Active filters amplify desired signals while rejecting unwanted frequencies, and can be tailored to meet application-specific requirements in electronics.
Amplifiers boost signal strength, match impedance levels, and are essential in many circuit systems, including audio, broadcasting, and telecommunications.
Batteries store and provide electrical energy, come in various types and sizes for multiple uses, rechargeable or single-use.
Capacitors store electrical charge with metallic plates and a dielectric; types vary and can be combined for specific circuit characteristics.
Chip carriers and sockets provide an interface between components and PCBs, enabling easy replacement or upgrading without soldering.
Circuit protection devices prevent damage from overcurrent flow, including fuses, breakers, surge protectors, and voltage regulators.
Connector accessories and support devices aid connector function and longevity, including backshells, grips, clamps, and ties; must be compatible with connector type.
Connectors join electronic circuits to transfer signals and power, come in various sizes and shapes, and include support accessories.
Converters transform DC input to another voltage level, essential in electronic systems, renewable energy, and automotive electronics.
Crystals and resonators generate and stabilize frequency signals via piezoelectricity. They are used in timing, frequency control, and filters. Crystals are quartz and resonators are ceramic with a built-in capacitor.
Semiconductor diodes control current flow in one direction (uni-directionality) via low resistance. Useful for rectification, voltage regulation, detection, and digital logic.
Discover essential electronic components for your devices, including CPU accelerators, system cache controllers, computer processors, motherboards, and graphics computing systems. Enhance device performance and connectivity with reliable components engineered for seamless integration and optimal functionality.
Fiber optics use light pulses to transmit data over long distances. They have superior bandwidth capacity, low signal attenuation, and secure physical properties. They are essential in telecommunications networks today.
Filters enhance signal processing by selectively passing desired frequencies while suppressing unwanted ones. Filters can be passive (using capacitors, resistors, and inductors) or active (using transistors or amplifiers).
Flash devices are non-volatile storage solutions that offer fast read and write speeds, making them ideal for applications requiring high-speed data transfer. These devices utilize flash memory technology, providing reliable storage for data-intensive tasks such as gaming, multimedia, and enterprise-level applications.
General purpose ICs consist of multiple individual circuits or components (e.g., logic gates, amplifiers, oscillators, etc.) that are combined onto a single integrated circuit chip for a smaller physical footprint.
I/O and storage controllers are crucial components in computer systems, managing input/output operations and storage devices. These controllers facilitate efficient data transfer between peripherals, storage drives, and the central processing unit (CPU), enhancing system performance and enabling seamless connectivity.
Inductors store energy in magnetic fields, oppose sudden changes in current flow and prevent electrical surges. Common inductor applications include power supplies, signal filters, and oscillators.
Interface ICs allow efficient device connectivity with high-speed data transfer and low power consumption.They can be ASIC or FPGA types, and may perform additional functions such as sensing, storage, and conversion.
Logic ICs can be used for storage, memory, amplification, and multiplexing. They perform fundamental logical operations on digital input signals (1, 0, H, L) to generate a corresponding digital output signal.
Memory modules are essential components in electronic devices, storing data temporarily or permanently for processing and retrieval. From volatile RAM (Random Access Memory) to non-volatile ROM (Read-Only Memory), memory technologies vary in speed, capacity, and functionality, catering to diverse application requirements.
Memory ICs store digital data and retain the information even when the power is turned off. They come in various types, like RAM (Random Access Memory) for fast data access, and ROM (Read-Only Memory) for permanent data storage.
Miscellaneous semiconductor components are a diverse category of electronic components that combines elements from a mix of component devices.
Optoelectronic devices interact with light. This family of devices can emit light, detect light, generate current, and transmit light signals for long-distance communication.
Oscillators generate repetitive waveforms, such as sine, square, or triangle waves. They are commonly used to produce stable and precise frequencies for applications like clocks, signal generation, and communication systems.
Other Function Semiconductor components are a diverse category of semiconductor components that perform a range of specialized functions.
Passive component networks operate without a power source and support data transmission within system by performing filtering, energy storage, and/or signal coupling functions.
Peripheral ICs (Integrated Circuits) are designed to control and manage the peripheral devices connected to a computer or other electronic device.
Programmable Logic ICs are user-programmable devices that allow designers to create custom logic circuits. These cost saving ICs offer real-time data processing and maximum design flexibilty.
RF (Radio Frequency) and microwave devices are used in telecommunications, wireless communications, and electronic systems. These devices include amplifiers, attenuators, filters, mixers, oscillators, and antennas, and a host of other components.
