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
Circuit Protection Type:
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Rated DC Voltage:
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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.
2N2222A
Onsemi
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 300 MHz; Maximum Collector Current (IC): .8 A; No. of Terminals: 3;
MMBT3904-7-F
Diodes Incorporated
Diodes Inc. MMBT3904-7-F is a NPN BJT transistor for switching applications. Features include VCEsat of 0.3V, hFE of 30, and IC of 0.2A. With a max operating temp of 150°C, it's ideal for small outline SMT designs in automotive electronics.
BSS138PS,115
Nexperia
N-CHANNEL; Configuration: SEPARATE, 2 ELEMENTS WITH BUILT-IN DIODE; Surface Mount: YES; No. of Elements: 2; No. of Terminals: 6; Minimum DS Breakdown Voltage: 60 V;
LM358MX
National Semiconductor
OPERATIONAL AMPLIFIER; Temperature Grade: COMMERCIAL; Terminal Form: GULL WING; No. of Terminals: 8; Package Code: SOP; Package Shape: RECTANGULAR;
NE555D
STMicroelectronics
PULSE; RECTANGULAR; Temperature Grade: COMMERCIAL; No. of Terminals: 8; Package Code: SOP; Package Shape: RECTANGULAR; Surface Mount: YES;
Texas Instruments
LM358MX by Texas Instruments is a dual operational amplifier with a max input offset voltage of 9000 uV. It has a nominal voltage of 5V and a min voltage gain of 15000. This op amp is commonly used in applications requiring amplification and signal conditioning.
1N4148
Bkc Semiconductors
RECTIFIER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: ROUND;
USB2514BI-AEZG
Microchip Technology
USB2514BI-AEZG by Microchip is a BUS CONTROLLER IC with 36 terminals, operating at 3.3V, supporting I2C, SMBUS, and USB buses. It has a clock frequency of up to 24MHz and can withstand industrial temperatures from -40°C to 85°C. This chip carrier package is surface mountable and suitable for various applications requiring USB connectivity.
2N7002
Plessey Semiconductors Discrete Components Div
Other Transistors;
SS14
Sangdest Microelectronics (Nanjing)
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
SMBJ18CA
Semtech
TRANS VOLTAGE SUPPRESSOR DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
LM555CN
Rca Solid State
Analog Waveform Generation Functions; Temperature Grade: COMMERCIAL; No. of Terminals: 8; Package Code: DIP; Package Shape: RECTANGULAR; Surface Mount: NO;
BAV99
Temic Semiconductors
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 3; Surface Mount: YES; Package Shape: RECTANGULAR;
OHN3140U
Optek Technology
MAGNETIC FIELD SENSOR,HALL EFFECT; Mounting Feature: THROUGH HOLE MOUNT; No. of Terminals: 3; Output Type: ANALOG CURRENT; Package Shape or Style: RECTANGULAR; Output Range: 25mA;
FDLL4148
Fairchild Semiconductor
RECTIFIER DIODE; Terminal Position: END; Terminal Form: WRAP AROUND; No. of Terminals: 2; Surface Mount: YES; Package Shape: ROUND;
LL4148
Semtech Electronics
Fagor Electronica S Coop
4554
Jw Miller Magnetics
Other Semiconductors;
MBRS360T3G
MBRS360T3G by Onsemi is a Schottky rectifier diode with a max forward voltage of 0.63V and a max output current of 3A. It is designed for applications requiring high-speed switching and low power loss, making it suitable for use in various electronic devices.
DS18B20+
Maxim Integrated
TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL; Mounting Feature: THROUGH HOLE MOUNT; No. of Terminals: 3; Package Shape or Style: RECTANGULAR; Maximum Operating Current: 1.5 mA; Package Equivalence Code: SIP3,.1,50;
0451002.MRL
Littelfuse
Littelfuse 0451002.MRL Nano fuse with 2A current, 125V rated voltage, and 0.53J joule integral. Ideal for circuit protection in electronics due to very fast blow characteristic and surface mounting feature. Compliant with CE, CSA, CUL, PSE, TUV, UL standards.
0215002.MXP
Littelfuse 0215002.MXP fuse, rated 2A and 250V, features time lag blow characteristic with trip delay of 0.01s. With dimensions of 5x20mm, it is used for circuit protection in applications requiring a nominal joule integral of 11.68J and max operating temperature of 125°C.
045401.5MR
Littelfuse 045401.5MR Nano Fuse has a rated current of 1.5A and slow blow characteristic, with dimensions of 6.1mm x 2.69mm x 2.69mm. It is used for electric circuit protection at max operating temperature of 125°C, suitable for surface mount applications in various industries.
