBT)Combines MOSFET input with bipolar output, high current capacityHigh-power industrial equipment, electric vehicles

3. Structure and Composition

A typical MOSFET structure includes three terminals: Source, Gate, and Drain. The gate is insulated by a thin layer of silicon dioxide (SiO2), forming a capacitive control interface. The channel between source and drain is formed in a silicon substrate. Advanced devices use materials like silicon carbide (SiC) or gallium nitride (GaN) for higher performance. Packaging options include TO-220, DPAK, and SOT-23 for different thermal and space requirements.

4. Key Technical Specifications

ParameterDescription and Importance
VDS (Drain-Source Voltage)Maximum voltage rating between drain and source; determines breakdown tolerance
ID (Drain Current)Maximum continuous current capacity; critical for power handling
RDS(on)On-state resistance; impacts conduction losses and efficiency
VGS(th) (Threshold Voltage)Voltage required to form channel; determines control signal compatibility
QG (Gate Charge)Charge required for switching; affects switching speed and driver requirements
PD (Power Dissipation)Maximum power handling capability; dictates thermal management needs

5. Application Fields

  • Consumer Electronics: Mobile phone chargers, notebook power adapters
  • Industrial: Motor drives, uninterruptible power supplies (UPS)
  • Automotive: Electric vehicle (EV) battery management systems, HEV inverters
  • Telecommunications: Base station power amplifiers, optical network transceivers
  • Renewable Energy: Solar micro-inverters, wind turbine converters

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
Texas InstrumentsCSD18534Q5A60V, 4.2m RDS(on), automotive-grade
STMicroelectronicsSTP55NF0655A, 60V, high-speed switching
Infineon TechnologiesIPB041N06N30.41 , 600V, TO-220 package
ON SemiconductorNDS355ANDepletion mode, 300mA, RF applications

7. Selection Guidelines

Key considerations include:

  • Voltage and current requirements under operating conditions
  • Thermal performance (RDS(on), package thermal resistance)
  • Switching speed vs. conduction loss trade-off
  • Gate drive compatibility with control circuitry
  • Environmental factors (temperature, vibration, humidity)
  • Cost-performance balance for volume production

8. Industry Trends

Current trends include:

  • Adoption of wide bandgap materials (SiC, GaN) for higher efficiency
  • Advanced packaging technologies (double-sided cooling, copper clip)
  • Integration with gate drivers and protection circuits
  • Miniaturization through trench and shielded gate structures
  • Development of automotive-qualified devices for EVs and ADAS

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