Voltage regulators are used to ensure a constant output voltage despite power fluctuations and load changes. Linear and switching regulators are common types used to maintain voltage stability.
Relays are electromagnetic switches that are used to control the flow of electrical current in an electrical circuit. Relays are a safe means of providing isolation between a controlling circuit and a controlled circuit.
Resistors control the flow of electrical current in a circuit by introducing a set resistance. These passive components reduce current flow, adjust signal levels, and bias active elements in circuits.
Transducers convert energy from one form to another and are crucial in sensing, audio and control systems. They transform physical measures like temperature, pressure, or sound into electrical signals for circuits.
Storage drives are hardware devices used to store and retrieve digital data in computers and electronic devices. These drives come in various forms, including hard disk drives (HDDs), solid-state drives (SSDs), and hybrid drives, offering different levels of capacity, speed, and durability to suit specific storage needs.
Storage media encompass physical or digital mediums used for storing and preserving digital data. From optical discs and magnetic tapes to USB flash drives and memory cards, storage media come in diverse formats and capacities, offering flexibility and reliability for data storage and archival purposes.
Storage systems comprise hardware and software components designed to manage and store digital data efficiently. These systems range from simple standalone devices to complex network-attached storage (NAS) and storage area network (SAN) solutions, providing scalable storage capacity and data protection features for businesses and enterprises.
Switches control electrical current flow by making or breaking connections. These devices vary in design and application, from basic on/off switches to complex industrial automation systems.
Telecom integrated circuits (ICs) are specialized electronics for telecommunications, tailored to high data rates, low power use, and reliable long-distance transmission. These devices include amplifiers, filters, ADCs, DACs, and more-- and they are often integrated on one chip for specific telecom tasks.
Terminal blocks, or connection terminals, are modular blocks that bring together multiple electrical wires at one connection point. They offer a reliable, organized way to terminate cables.
Thermal management devices control heat in electronic systems, preventing overheating and ensuring optimal performance and reliability. Examples include heat sinks, fans, and thermal interface materials that dissipate or transfer heat away from components.
Transformers are devices that alter electrical voltage levels between circuits through electromagnetic induction. They are vital in power distribution, converting high-voltage electricity for transmission and lower voltage for safe usage.
Transistors are 3-layer semiconductor devices that regulate the flow of electrical current. They function as amplifiers, boosting weak signals, and as switches, controlling the flow of current between terminals.
Triggering devices initiate electronic processes or events in response to specific conditions. These devices support many automated tasks such as activating switches and signals, or turning on lights when motion is detected.
Video cards, also known as graphics cards or GPU (Graphics Processing Unit), are essential components in computers, responsible for rendering graphics and images on display devices. These cards feature dedicated processors and memory, delivering smooth and immersive visual experiences for gaming, multimedia, and professional applications.
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START499 by STMicroelectronics is an NPN RF BJT designed for amplifier applications, featuring a max power dissipation of 0.9 W and a nominal transition frequency of 42 GHz. Its compact rectangular package supports surface mounting with gull-wing terminals. Ideal for ultra-high frequency circuits, it operates at a max collector-emitter voltage of 4.5 V.
Median Price
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Vyrian
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Digiode
Anansix
IDEA Electronic Components Group
$0.394
$0.354
MKK Technologies
$0.740
DigiPath Technology Company
Parana Technologies
$0.471
Corphita
The use of plastic/epoxy material ensures durability and resistance to environmental factors, making this transistor suitable for long-term applications.
NPN transistors are commonly used in amplifier applications, providing efficient current amplification and versatility in circuit design.
Single configuration allows for simplified circuit designs, making it easier to integrate into compact applications.
Designed for amplification, this transistor is perfect for audio and RF signal applications, enhancing signal quality.
Surface mount capability allows for compact PCB designs and automated assembly processes, increasing manufacturing efficiency.
The rectangular shape of the package aids in space-efficient design on printed circuit boards.
Gull wing terminals offer excellent soldering characteristics and provide strong mechanical support, ensuring reliability in connections.
Operation in the ultra-high frequency band makes this transistor ideal for high-speed applications, including RF communication and broadcasting.
Having four terminals allows for flexible circuit configuration, making it compatible with various designs.
With a maximum power dissipation of 0.9W, this transistor can handle substantial power levels, ensuring stable operation in demanding environments.
The small outline package style supports compact device designs while maintaining high performance.
A minimum DC current gain of 50 indicates decent amplification, making it effective for various low-power amplifier applications.