FNQ-R-12
Cooper Industries
ELECTRIC FUSE; Mounting Feature: INLINE/HOLDER; Rated AC Voltage: 600 V; Rated DC Voltage: 300 V; Rated Current: 12 A; Terminal Shape: END CAP;
FWX-35A
ELECTRIC FUSE; Mounting Feature: INLINE/HOLDER; Rated AC Voltage: 250 V; Rated DC Voltage: 250 V; Rated Current: 35 A; Terminal Shape: TAB/BLADE;
0456020.ER
Littelfuse 0456020.ER fuse has a rated current of 20A and nominal joule integral of 18J, suitable for circuit protection in applications requiring very fast blow characteristic at 125V AC/DC. With dimensions of 10.1mm x 3.12mm x 3.12mm, it is designed for surface mount installation with a rated breaking capacity of 100A and pre-arcing rating of 18 A2/s.
KLDR015.TXP
KLDR015.TXP by Littelfuse is a 15A time delay electric fuse with 200.5J nominal joule integral and 600V AC/300V DC rated voltage. It features nickel terminal finish, CSA/UL reference standards, and is commonly used for inline circuit protection applications.
ATM30
Mersen S A
Mersen S A's ATM30 fuse, rated 30A and 600V, features fast blow characteristic with 100kA breaking capacity. It is a midget size fuse with end cap terminal shape, suitable for electric circuit protection in inline/holder mounting applications.
ATM10
The Mersen S A ATM10 fuse is a 10A, 600V fast-blow electric fuse with a midget size and end cap terminal shape. It has a rated breaking capacity of 100kA and is suitable for inline/holder mounting in various applications requiring circuit protection. Compliant with CSA and UL standards, it measures 10mm x 38mm.
ATM-20LP
ELECTRIC FUSE; Mounting Feature: INLINE/HOLDER; Rated DC Voltage: 32 V; Rated Current: 20 A; Terminal Shape: TAB/BLADE; Minimum Operating Temperature: -40 Cel;
0297003WXNV
Littelfuse 0297003WXNV fuse with 9.4J joule integral, 3A rated current, and 32V DC voltage. Ideal for electric circuit protection in applications requiring a compact size of 10.9mm x 3.8mm x 8.8mm and operating temperatures from -40°C to 125°C.
LP-CC-1-1/2
ELECTRIC FUSE; Mounting Feature: INLINE/HOLDER; Rated AC Voltage: 600 V; Rated DC Voltage: 300 V; Rated Current: 1.5 A; Terminal Shape: END CAP;
0452005.MRL
Littelfuse 0452005.MRL is a NANO fuse with 5A rated current and 125V AC/DC voltage. With slow blow characteristic, it offers circuit protection with 53.72J nominal joule integral. Ideal for applications requiring surface mount fuses like electronics and industrial equipment.
LP-CC-6
ELECTRIC FUSE; Mounting Feature: INLINE/HOLDER; Rated AC Voltage: 600 V; Rated DC Voltage: 150 V; Rated Current: 6 A; Terminal Shape: END CAP;
0287002.PXCN
Littelfuse 0287002.PXCN fuse has a Nominal Joule Integral of 1.4 J and Trip Time of 0.02s, with dimensions 19.1mm x 5.1mm x 12.3mm. Rated for 2A current, it's used in circuit protection applications with rated breaking capacity of 1000A at max operating temp of 125°C and min temp -40°C.
FRS-R-100
Eaton Corporation
Eaton Corporation's FRS-R-100 fuse, rated at 100A and 600V AC/DC, features a time delay blow characteristic. With a compact body size of 34mm x 200mm, it is suitable for inline mounting applications requiring electric circuit protection. Compliant with CE, CSA, and UL standards, this RK5 class fuse has a high breaking capacity of 200kA.
0451005.MRL
Littelfuse 0451005.MRL Nano fuse with 5A current rating, 125V AC/DC voltage, and 5.566J joule integral. Ideal for circuit protection in electronics, featuring very fast blow characteristic and surface mounting feature. Compliant with CE, CSA, CUL, PSE, TUV, UL standards.
FNQ-3-1/2
Eaton Corporation's FNQ-3-1/2 fuse, rated 3.5A and 500V, features a time delay blow characteristic for electric circuit protection. With a compact size of 10.41mm x 38.1mm, it is ideal for inline mounting applications requiring a high breaking capacity of 10000A. Compliant with CE, CSA, and UL standards, it is commonly used in MIDGET fuse class circuits for industrial equipment protection.
SR-5-1A-AP
Eaton Corporation's SR-5-1A-AP fuse has a rated current of 1A and nominal joule integral of 7.5J, suitable for circuit protection with a blow characteristic of time delay. With a max operating temperature of 125°C and rated AC voltage of 250V, it is ideal for applications requiring reliable electrical fuse protection in various industries.
3413.0002.24
Schurter Ag
Schurter Ag's 3413.0002.24 fuse is a 3.2x1.6mm surface mount electric fuse with rated current of 0.05A and rated AC voltage of 125V, suitable for circuit protection in applications requiring very fast blow characteristic at temperatures ranging from -55 to 90°C.
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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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