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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START499TR by STMicroelectronics is an NPN RF BJT designed for amplifier applications, featuring a max power dissipation of 0.9 W and operating temp up to 150 °C. It supports ultra-high frequency with a transition frequency of 42 GHz. This compact surface mount transistor ensures efficient performance in small electronic devices.
Median Price
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3
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1k+
Vyrian
1+ parts
100+ parts
1k+ parts
10k+ parts
Anansix
Digiode
IDEA Electronic Components Group
$0.620
$0.558
MKK Technologies
$1.166
DigiPath Technology Company
Kepictronics
Corphita
Parana Technologies
$0.741
The use of plastic/epoxy as the package body material ensures durability and protection against environmental factors, making this transistor suitable for various applications.
The NPN configuration is widely used in digital and analog circuits, providing versatility and compatibility in a range of electronic designs.
Single configuration simplifies integration into circuits, allowing for easier design and implementation in various electronic systems.
Designed for amplifier applications, this BJT delivers excellent signal amplification, making it ideal for audio and RF applications.
Surface mount capability allows for compact PCB designs and automated assembly, enhancing production efficiency and reducing overall footprint.
The rectangular package shape provides efficient use of board space and simplifies thermal management in electronic designs.
Gull wing terminal form facilitates reliable soldering and ensures a secure connection to the PCB, improving overall product reliability.
Operating in the ultra-high frequency band makes this transistor suitable for high-speed applications such as wireless communication and RF circuits.
Four terminals offer flexibility in circuit design, enabling more complex configurations and the ability to handle mixed signals.
With a maximum power dissipation of 0.9 W, this transistor can operate efficiently without overheating, ensuring reliable performance in demanding applications.
The small outline package style supports compact designs, allowing for use in space-constrained applications without sacrificing performance.
A maximum operating temperature of 150 °C ensures reliability in high-temperature environments, making it suitable for automotive and industrial applications.
With a maximum collector-emitter voltage of 4.5 V, this transistor provides stable performance for low-voltage applications, ensuring safety and efficiency.
Silicon is a standard material for BJTs, offering good thermal stability and electrical performance, making it a reliable choice for general applications.
A maximum collector current of 0.6 A allows this BJT to handle moderate current loads, suitable for driving small loads in low-power applications.
Matte tin terminal finish provides excellent solderability and corrosion resistance, ensuring long-term reliability in various environments.
Dual terminal position enhances layout flexibility and allows for better thermal management in electronic circuit designs.
Emitter case connection simplifies integration into amplifier circuits, facilitating easier design and providing good thermal conductance.
A nominal transition frequency of 42,000 MHz indicates high-speed operation capability, making it suitable for RF and high-frequency applications.
RF Small Signal Bipolar Junction Transistors (BJT) START499TR attributes and parameters. Explore more RF Small Signal Bipolar Junction Transistors (BJT) devices from STMicroelectronics
Additional Features:
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START499TR 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
1N4148
Diotec Semiconductor Ag
RECTIFIER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: ROUND;
2N2222A
Transistor & Electronic
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 300 MHz; Maximum Power Dissipation (Abs): .5 W; Maximum Collector Current (IC): .8 A;
LM358N
Kec
OPERATIONAL AMPLIFIER; Temperature Grade: COMMERCIAL; Terminal Form: THROUGH-HOLE; No. of Terminals: 8; Package Code: DIP; Package Shape: RECTANGULAR;
2N7002
N-CHANNEL; Configuration: SINGLE WITH BUILT-IN DIODE; Surface Mount: YES; Field Effect Transistor Technology: METAL-OXIDE SEMICONDUCTOR; Transistor Application: SWITCHING; Package Body Material: PLASTIC/EPOXY;
FSMLF327
Fox Electronics
FSMLF327 by Fox Electronics is a crystal oscillator with 20 ppm frequency tolerance, 144% stability, and 50000 ohm series resistance. Ideal for applications requiring precise timing such as communication systems, industrial automation, and consumer electronics. Operating temperature range from -40 to 85 °C.
