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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START540 by STMicroelectronics is an NPN RF BJT designed for amplifier applications. It features a max collector current of 40 mA, operates up to 150 °C, and boasts a nominal transition frequency of 45 GHz. Its compact surface mount design ensures efficient performance in C band communications.
Median Price
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Digiode
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Anansix
Vyrian
IDEA Electronic Components Group
$0.416
$0.374
MKK Technologies
$0.782
DigiPath Technology Company
Kepictronics
Corphita
Parana Technologies
$0.497
The durable plastic/epoxy material provides excellent protection against environmental factors, enhancing the reliability and lifespan of the transistor.
Being an NPN transistor makes this device suitable for a variety of applications, including amplifiers, enhancing its versatility in circuit designs.
The single configuration simplifies circuit design and integration, making it easier to implement in various applications.
Designed specifically for amplification, this transistor delivers strong performance in audio and signal processing applications.
The surface mount capability allows for a compact PCB design and easier automated assembly processes, improving manufacturability.
The rectangular shape optimizes space on the PCB, allowing for denser circuit layouts and more efficient use of board real estate.
Gull wing terminals provide a robust mechanical connection and facilitate easy soldering, enhancing ease of assembly and reliability.
Operating in the C band makes this transistor suitable for RF applications, ideal for communication and satellite systems.
With four terminals, this transistor supports efficient circuit connectivity and versatile configurations for various applications.
The small outline packaging enhances the density of circuit designs, making it suitable for compact devices.
A maximum operating temperature of 150 °C ensures that this transistor can perform reliably in harsh environments.
The low maximum collector-emitter voltage makes this transistor ideal for low-voltage applications, ensuring safe operation in sensitive circuits.
Silicon provides excellent electrical properties and reliability, making this transistor effective for a variety of electronic applications.
With a collector current of 40 mA, this transistor is capable of handling a range of signal amplification tasks effectively.
The dual terminal position enhances ease of integration on PCBs and supports flexible circuit design strategies.
An emitter case connection allows for straightforward integration into circuits, simplifying design and assembly processes.
A high nominal transition frequency of 45 GHz indicates that this transistor can operate effectively at high frequencies, suitable for advanced RF applications.
RF Small Signal Bipolar Junction Transistors (BJT) START540 attributes and parameters. Explore more RF Small Signal Bipolar Junction Transistors (BJT) devices from STMicroelectronics
Additional Features:
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START540 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
LL4148
Semtech Electronics
RECTIFIER DIODE; Terminal Position: END; Terminal Form: WRAP AROUND; No. of Terminals: 2; Surface Mount: YES; Package Shape: ROUND;
Leshan Radio
RECTIFIER DIODE; Surface Mount: YES; Maximum Non Repetitive Peak Forward Current: 2 A; Maximum Reverse Recovery Time: .004 us; No. of Phases: 1; Maximum Operating Temperature: 175 Cel;
DP83848IVVX/NOPB
National Semiconductor
ETHERNET TRANSCEIVER; Temperature Grade: INDUSTRIAL; Terminal Form: GULL WING; No. of Terminals: 48; Package Code: QFP; Package Shape: SQUARE;
2N2222A
Vpt Components
NPN; Configuration: SINGLE; Surface Mount: NO; Maximum Power Dissipation (Abs): 1 W; Maximum Collector Current (IC): .8 A; Maximum Power Dissipation Ambient: .5 W;
SPC TECHNOLOGY/ MULTICOMP
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 300 MHz; Maximum Power Dissipation (Abs): .5 W; Maximum Collector Current (IC): .8 A;
ULN2803A
Sanken Electric
NPN; Configuration: 8 BANKS, DARLINGTON WITH BUILT-IN DIODE AND RESISTOR; Surface Mount: NO; Maximum Collector Current (IC): .5 A; JESD-30 Code: R-PDIP-T18; Package Body Material: PLASTIC/EPOXY;
ERJ2RKF1002X
Panasonic
Panasonic's ERJ2RKF1002X is a fixed resistor with 10000 ohm resistance, 1% tolerance, and 0.1 W power dissipation. Ideal for surface mount applications in automotive electronics due to AEC-Q200 compliance and operating temperature range of -55 to 155 °C.
1N4148WS
Jiangsu Changjiang Electronics Technology
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
C1206C104M5RACTU
KEMET Corporation
KEMET C1206C104M5RACTU is a ceramic capacitor with 0.1uF capacitance and 50V rated DC voltage. It has X7R temperature characteristics, -55 to 125°C operating range, and ±20% tolerance. Ideal for surface mount applications in electronics requiring stable capacitance across temperatures.
Gec Plessey Semiconductors
FDLL4148
NDT2955
P-CHANNEL; Configuration: SINGLE WITH BUILT-IN DIODE; Surface Mount: YES; Maximum Power Dissipation (Abs): 3 W; JESD-609 Code: e0; Field Effect Transistor Technology: METAL-OXIDE SEMICONDUCTOR;
LM2675M-ADJ/NOPB
SWITCHING REGULATOR; Temperature Grade: AUTOMOTIVE; No. of Terminals: 8; Package Code: SOP; Package Shape: RECTANGULAR; Surface Mount: YES;
RC0805FR-0710KL
Yageo
Yageo's RC0805FR-0710KL is a 10000 ohm SMT fixed resistor with 1% tolerance and 0.125 W power dissipation. Ideal for applications requiring resistance to operate b/w -55°C to 155°C, such as in automotive electronics or industrial control systems. Features metal glaze/thick film technology and matte tin finish with nickel barrier.
