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.
2N7002
Formosa Microsemi
N-CHANNEL; Configuration: SINGLE; Surface Mount: YES; Maximum Power Dissipation (Abs): .225 W; Field Effect Transistor Technology: METAL-OXIDE SEMICONDUCTOR; Maximum Drain Current (Abs) (ID): .115 A;
2N2222A
STMicroelectronics
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 300 MHz; Maximum Power Dissipation (Abs): .5 W; Maximum Collector Current (IC): .6 A;
M39029/56-351
TE Connectivity
TE Connectivity's M39029/56-351 is a CRIMP contact type backshell accessory with rated voltage of 115V. It operates b/w -65 to 175 °C, suitable for MIL-C-39029/56 connectors with wire gauge ranging from 28 to 22 AWG. Ideal for military applications requiring female contacts and copper alloy material.
1N4148
American Power Devices
RECTIFIER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: ROUND;
LM317TG
Onsemi
ADJUSTABLE POSITIVE SINGLE OUTPUT STANDARD REGULATOR; No. of Terminals: 3; Terminal Form: THROUGH-HOLE; Minimum Input-Output Voltage Differential: 3 V; Qualification Status: Not Qualified; No. of Functions: 1;
LM358MX
ROHM
OPERATIONAL AMPLIFIER; Temperature Grade: COMMERCIAL; Terminal Form: GULL WING; No. of Terminals: 8; Package Code: LSOP; Package Shape: RECTANGULAR;
M39029/58-360
TE Connectivity's M39029/58-360 is a CRIMP terminal backshell for 22-28 AWG wires, rated at 5A. Ideal for male contacts in Mil-Spec applications, it offers a cross-section area of 0.34 mm2 and ensures secure connections in demanding environments.
LM358AN
Samsung
OPERATIONAL AMPLIFIER; Temperature Grade: COMMERCIAL; Terminal Form: THROUGH-HOLE; No. of Terminals: 8; Package Code: DIP; Package Shape: RECTANGULAR;
1N4148WS
Jiangsu Changjiang Electronics Technology
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
Rectron
Itt Semiconductor
N-CHANNEL; Configuration: SINGLE; Surface Mount: YES; Package Body Material: PLASTIC/EPOXY; Field Effect Transistor Technology: METAL-OXIDE SEMICONDUCTOR; Package Shape: RECTANGULAR;
CL10B104KB8NNNC
Samsung Electro-mechanics
CL10B104KB8NNNC by Samsung Electro-mechanics is a ceramic capacitor with capacitance of 0.1uF and rated DC voltage of 50V. It has a negative tolerance of 10% and temperature coefficient of 15ppm/°C, suitable for surface mount applications in various electronic devices. With dimensions of 1.6mm x 0.8mm x 0.9mm, it operates b/w -55 to 125 °C providing stable performance in compact designs.
LM555CN
Rca Solid State
Analog Waveform Generation Functions; Temperature Grade: COMMERCIAL; No. of Terminals: 8; Package Code: DIP; Package Shape: RECTANGULAR; Surface Mount: NO;
SMBJ18CA
Protek Devices
TRANS VOLTAGE SUPPRESSOR DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
Renesas Electronics
M24308/2-1F
Tyco Electronics Amp
D SUBMINIATURE CONNECTOR; Option: GENERAL PURPOSE; Contact Gender: FEMALE; IEC Conformity: NO; Mixed Contacts: NO; Empty Shell: NO;
National Semiconductor
261
Micronetics
Other Interface ICs; Temperature Grade: MILITARY; Terminal Form: FLAT; No. of Terminals: 14; Package Code: DFP; Package Shape: SQUARE;
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 250 MHz; Maximum Power Dissipation (Abs): .5 W; Maximum Collector Current (IC): .6 A;
Changzhou Starsea Electronics
0451015.MRL
Littelfuse
0451015.MRL by Littelfuse is a NANO-sized electric fuse with a rated current of 15A and rated voltage of 65V. It has a very fast blow characteristic and can withstand temperatures from -55°C to 125°C. This surface mount fuse is commonly used for circuit protection in various applications.
0FLU.440T
0FLU.440T fuse by Littelfuse is a fast blow electric fuse with a rated current of 0.44A and rated voltage of 1000V, suitable for inline mounting applications. It has a high breaking capacity of 10kA and terminal shape in end cap design, meeting CSA and UL standards for reliable circuit protection.
029707.5WXNV
Littelfuse 029707.5WXNV is a MINI fuse with 7.5A rated current, 82J nominal joule integral, and 0.03s trip time. Ideal for electric circuit protection in automotive applications due to its compact size (10.9mm x 3.8mm x 8.8mm) and high breaking capacity of 1000A at rated voltage of 32V DC.