BSS138
Fairchild Semiconductor
N-CHANNEL; Configuration: SINGLE WITH BUILT-IN DIODE; Surface Mount: YES; Maximum Power Dissipation (Abs): .36 W; Operating Mode: ENHANCEMENT MODE; Qualification: Not Qualified;
Semitron
RECTIFIER DIODE; Surface Mount: NO; JESD-609 Code: e0; Maximum Output Current: .15 A; Maximum Operating Temperature: 200 Cel; Maximum Reverse Recovery Time: .004 us;
M39029/56-351
Carlisle Interconnect Technologies
CONNECTOR ACCESSORY; MIL Conformity: YES; Contact Type: CRIMP; Removal Tools: M81969/8-06, M81969/14-02; IEC Conformity: NO; Contact Gender: FEMALE;
BAV99
Onsemi
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 3; Surface Mount: YES; Package Shape: RECTANGULAR;
M24308/2-1F
Esterline Technologies
D SUBMINIATURE CONNECTOR; Option: GENERAL PURPOSE; Contact Gender: FEMALE; Mounting Option-1: HOLE .115-.125; Mounting Type: CABLE AND PANEL; Mating Contact Finish: NOT SPECIFIED;
Semicoa
Baneasa S A
AMS1117-3.3
Advanced Monolithic Systems
AMS1117-3.3 by Advanced Monolithic Systems is a fixed positive single output LDO regulator with 1A max output current, 3% voltage tolerance, and 1.3V dropout voltage. Ideal for applications requiring stable 3.3V supply in compact designs due to its small outline package and excellent load regulation of 0.025%.
LM2931Z-5.0RPG
LM2931Z-5.0RPG by Onsemi is a Fixed Positive Single Output LDO Regulator with 5V Nominal Output Voltage, 0.1A Max Output Current, and 6V Min Input Voltage. It operates in temperatures ranging from -40 to 125 °C and is ideal for applications requiring stable voltage regulation in electronic circuits.
Micro Commercial Components
Small Signal Bipolar Transistors; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 300 MHz; Maximum Collector Current (IC): .8 A; JESD-609 Code: e0;
LM358AN
Signetics
SS14
Rugao Dachang Electronic
RECTIFIER DIODE; Surface Mount: YES; Maximum Repetitive Peak Reverse Voltage: 40 V; Maximum Forward Voltage (VF): .55 V; No. of Elements: 1; Technology: SCHOTTKY;
M39029/56351
Souriau
CONNECTOR ACCESSORY; MIL Conformity: YES; Contact Gender: FEMALE; Insertion Tools: M81969/14-10; Tool Settings: M22520/2-10; DIN Conformity: NO;
LM358DT
STMicroelectronics
LM358DT by STMicroelectronics is a dual operational amplifier with a max input offset voltage of 9000 uV. It operates at a nominal voltage of 5V and has a min voltage gain of 25000. This amplifier is commonly used in applications requiring high precision and low power consumption.
BFR93A
Vishay Telefunken
RF Small Signal Bipolar Transistors; Surface Mount: YES; Terminal Position: DUAL; Terminal Form: GULL WING; Package Body Material: PLASTIC/EPOXY; Package Style (Meter): SMALL OUTLINE;
HFA3102BZ96
Renesas Electronics
HFA3102BZ96 by Renesas Electronics is an NPN RF BJT transistor with 6 elements and 14 terminals. It operates in the ultra-high frequency band up to 10GHz, ideal for amplifier applications. With a max collector-emitter voltage of 8V and a transition frequency of 10,000MHz, it offers high performance in a small outline package.
BFR93A,215
NXP Semiconductors
NXP Semiconductors' BFR93A,215 is a NPN RF BJT transistor with max. freq. of 6000 MHz and hFE of 40, ideal for L Band applications like amplifiers. It has a max. power dissipation of 0.35 W, operates up to 175°C, and features a small outline package with gull wing terminals for surface mount assembly.
MPS3563
MPS3563 by Onsemi is an NPN RF BJT transistor with a max fT of 1500 MHz. It has a max IC of 0.05A and Ptot of 0.625W, making it suitable for ultra-high frequency amplifier applications. The package is cylindrical with through-hole terminals and can operate up to 150 °C.
