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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Featured manufacturers
KLB4 by Littelfuse is a 4A fast blow electric fuse with 250V AC/DC rated voltage, ideal for inline mounting. With dimensions of 14.3mm x 50.8mm and high breaking capacity of 200kA, it meets CSA and UL standards for reliable circuit protection in various applications.
Median Price
$1.390
Lifecycle Status
Suppliers In-Stock
11
In-Stock Inventory
1k+
Bürklin Elektronik
1+ parts
100+ parts
$1.100
1k+ parts
$0.950
10k+ parts
-
Distrelec
Nova Conductors
$1.682
Rapid Electronics
$2.033
$1.830
Vyrian
LIBRA Elektronik GmbH
Manotoh
ComSIT Distribution GmbH
ACDS - Activité Composants Distribution Service
Holdelec - ElecDif-Pro
Quittner & Schimek s.r.o.
Aranea Global
$1.648
$1.582
Continental Prestige Electronics
Argo Parts USA
Allen Electronics Distributors
$1.790
$1.530
Aztec Data Supply Inc.
$19.130
Standard Data Resources (Excess)
Cyclops Electronics Ltd (Excess)
The high AC voltage rating of 250V makes this fuse suitable for a variety of electrical applications where a reliable fuse protection is required.
The compact size of 14.3mm ensures easy installation in tight spaces without compromising on performance.
The end cap terminal shape allows for secure and stable connection, ensuring proper functioning of the fuse in the circuit.
The dimensions of 14.3mm x 50.8mm provide a standard size for easy replacement and compatibility with a wide range of fuse holders.
With a rated current of 4A, this fuse can effectively protect against overcurrent and short circuit situations in various electrical systems.
The fast blow characteristic ensures quick response to overcurrent conditions, providing reliable protection to the connected equipment.
This electric fuse type offers a high level of circuit protection, safeguarding against electrical faults and ensuring the safety of the overall system.
The high breaking capacity of 200,000A makes this fuse suitable for handling high fault currents, ensuring efficient protection and reliability.
With a rated DC voltage of 250V, this fuse is suitable for DC applications where a durable and reliable fuse protection is required.
The versatile mounting feature allows for easy installation in various configurations, providing flexibility and convenience in different setups.
Compliant with industry standards such as CSA and UL, this fuse ensures high quality and reliability, making it a trustworthy choice for electrical protection needs.
Fuses KLB4 attributes and parameters. Explore more Fuses devices from Littelfuse
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KLB4 Circuit Protection trade compliance attributes, and parameters.
ECCN
EAR99
ECCN Governance
EAR
NSN
5920-00-116-2777, 5920001162777
NIIN
001162777
Littelfuse is a diversified industrial technology manufacturing company empowering a sustainable, connected, and safer world. Across more than 20 countries, and with approximately 18,000 global associates, we partner with customers to design and deliver innovative, reliable solutions. Serving over 100,000 end customers, our products are found in a variety of industrial, transportation, and electronics end markets—everywhere, every day. Headquartered in Chicago, Illinois, United States, Littelfuse was founded in 1927.
1N4148
General Semiconductor
RECTIFIER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: ROUND;
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;
LM358MX
Onsemi
OPERATIONAL AMPLIFIER; Temperature Grade: COMMERCIAL; Terminal Form: GULL WING; No. of Terminals: 8; Package Code: SOP; Package Shape: RECTANGULAR;
LM107H
Rochester Electronics
OPERATIONAL AMPLIFIER; Temperature Grade: MILITARY; Terminal Form: WIRE; No. of Terminals: 8; Package Code: TO-99; Package Shape: ROUND;
CRCW06030000Z0EAHP
Vishay Intertechnology
Vishay Intertechnology's CRCW06030000Z0EAHP is a 0 ohm jumper resistor with METAL GLAZE/THICK FILM tech. Operating temp range -55 to 155 °C, it's SMT package style makes it ideal for automotive applications meeting AEC-Q200 standard.
FDV303N
FDV303N by Onsemi is a N-CHANNEL FET with 25V DS Breakdown Voltage, 0.68A Drain Current, and 0.45 ohm On Resistance. Ideal for SWITCHING applications, it operates in ENHANCEMENT MODE at temperatures ranging from -55 to 150°C. Package style is SMALL OUTLINE with GULL WING terminals for surface mount assembly.
E8WSDC12-32.768KTR
Abracon
Abracon's E8WSDC12-32.768KTR crystal oscillator offers 20 ppm frequency tolerance, 144% stability, and 70000 ohm series resistance. Ideal for applications requiring precise timing at 0.032768 MHz, such as IoT devices and communication systems.