This transistor is suitable for low-voltage applications, enhancing safety and preventing circuit damage.
Silicon material provides excellent thermal stability and efficiency, ensuring reliable performance in various conditions.
With a maximum collector current of 0.6A, this transistor offers good handling of signal currents, supporting higher power applications.
Matte tin terminal finish enhances solderability and reduces corrosion, improving the longevity and reliability of the product.
Dual terminal position provides an effective layout for circuit designs, allowing for better signal integrity and performance.
Emitter connection is standard for most BJT applications, allowing for straightforward integration into existing circuit designs.
A high nominal transition frequency of 42,000 MHz makes this transistor ideal for high-frequency applications, ensuring efficient signal processing.
RF Small Signal Bipolar Junction Transistors (BJT) START499 attributes and parameters. Explore more RF Small Signal Bipolar Junction Transistors (BJT) devices from STMicroelectronics
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START499 Transistors trade compliance attributes, and parameters.
ECCN
EAR99
ECCN Governance
EAR
STMicroelectronics is a global leader in the semiconductor manufacturing industry, with over 35 years of experience providing innovative and advanced technologies for customers around the world. Headquartered in Netherlands, STMicroelectronics has more than 51,323 employees worldwide and operates across 32 countries all over Europe, Asia-Pacific and the Americas. The company’s portfolio includes integrated circuits, discrete components, application-specific standard products, and computer chipsets. STMicroelectronics serves a wide range of industries such as automotive, consumer markets, healthcare and industrial applications.
President, CEO
Jean-Marc Chery
President, CFO, Finance, Purchasing,Enterprise Risk Management & Resilience
Lorenzo Grandi
President, Sales & Marketing
Jerome Roux
Castelletto
Fabrication
Fab Initiation
1968
Italy
Wafer Capacity
SGFAB AMK 6
2000
Singapore
29,000
AG200
Agrate Brianza
14,000
RST 8
France
Rousset
35,000
Crolles 1
1993
Crolles
30,000
Crolles 2-ext. mod 5
Crolles 2-ext. mod 2
2022
Crolles 2-ext. mod 3
2023
Crolles 2
2004
28,000
1985
SiC Fab
2006
Sweden
Norrköping
10,000
Fab 3
2005
Tours
2,000
Fab 1 & Fab 2
1978
55,000
Fab 2
1997
Catania
SGFAB-AMK 6E
2003
145,000
SGFAB-AMJ 9
1984
152,000
AG300 (R3)
1980
25,000
1987
34,000
AG300
2024
Crolles 2-ext. mod 1
2020
Fab 1 6-inch fab
2013
11,000
SiC 6-inch line
2021
2,500
200mm GaN
2018
SGFAB-AMK 8
2001
Crolles 2- JV Fab
SGFAB-AMK 6
2016
38,125
SGFAB-AMK 2E
2010
20,000
Silicon Carbide A.B.
SiC wafer/EPI Fab
SiC Device Fab
2025
NUP2105LT1G
Onsemi
NUP2105LT1G by Onsemi is a Transient Suppression Device with 350W power dissipation, 29.1V breakdown voltage, and 44V clamping voltage. Commonly used in electronic circuits for surge protection due to its bidirectional polarity and silicon diode element material.
SMBJ18CA
Vishay Semiconductors
TRANS VOLTAGE SUPPRESSOR DIODE; Terminal Position: DUAL; Terminal Form: J BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
1N4148
Changzhou Galaxy Century Microelectronics
RECTIFIER DIODE; Surface Mount: NO; Config: SINGLE; Peak Reflow Temperature (C): 260; No. of Phases: 1; Diode Element Material: SILICON;
2N7002
Vishay Siliconix
N-CHANNEL; Configuration: SINGLE; Surface Mount: YES; No. of Elements: 1; Terminal Form: GULL WING; Qualification: Not Qualified;
LM107H/883
Rochester Electronics
OPERATIONAL AMPLIFIER; Temperature Grade: MILITARY; Terminal Form: WIRE; No. of Terminals: 8; Package Shape: ROUND; Maximum Average Bias Current (IIB): .1 uA;
Diotec Semiconductor Ag
RECTIFIER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: ROUND;
LM317AEMP/NOPB
Texas Instruments
LM317AEMP/NOPB by Texas Instruments is an adjustable positive single output standard regulator with a max output voltage of 37V and a max output current of 1.5A. It operates in temperatures ranging from -40°C to 125°C, making it suitable for various applications requiring precise voltage regulation in a compact package.