MSC80195
STMicroelectronics' MSC80195 is an NPN BJT transistor with a max fT of 3200 MHz. It has a max IC of 0.3A and Pdiss of 4.9W, suitable for L Band amplifier applications due to its high transition frequency and power dissipation capabilities.
BFS17
Vishay Semiconductors
NPN; Configuration: SINGLE; Surface Mount: YES; Nominal Transition Frequency (fT): 2400 MHz; Maximum Collector Current (IC): .025 A; Highest Frequency Band: ULTRA HIGH FREQUENCY BAND;
BF495
Micro Electronics
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 200 MHz; Maximum Power Dissipation (Abs): .3 W; Maximum Collector Current (IC): .03 A;
2SC4399
RF Small Signal Bipolar Transistors;
NTE2403
Nte Electronics
NTE2403 by Nte Electronics is a PNP RF BJT transistor with 15V VCE, 0.025A IC, and 5000MHz fT. Ideal for ultra-high frequency amplifier applications in small outline packages with gull wing terminals for surface mount assembly.
BFQ254/I
PNP; Configuration: SINGLE; Surface Mount: YES; Nominal Transition Frequency (fT): 1300 MHz; Maximum Collector Current (IC): .3 A; JESD-30 Code: O-CRDB-F4;
SD1891-03
SD1891-03 by STMicroelectronics is a NPN BJT with 15V VCEO, 1.1A IC, and 8.8W Ptot. Ideal for L Band applications, this transistor has a hFE of 15 and operates up to 200 °C. Its ceramic-metal package with flat terminals makes it suitable for flange mount configurations.
BFR92A
NPN; Configuration: SINGLE; Surface Mount: YES; Nominal Transition Frequency (fT): 5000 MHz; Maximum Power Dissipation (Abs): .35 W; Maximum Collector Current (IC): .025 A;
KSP10
The Onsemi KSP10 is an NPN BJT transistor with a max VCEsat of 0.5V and fT of 650MHz. It is used in RF applications due to its ultra-high frequency band, with a max collector-emitter voltage of 25V and power dissipation of 1W.
MMBTH10
MMBTH10 by Onsemi is an NPN RF BJT transistor with a max fT of 650 MHz. It's a single configuration amplifier in a small outline package, suitable for ultra-high frequency applications. With a max operating temp of 150°C and Pdiss of 0.225W, it's ideal for high-frequency circuit designs.
BFU590QX
BFU590QX by NXP Semiconductors is a RF Small Signal BJT with NPN polarity, suitable for amplifier applications. It has a max fT of 8000 MHz, Vce of 12V, and Ic of 0.2A. This transistor comes in a small outline package with flat terminals and is surface mountable.
BFR93AR
NPN; Configuration: SINGLE; Surface Mount: YES; Nominal Transition Frequency (fT): 6000 MHz; Maximum Power Dissipation (Abs): .3 W; Maximum Collector Current (IC): .035 A;
934056631215
NPN; Configuration: SINGLE; Surface Mount: YES; Nominal Transition Frequency (fT): 9000 MHz; Maximum Collector Current (IC): .05 A; Terminal Form: GULL WING;
JAN2N2907A
Vpt Components
PNP; Configuration: SINGLE; Surface Mount: NO; Maximum Collector Current (IC): .6 A; Maximum Collector-Emitter Voltage: 60 V; Highest Frequency Band: VERY HIGH FREQUENCY BAND;
2SC5226A-5-TL-E
Onsemi's 2SC5226A-5-TL-E is an NPN RF BJT with a max fT of 7000 MHz. It has a max VCE of 10V and IC of 0.07A, suitable for ultra-high frequency applications. This transistor comes in a small outline package with Gull Wing terminals, ideal for surface mount designs.
BFR93AW-E6327
Infineon Technologies
BFR93AW-E6327 by Infineon Technologies is a NPN RF BJT transistor with 3 terminals. It operates in L Band with a transition frequency of 6000 MHz, ideal for amplifier applications. This small outline package has a max power dissipation of 0.3 W and can handle up to 12 V collector-emitter voltage.
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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
START499
NPN; Configuration: SINGLE; Surface Mount: YES; Nominal Transition Frequency (fT): 42000 MHz; Maximum Power Dissipation (Abs): .9 W; Maximum Collector Current (IC): .6 A;
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;
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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