BAV99
Panjit International
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 3; Surface Mount: YES; Package Shape: RECTANGULAR;
SMBJ18CA
Jiangsu Jiejie Microelectronics
TRANS VOLTAGE SUPPRESSOR DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
SDR0604-101KL
Bourns
SDR0604-101KL by Bourns is a surface mount fixed inductor with a nominal inductance of 100 uH. It is a general purpose inductor suitable for power applications, with a max rated current of 0.52 A and a self-resonance frequency of 9 MHz.
Rectron
LM555CM
Renesas Electronics
Analog Waveform Generation Functions; Temperature Grade: COMMERCIAL; No. of Terminals: 8; Package Code: SOP; Package Shape: RECTANGULAR; Surface Mount: YES;
2N3866
Tt Electronics Plc
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 500 MHz; Maximum Collector Current (IC): .4 A; JEDEC-95 Code: TO-205AD;
BFR93A
New Jersey Semiconductor Products
NPN; Configuration: SINGLE; Nominal Transition Frequency (fT): 6000 MHz; Maximum Collector Current (IC): .035 A; No. of Elements: 1; Maximum Collector-Emitter Voltage: 12 V;
MPS5179ZL1
Onsemi
MPS5179ZL1 by Onsemi is an NPN RF BJT with a max collector-emitter voltage of 12V and fT of 900MHz. Ideal for amplifier applications, it has a max collector current of 0.05A and a package style of cylindrical PLASTIC/EPOXY.
Asi Semiconductor
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 500 MHz; Maximum Power Dissipation (Abs): 5 W; Maximum Collector Current (IC): .4 A;
MMBTH10M3T5G
MMBTH10M3T5G by Onsemi is a NPN RF BJT with 650 MHz fT, 60 min hFE, and 0.64 W Pd. It is used in RF applications due to its small outline package and high transition frequency. The transistor operates up to 150 °C and has matte tin terminal finish for surface mount assembly.
BFR193WH6327XTSA1
Infineon Technologies
BFR193WH6327XTSA1 by Infineon is a NPN RF BJT transistor with 12V VCE, 8000MHz fT, and 0.08A IC. Ideal for L Band applications like amplifiers due to its high transition frequency and low collector-base capacitance. Features Gull Wing terminals in a small outline package for surface mount assembly.
BF776H6327XTSA1
Infineon's BF776H6327XTSA1 is a NPN BJT transistor for ultra-high frequency amplification. With 4 terminals, it operates at max 150°C and has a fT of 46GHz. Its plastic package with gull wing terminals makes it suitable for surface mount applications.
2SC5415AF-TD-E
RF Small Signal Bipolar Transistors; Maximum Time At Peak Reflow Temperature (s): 30; Moisture Sensitivity Level (MSL): 1; Terminal Finish: TIN BISMUTH; Peak Reflow Temperature (C): 260; JESD-609 Code: e6;
HFA3046BZ
Integrated Device Technology
NPN; Configuration: COMPLEX; Surface Mount: YES; Nominal Transition Frequency (fT): 8000 MHz; Maximum Collector Current (IC): .037 A; Qualification: Not Qualified;
BF224
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 850 MHz; Maximum Collector Current (IC): .05 A; No. of Elements: 1;
MMBTH17LT1
MMBTH17LT1 by Onsemi is an NPN RF BJT transistor with a max collector-emitter voltage of 15V and fT of 800MHz. It is designed for ultra-high frequency band applications like amplifiers, featuring a small outline package with gull wing terminals. The transistor's silicon element material ensures high performance in RF signal amplification.
MPS918RL
MPS918RL by Onsemi is an NPN RF BJT transistor with a max collector-emitter voltage of 15V and a nominal transition frequency of 600MHz. It is designed for amplifier applications in the ultra-high-frequency band, featuring a max operating temperature of 150 °C. This through-hole transistor has a package style of cylindrical shape with three terminals.
SD1438
STMicroelectronics
NPN; Surface Mount: NO; Transistor Element Material: SILICON; JESD-609 Code: e0; Terminal Finish: Tin/Lead (Sn/Pb);
2N2907AUB
RF Small Signal Bipolar Transistors;
BFU550XRR
NXP Semiconductors
BFU550XRR by NXP Semiconductors is a RF BJT transistor with NPN polarity, suitable for amplifier applications in L Band frequencies. It features a max operating temperature of 150°C, collector-emitter voltage of 12V, and transition frequency of 11GHz. This small outline package with Gull Wing terminals is ideal for surface mount designs requiring high-frequency performance.
MPS3640
Fairchild 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;
BFP843H6327XTSA1
BFP843H6327XTSA1 by Infineon is a NPN RF BJT transistor with 4 terminals, suitable for C band applications. It has a max power dissipation of 0.125W, hFE of 150, and operates up to 150°C. Ideal for amplifier circuits in high-frequency communication systems due to its small outline package and low collector-emitter voltage of 2.25V.
BFR520,215
NXP Semiconductors' BFR520,215 is a NPN RF BJT transistor with 3 terminals. It operates in L Band with fT of 9000 MHz and hFE of 60. Ideal for amplifier applications, it has a max power dissipation of 0.3W and can handle a max collector current of 0.07A at an operating temp of 175°C.
MSC2295-CT1G
MSC2295-CT1G by Onsemi is an NPN RF BJT transistor with a max operating temperature of 150 °C. It has a min DC current gain of 110 and a nominal transition frequency of 150 MHz, making it suitable for amplifier applications. The package style is small outline with Gull Wing terminals and a max collector-emitter voltage of 20V.
BFY90
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;
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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;
START499TR
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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