Gulf Semiconductor
LL4148
Kec
RECTIFIER DIODE; Terminal Position: END; Terminal Form: WRAP AROUND; No. of Terminals: 2; Surface Mount: YES; Package Shape: ROUND;
RC0402FR-0710KL
Yageo
Yageo's RC0402FR-0710KL is a 10000 ohm SMT fixed resistor with 1% tolerance, suitable for applications requiring a rated power dissipation of 0.0625 W. With a temperature coefficient of 100 ppm/°C, it operates b/w -55 to 155 °C, making it ideal for various electronic circuits.
Sinyork
RECTIFIER DIODE; Surface Mount: NO; Maximum Non Repetitive Peak Forward Current: .5 A; Maximum Output Current: .15 A; Maximum Repetitive Peak Reverse Voltage: 100 V; No. of Phases: 1;
MBRS340T3G
MBRS340T3G by Onsemi is a Schottky rectifier diode with a max forward voltage of 0.5V and output current of 4A. It operates b/w -65°C to 150°C, making it suitable for various applications requiring high-speed switching and low power loss in a small outline package. The diode's matte tin terminal finish and dual position make it ideal for surface mount PCB designs.
RN41N-I/RM
Microchip Technology
Microchip Technology's RN41N-I/RM is a telecom IC with 35 terminals, operating from -40 to 85°C. It has a supply voltage of 3.3V and is surface mountable in industrial applications. The package style is rectangular, measuring 13.2mm x 20.1mm with a seated height of 2.2mm, suitable for telecom interface functions.
ULN2803A
Texas Instruments
ULN2803A by Texas Instruments is a peripheral driver with 8 functions. It has a max supply voltage of 3V and can operate in temperatures ranging from -40 to 85°C. This IC is commonly used as a buffer or inverter based peripheral driver for various applications.
LM7805CT/NOPB
National Semiconductor
FIXED POSITIVE SINGLE OUTPUT STANDARD REGULATOR; No. of Terminals: 3; Terminal Form: THROUGH-HOLE; Maximum Voltage Tolerance: 5 %; Operating Temperature (TJ-Max): 125 Cel; Maximum Output Voltage-1: 5.25 V;
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.
2N2222A
Hi-tron Semiconductor
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 300 MHz; Maximum Power Dissipation (Abs): .5 W; Maximum Collector Current (IC): .8 A;
LL4148-GS08
Vishay Telefunken
Philips Components
ULN2803ADWG4
ULN2803ADWG4 by Texas Instruments is a peripheral driver with 8 functions, open-collector output characteristics, and built-in transient protections. It operates at temperatures ranging from -40 to 85°C and has a max supply voltage of 3V. Ideal for applications requiring sink current flow direction in a small outline package style.
ANL-80
Cooper Electronic Technologies
ELECTRIC FUSE; Mounting Feature: INLINE/HOLDER; Rated AC Voltage: 32 V; Rated DC Voltage: 80 V; Rated Current: 80 A; Terminal Shape: TAB/BLADE;
31.7601
Schurter Ag
ELECTRIC FUSE;
KTK-R-1
Eaton Corporation
KTK-R-1 fuse by Eaton Corporation is a 1A, 600V fast blow electric fuse with a rated breaking capacity of 200kA. It has a compact body size of 10.3mm x 38.1mm and is commonly used for circuit protection in inline or holder mounting applications.
TCF70
TCF70 by Eaton Corporation is a 70A electric fuse with a rated AC voltage of 600V. It has a time delay blow characteristic and can operate in temperatures ranging from -40°C to 80°C. This fuse, with its inline mounting feature and indicator, is commonly used for circuit protection in various applications.
3403.0155.24
Schurter Ag's 3403.0155.24 fuse is a TIME LAG type with 0.08A rated current and 250V AC/DC voltage, suitable for ELECTRIC FUSE circuit protection in various applications. With dimensions of 10.1mm x 3mm x 3mm and a rated breaking capacity of 200A, it offers reliable performance at temperatures ranging from -55°C to 125°C. Ideal for surface mount installations, this fuse has a nominal joule integral of 0.022J for efficient energy dissipation.
LPJ-400SPI
Eaton Corporation's LPJ-400SPI fuse, rated at 400A and 600V AC/300V DC, features a J class with time delay blow characteristic. With a compact body size of 53.6mm x 38.3mm, it is suitable for inline mounting applications requiring electric circuit protection and has built-in indicator features.
AGC-1-R
Cooper Industries
ELECTRIC FUSE; Mounting Feature: INLINE/HOLDER; Rated AC Voltage: 250 V; Rated Current: 1 A; Terminal Shape: END CAP; Reference Standard: CSA; UL;
SF-1206S050-2
SF-1206S050-2 by Bourns is a 1206 size surface mount fuse with a rated current of 0.5A and max operating temperature of 105°C. It is commonly used for circuit protection in electronic devices.
