Transistors - FETs, MOSFETs

Transistors - FETs, MOSFETs - Single

Part Number	Description / PDF	Quantity
PSMN7R0-100PS,127 Nexperia	MOSFET N-CH 100V 100A TO220AB	4890
PMPB10XNE,115 Nexperia	MOSFET N-CH 20V 9A DFN2020MD-6	0
PSMN2R0-30YL,115 Nexperia	MOSFET N-CH 30V 100A LFPAK56	4203
PMXB40UNEZ Nexperia	MOSFET N-CH 12V 3.2A DFN1010D-3	528
PMN55ENEX Nexperia	MOSFET N-CH 60V 4.5A 6TSOP	2528
BUK663R5-55C,118 Nexperia	PFET, 120A I(D), 55V, 0.005OHM,	1589
BUK9207-30B,118 Nexperia	MOSFET N-CH 30V 75A DPAK	3426
BST82,215 Nexperia	MOSFET N-CH 100V 190MA TO236AB	20764
PSMN014-80YLX Nexperia	PSMN014-80YL - N-CHANNEL 80V, 14	3399
BUK9M85-60EX Nexperia	MOSFET N-CH 60V 12.8A LFPAK33	0
BUK7M5R0-40HX Nexperia	MOSFET N-CH 40V 85A LFPAK33	1500
BUK9Y27-40B,115 Nexperia	MOSFET N-CH 40V 34A LFPAK56	986
PMZB600UNEYL Nexperia	MOSFET N-CH 20V 600MA DFN1006B-3	1921
NX7002BKSX Nexperia	MOSFET N-CH 60V 270MA 6TSSOP	390
BUK9675-100A,118 Nexperia	23A, 100V, 0.084OHM, N-CHANNEL M	22100
PSMN1R2-25YLDX Nexperia	MOSFET N-CH 25V 100A LFPAK56	272
BUK7611-55B,118 Nexperia	MOSFET N-CH 55V 75A D2PAK	720
PH7030AL,115 Nexperia	MOSFET N-CH 30V 76A LFPAK56	45000
BUK7Y2R0-40HX Nexperia	MOSFET N-CH 40V 120A LFPAK56	0
BUK6Y19-30PX Nexperia	MOSFET P-CH 30V 45A LFPAK56	204

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

Type	Functional Characteristics	Application Examples
Junction FET (JFET)	Voltage-controlled depletion mode operation, low noise	Low-noise amplifiers, analog switches
Enhancement Mode MOSFET	Normally-off device, requires positive V_GS to conduct	Power supplies, motor drives
Depletion Mode MOSFET	Normally-on device, requires negative V_GS to block	Radio frequency amplifiers, load switches
Insulated Gate Bipolar Transistor (IGBT)	Combines MOSFET input with bipolar output, high current capacity	High-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

Parameter	Description and Importance
V_DS (Drain-Source Voltage)	Maximum voltage rating between drain and source; determines breakdown tolerance
I_D (Drain Current)	Maximum continuous current capacity; critical for power handling
R_DS(on)	On-state resistance; impacts conduction losses and efficiency
V_GS(th) (Threshold Voltage)	Voltage required to form channel; determines control signal compatibility
Q_G (Gate Charge)	Charge required for switching; affects switching speed and driver requirements
P_D (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

Manufacturer	Representative Product	Key Features
Texas Instruments	CSD18534Q5A	60V, 4.2m R_DS(on), automotive-grade
STMicroelectronics	STP55NF06	55A, 60V, high-speed switching
Infineon Technologies	IPB041N06N3	0.41 , 600V, TO-220 package
ON Semiconductor	NDS355AN	Depletion mode, 300mA, RF applications

7. Selection Guidelines

Key considerations include:

Voltage and current requirements under operating conditions
Thermal performance (R_DS(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