PTS120660V005
Eaton Corporation
Eaton Corporation's PTS120660V005 fuse has a trip time of 1.5s, rated voltage of 60V, and resistance of 50Ω. It is used for electric circuit protection in applications requiring fast blow characteristic and surface mounting feature.
0313.600MXP
0313.600MXP by Littelfuse is a 3AG fuse with 0.6A rated current and 250V rated voltage, featuring a time lag blow characteristic. With a trip time of 5s and nominal joule integral of 4J, it provides supplemental circuit protection in applications requiring an electric fuse with CE, CSA, and UL reference standards compliance.
KTK-R-2
Cooper Electronic Technologies
ELECTRIC FUSE; Mounting Feature: INLINE/HOLDER; Rated AC Voltage: 600 V; Rated Current: 2 A; Terminal Shape: END CAP; Dimensions: 10.3mm x 38.1mm;
0313.600HXP
The Littelfuse 0313.600HXP is a 3AG fuse with a rated current of 0.6 A and a max operating temperature of 125°C. It has a time lag blow characteristic and is commonly used for circuit protection in applications such as inline holders.
0691-0050-01
Bel Fuse
Bel Fuse 0691-0050-01 is a MICRO fuse with 0.05A rated current and 250V AC voltage. It offers fast blow characteristic, 50A breaking capacity, and operates b/w -55°C to 125°C. Ideal for circuit protection in various applications requiring electric fuses.
ATDR1/2
Mersen S A
Mersen S A's ATDR1/2 fuse, rated 0.5A with 600V AC & 300V DC, features time delay blow characteristic and inline mounting. With a body size of 10.4mm x 38.1mm, it offers circuit protection up to 200kA, meeting CSA and UL standards for electrical applications.
BK/ABC-2-R
Cooper Industries
ELECTRIC FUSE; Mounting Feature: INLINE/HOLDER; Rated AC Voltage: 250 V; Rated DC Voltage: 125 V; Rated Current: 2 A; Terminal Shape: END CAP;
The Eaton Corporation's KTK-R-2 fuse, rated at 2A and 600V, features a fast blow characteristic with a body size of 10.3mm x 38.1mm. Designed for circuit protection, it has a rated breaking capacity of 200kA and is suitable for inline/holder mounting in various applications compliant with CE, CSA, and UL standards.
ATDR6
Mersen S A's ATDR6 fuse, rated 6A with 600V AC & 300V DC voltage, features time delay blow characteristic. Measuring 10.4mm x 38.1mm, it has a rated breaking capacity of 200kA and is ideal for electric circuit protection in various applications.
SC-40
ELECTRIC FUSE; Mounting Feature: INLINE/HOLDER; Rated AC Voltage: 480 V; Rated DC Voltage: 300 V; Rated Current: 40 A; Terminal Shape: END CAP;
0257010.PXPV
Littelfuse 0257010.PXPV ATO fuse with 10A current, 32V rated voltage, and fast blow characteristic. Ideal for electric circuit protection in UL-standard applications with dimensions of 19.05mm x 5.08mm x 12.19mm and a pre-arcing rating of 115 A2/s.
0297010WXNV
Littelfuse 0297010WXNV fuse has 93J nominal joule integral, 10A rated current, and 32V DC voltage. With dimensions of 10.9mm x 3.8mm x 8.8mm, it is used for electric circuit protection in applications requiring a max operating temperature of 125°C and min of -40°C.
KTK-R-15
ELECTRIC FUSE; Mounting Feature: INLINE/HOLDER; Rated AC Voltage: 600 V; Rated Current: 15 A; Terminal Shape: END CAP; Blow Characteristic: FAST;
PV-20A10F
Eaton Corporation's PV-20A10F fuse, rated at 20 A and 1000 V DC, offers a nominal joule integral of 34 J with a body size of 10x38mm. With a rated breaking capacity of 50000 A, it is suitable for circuit protection in various applications due to its wide operating temperature range (-40 to 90 °C) and compliance with CCC, IEC, and UL standards.
KTK-R-5
ELECTRIC FUSE; Mounting Feature: INLINE/HOLDER; Rated AC Voltage: 600 V; Rated Current: 5 A; Terminal Shape: END CAP; Fuse Class: CC;
LP-CC-6/10
Eaton Corporation LP-CC-6/10 fuse, rated 600V AC/0.6A, with time delay blow characteristic. Inline/holder mounting for circuit protection in CE/CSA/UL compliant applications. Dimensions: 10mm x 38.1mm, body height 38mm, and rated breaking capacity of 200kA.
39501600000
39501600000 by Littelfuse is a TE5 fuse with 125V rated voltage, 0.16A current, and 0.0037J nominal joule integral. It is used for circuit protection in applications requiring fast blow characteristic, UL reference standard compliance, and 100A rated breaking capacity.
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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;
Supply Digital Components
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