1N4148WS
Surge Components
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: FLAT; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
ULN2803A
STMicroelectronics
NPN; Configuration: 8 BANKS, DARLINGTON WITH BUILT-IN DIODE AND RESISTOR; Surface Mount: NO; Maximum Collector Current (IC): .5 A; No. of Elements: 8; Minimum DC Current Gain (hFE): 1000;
Tak Cheong Electronics Holdings
2N2222A
Central Semiconductor
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 250 MHz; Transistor Application: SWITCHING; Transistor Element Material: SILICON;
Bytesonic Electronics
MMBF170LT1G
MMBF170LT1G by Onsemi is a N-CHANNEL FET with 60V DS Breakdown Voltage and 0.5A Drain Current. Ideal for SWITCHING applications, it operates in ENHANCEMENT MODE with a max power dissipation of 0.225W. This small outline transistor has a temperature range from -55 to 150 °C.
Allegro MicroSystems
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 300 MHz; Maximum Power Dissipation (Abs): .5 W; Maximum Collector Current (IC): .8 A;
SS14
Hitano Enterprise
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
Renesas Technology
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: YES; Package Shape: ROUND;
Micro Commercial Components
Semiconductors
EU2B-YS3303C
Idec
ROTARY SWITCH;
CRGCQ0805F10K
TE Connectivity
TE Connectivity's CRGCQ0805F10K is a 10000 ohm fixed resistor with 1% tolerance. It operates b/w -55 to 155 °C and has a power dissipation of 0.125 W. Ideal for surface mount applications in automotive electronics due to AEC-Q200 standard compliance.
LM3046MX/NOPB
National Semiconductor
NPN; Configuration: COMPLEX; Surface Mount: YES; Nominal Transition Frequency (fT): 550 MHz; Maximum Collector Current (IC): .05 A; Terminal Form: GULL WING;
BFY90
Baneasa S A
RF Small Signal Bipolar Transistors; Surface Mount: NO; Qualification: Not Qualified; Terminal Form: WIRE; Package Body Material: METAL; Package Shape: ROUND;
Zetex Plc
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 1300 MHz; Maximum Power Dissipation (Abs): .2 W; Maximum Collector Current (IC): .025 A;
TIS109
TIS109 by Texas Instruments is a NPN BJT transistor with max. collector-emitter voltage of 30V, ideal for switching applications. It has a max. power dissipation of 0.625W and nominal transition frequency of 350MHz, suitable for high-frequency operations in cylindrical package style.
KSC1674O
KSC1674O by Onsemi is an NPN RF BJT with a max VCEsat of 0.3V, ideal for amplifier applications in the UHF band. It has a min hFE of 70, max fT of 600MHz, and can handle a max IC of 0.02A.
2SC5646A-TL-H
Onsemi's 2SC5646A-TL-H is an NPN RF BJT with max power dissipation of 0.1W, hFE of 100, and fT of 8000MHz. Ideal for applications requiring high-frequency signal amplification in a surface-mount configuration.
NSVF4015SG4T1G
NSVF4015SG4T1G by Onsemi is an NPN RF BJT transistor with a max power dissipation of 0.45W and a transition frequency of 10GHz. It is designed for ultra-high frequency band applications such as amplifiers, featuring a small outline package and operating temperature range from -55°C to 150°C.
2SC5662T2LP
ROHM
ROHM 2SC5662T2LP is a NPN RF BJT transistor with max. fT of 3200 MHz, hFE of 56, and VCE(max) of 11V. Ideal for S Band applications like amplifiers due to its small outline package and high transition frequency capability.
MMBTH24-7-F
Diodes Incorporated
Diodes Inc. MMBTH24-7-F is a NPN BJT transistor for RF applications. Features include 400MHz fT, 40V VCEO, and 0.3W Ptot. Ideal for ultra-high frequency amplification in compact SOT package with Gull Wing terminals.
BF959
BF959 by Onsemi is a NPN RF BJT transistor with 3 terminals. It operates in the very high frequency band up to 700 MHz, ideal for amplifier applications. With a max power dissipation of 0.625W and max collector current of 0.1A, it can handle various signal amplification tasks efficiently.
BFP520H6327XTSA1
Infineon Technologies
BFP520H6327XTSA1 by Infineon is a NPN RF BJT with 4 terminals, operating in L Band up to 45GHz. It has a max power dissipation of 0.1W and max collector-emitter voltage of 2.5V. Ideal for amplifier applications due to its high transition frequency and AEC-Q101 standard compliance.