FWP-25A14F
ELECTRIC FUSE; Mounting Feature: INLINE/HOLDER; Rated AC Voltage: 700 V; Rated DC Voltage: 700 V; Rated Current: 25 A; Terminal Shape: END CAP;
PTS120630V016
Eaton Corporation's PTS120630V016 fuse has a trip time of 0.3s, rated voltage of 30V, and resistance of 4.5 ohm. Ideal for circuit protection in electronics with fast blow characteristic, surface mount feature, and TUV/UL reference standard compliance.
C14G40
The Eaton Corporation C14G40 fuse is a 40A electric fuse with a rated AC/DC voltage of 500V. It has a body length/diameter of 14mm and height of 51mm, featuring an end cap terminal shape. With a high breaking capacity of 120kA, it is ideal for inline/holder mounting in various applications requiring reliable circuit protection.
AJT60N
Mersen S A
AJT60N fuse by Mersen S A is a 60A, time delay electric fuse with 600V AC and 400V DC ratings. With a body length of 27mm and height of 60mm, it features an end cap terminal shape. Ideal for inline mounting applications, it has a high breaking capacity of 200kA and complies with CSA, IEC, and UL standards.
LPJ-200SPI
Eaton Corporation LPJ-200SPI fuse, rated 200A/600V, J class with time delay blow characteristic. Inline/holder mounting for circuit protection in applications requiring 300kA breaking capacity. Features indicator and meets CE, CSA, UL standards.
0326015.HXP
Littelfuse
Littelfuse 0326015.HXP fuse, rated 15A with 250V AC/DC voltage, offers time lag blow characteristic and 245J nominal joule integral. Ideal for circuit protection in applications requiring a fuse size of 3AB, such as inline mounting in electronic devices.
0458007.DR
0458007.DR by Littelfuse is a NANO fuse with 7A rated current, 63V DC voltage, and 20.48J nominal joule integral. It is used for circuit protection in applications requiring a trip time of 5s, such as automotive electronics and industrial equipment.
0251.062HAT1L
Littelfuse 0251.062HAT1L PICO fuse with 0.062A rated current, 125V AC/DC voltage, and very fast blow characteristic. Ideal for electric circuit protection in applications requiring a compact size fuse with through-hole mounting. Meets CSA, QPL, and UL standards for reliable performance.
FWP-50A22F
FWP-50A22F by Eaton Corporation is a 50 A electric fuse with a rated breaking capacity of 200000 A. It has a nominal joule integral of 155 J and can handle AC voltages up to 700 V. This fuse, measuring 22.2mm x 58mm, is commonly used for circuit protection in various applications.
AGU40
Littelfuse AGU40 fuse, rated 40A at 32V AC/DC, with body dimensions of 10.3187mm x 38.1mm. Ideal for circuit protection in applications requiring a 5AG size fuse, featuring END CAP terminals and INLINE/HOLDER mounting.
FNQ-12
FNQ-12 fuse by Eaton Corporation is a 12A MIDGET fuse with TIME DELAY blow characteristic. Rated for 500V AC/DC, it has a breaking capacity of 10kA. Ideal for circuit protection in various applications like industrial machinery and electrical equipment.
02183.15MXP
Littelfuse 02183.15MXP fuse, rated at 3.15A and 250V, with a trip time of 0.02s, is ideal for circuit protection in applications requiring a time lag blow characteristic. It has a nominal joule integral of 38.15J and is designed for use in inline/holder mounting configurations. Compliant with standards such as CCC, CE, CSA, UL, VDE, it ensures reliable performance in various electronic devices.
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KLB40
ELECTRIC FUSE; Mounting Feature: INLINE/HOLDER; Rated AC Voltage: 250 V; Rated DC Voltage: 250 V; Rated Current: 40 A; Terminal Shape: TAB/BLADE;
KLB400
ELECTRIC FUSE; Mounting Feature: INLINE/HOLDER; Rated AC Voltage: 250 V; Rated DC Voltage: 200 V; Rated Current: 400 A; Terminal Shape: TAB/BLADE;
KLB45
ELECTRIC FUSE; Mounting Feature: INLINE/HOLDER; Rated AC Voltage: 250 V; Rated DC Voltage: 250 V; Rated Current: 45 A; Terminal Shape: TAB/BLADE;
KLB450
ELECTRIC FUSE; Mounting Feature: INLINE/HOLDER; Rated AC Voltage: 250 V; Rated DC Voltage: 200 V; Rated Current: 450 A; Terminal Shape: TAB/BLADE;
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