MCH4020-TL-H
The Onsemi MCH4020-TL-H is an NPN RF BJT with a max power dissipation of 0.4W, fT of 13GHz, and hFE of 60. Ideal for high-frequency applications in surface-mount configurations, it operates up to 150°C with a max collector current of 0.15A.
MPS3640
Crimson Semiconductor
PNP; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 500 MHz; Maximum Power Dissipation (Abs): .625 W; Maximum Collector Current (IC): .08 A;
NXP Semiconductors
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 1400 MHz; Maximum Collector Current (IC): .05 A; Transistor Element Material: SILICON;
CA3146E
NPN; Configuration: COMPLEX; Surface Mount: NO; Nominal Transition Frequency (fT): 500 MHz; Maximum Collector Current (IC): .05 A; Transistor Application: AMPLIFIER;
BFU590GX
The NXP Semiconductors BFU590GX is a RF Small Signal BJT transistor with NPN polarity. It has a max operating temperature of 150°C and can handle a max collector-emitter voltage of 12V. This transistor is commonly used in amplifiers for L Band applications.
934066878225
NPN; Configuration: SINGLE; Surface Mount: YES; Nominal Transition Frequency (fT): 53000 MHz; Maximum Power Dissipation (Abs): .16 W; Maximum Collector Current (IC): .03 A;
BFP620FE7764
BFP620FE7764 by Infineon Technologies is a NPN RF BJT transistor with 4 terminals, operating in the C band up to 65 GHz. It has a max collector-emitter voltage of 2.3V and collector current of 0.08A, making it suitable for high-frequency applications like wireless communication systems. The package is surface mountable with a small outline shape and matte tin finish.
BFU520WX
The NXP Semiconductors BFU520WX is an NPN RF BJT transistor with a max collector-emitter voltage of 12V and fT of 10GHz. It is designed for amplifier applications in the L band, featuring a small outline package with gull wing terminals for surface mount assembly. Operating from -40°C, it offers a peak reflow temperature of 260°C and complies with AEC-Q101 and IEC-60134 standards.
2SC4399-5
RF Small Signal Bipolar Transistors;
Partstack™ will investigate all reported instances of potential suspect/counterfeit part listings.
START405
NPN; Configuration: SINGLE; Surface Mount: YES; Nominal Transition Frequency (fT): 42000 MHz; Maximum Power Dissipation (Abs): .045 W; Maximum Collector Current (IC): .01 A;
START405TR
START420
NPN; Configuration: SINGLE; Surface Mount: YES; Maximum Collector Current (IC): .04 A; Package Body Material: PLASTIC/EPOXY; No. of Elements: 1;
START420TR
NPN; Configuration: SINGLE; Surface Mount: YES; Maximum Power Dissipation (Abs): .18 W; Maximum Collector Current (IC): .04 A; Maximum Collector-Emitter Voltage: 4.5 V;
START450
NPN; Configuration: SINGLE; Surface Mount: YES; Nominal Transition Frequency (fT): 42000 MHz; Maximum Power Dissipation (Abs): .45 W; Maximum Collector Current (IC): .1 A;
START450TR
START499D
NPN; Configuration: SINGLE; Surface Mount: YES; Maximum Power Dissipation (Abs): 1.7 W; Maximum Collector Current (IC): 1 A; Maximum Time At Peak Reflow Temperature (s): 30;
START499ETR
NPN; Configuration: SINGLE; Surface Mount: YES; Nominal Transition Frequency (fT): 42000 MHz; Maximum Power Dissipation (Abs): .6 W; Maximum Collector Current (IC): .6 A;
START499TR
NPN; Configuration: SINGLE; Surface Mount: YES; Nominal Transition Frequency (fT): 42000 MHz; Maximum Power Dissipation (Abs): .9 W; Maximum Collector Current (IC): .6 A;
START540
NPN; Configuration: SINGLE; Surface Mount: YES; Nominal Transition Frequency (fT): 45000 MHz; Maximum Collector Current (IC): .04 A; Highest Frequency Band: C BAND;
START540TR
NPN; Configuration: SINGLE; Surface Mount: YES; Nominal Transition Frequency (fT): 45000 MHz; Maximum Power Dissipation (Abs): .18 W; Maximum Collector Current (IC): .04 A;
START620TR
NPN; Configuration: SINGLE; Surface Mount: YES; Nominal Transition Frequency (fT): 45000 MHz; Maximum Power Dissipation (Abs): .135 W; Maximum Collector Current (IC): .04 A;
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