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.
Choose from over than a million of proven quality materials. Over 300 manufacturers are presented. From renowned major international players to small independent companies with a proven track record in local markets.
Featured manufacturers
STK400-300 by Onsemi is an audio amplifier IC with 3 functions, 22 terminals at 2.54mm pitch. It utilizes hybrid technology and is ideal for audio and video amplification applications.
Median Price
-
Lifecycle Status
Suppliers In-Stock
2
In-Stock Inventory
1k+
Vyrian
1+ parts
100+ parts
1k+ parts
10k+ parts
Digiode
Kulean Microsystems
SupplyDigital Components
Problanco Electronics
TANS Electronics
Corphita
UHIMA Technologies
Corohmni
Having multiple functions allows this amplifier to adapt to different audio setups and requirements, providing versatility and flexibility in usage.
Being specifically designed as an audio amplifier ensures optimal performance and quality for audio playback or amplification, making it a suitable choice for audio applications.
The ample number of terminals enables easy connection to various audio sources and devices, enhancing compatibility and ease of use in diverse setups.
Having all terminals in a single position simplifies the wiring and installation process, making it more convenient for users to set up the amplifier efficiently.
The hybrid technology used in this amplifier combines the benefits of different technologies, potentially leading to improved performance, efficiency, and reliability in audio amplification.
The standard terminal pitch of 2.54 mm allows for compatibility with commonly available connectors and components, making it easier to integrate this amplifier into existing systems and setups.
Audio & Video Amplifiers STK400-300 attributes and parameters. Explore more Audio & Video Amplifiers devices from Onsemi
General IC Type:
No. of Functions:
No. of Terminals:
Package Equivalence Code:
Qualification:
Sub-Category:
Surface Mount:
Technology:
Terminal Pitch:
Terminal Position:
STK400-300 General Purpose ICs trade compliance attributes, and parameters.
ECCN
EAR99
ECCN Governance
EAR
HTS
8542.33.00.01
SB
8542.33.00.00
Established in 1999, Onsemi is a leading global provider of power and image-sensing technologies. They are dedicated to building a better future for the automotive, industrial, cloud, medical, and IoT markets. Onsemi's core technologies include analog, digital, and mixed-signal products that offer innovative solutions for advanced automotive systems; highly reliable power management products for industrial applications; low-cost imaging solutions for medical equipment and consumer electronics; and robust communication architectures for the Internet of Things (IoT).
President, CEO
Hassane El-Khoury
Executive VP, CFO, Treasurer
Thad Trent
Senior VP
Ross F. Jatou
Aizu Fab
Fabrication
Fab Initiation
1995
Japan
Aizu Wakamatsu
Wafer Capacity
52,000
Si/EPI Fab
2018
Czech Republic
Rožnov pod Radhoštěm
10,000
Expansion Phase 1 for SiC / EPI
2019
14,500
Expansion Phase 2 for SiC / EPI
2024
SiC Fab
2022
USA
Hudson
Bucheon
2013
South Korea
61,000
ISMF - Malaysia
1990
Malaysia
Seremban
95,000
Roznov Device Fab
1987
80,000
Fab 10
2002
East Fishkill
15,000
Burlington
1986
Canada
Gresham
1998
45,000
Bucheon 150mm
2000
50,000
Rochester
1983
Nampa
Pennsylvania
1997
Mountain Top
36,000
LL4148
Taitron Components
RECTIFIER DIODE; Terminal Position: END; Terminal Form: WRAP AROUND; No. of Terminals: 2; Surface Mount: YES; Package Shape: ROUND;
1N4148
Continental Device India
RECTIFIER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: ROUND;
BSS138BK,215
NXP Semiconductors
NXP Semiconductors' BSS138BK,215 is a N-CHANNEL FET with 0.36A max drain current and 0.42W power dissipation. Ideal for applications requiring single configuration and surface mount technology, such as enhancement mode operation in temperatures up to 150°C.
Daco Semiconductor
BAV99
Promax-johnton
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 3; Surface Mount: YES; Package Shape: RECTANGULAR;
LM358MX
ROHM
OPERATIONAL AMPLIFIER; Temperature Grade: COMMERCIAL; Terminal Form: GULL WING; No. of Terminals: 8; Package Code: LSOP; Package Shape: RECTANGULAR;
LAN8720AI-CP-TR
Microchip Technology
LAN8720AI-CP-TR by Microchip is an Ethernet transceiver with 100 Mbps data rate, operating at -40 to 85 °C. It features a 3.3 V supply voltage, 54 mA supply current, and TS 16949 screening level. Ideal for network interfaces in industrial applications due to its compact square package and low profile design.
2N2222A
Raytheon Semiconductor
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 250 MHz; Minimum DC Current Gain (hFE): 100; Maximum Turn On Time (ton): 35 ns;
2N7002
Vishay Intertechnology
2N7002 by Vishay Intertechnology is a N-CHANNEL FET with 60V DS Breakdown Voltage, 0.115A Drain Current, and 7.5 ohm On Resistance. Ideal for SWITCHING applications due to its SINGLE configuration with BUILT-IN DIODE. Operates in ENHANCEMENT MODE, suitable for surface mount with GULL WING terminals.
LM555CM
Fairchild Semiconductor
PULSE; RECTANGULAR; Temperature Grade: COMMERCIAL; No. of Terminals: 8; Package Code: SOP; Package Shape: RECTANGULAR; Surface Mount: YES;
LM555CN
Harris Semiconductor
PULSE; RECTANGULAR; Temperature Grade: COMMERCIAL; No. of Terminals: 8; Package Code: DIP; Package Shape: RECTANGULAR; Surface Mount: NO;
Onsemi
SS14
General Instrument
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
LM7805CT
Texas Instruments
LM7805CT by Texas Instruments is a fixed positive single output standard regulator with an output voltage of 5V and max current of 1.5A. It operates b/w 0-125°C, has a dropout voltage of 2V, and offers excellent line/load regulation for various electronic applications.
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.
Infineon Technologies
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 300 MHz; Maximum Power Dissipation (Abs): .5 W; Maximum Collector Current (IC): .8 A;
06035C103KAT2A
KYOCERA AVX
06035C103KAT2A by KYOCERA AVX is a SMT ceramic capacitor with 0.01uF capacitance and 50V URdc. It has X7R temperature characteristics, -55 to 125 °C operating range, and 10% tolerance. Ideal for applications requiring compact surface mount capacitors with stable performance in a wide temperature range.
STM32H753IIK6
STMicroelectronics
STM32H753IIK6 by STMicroelectronics is a 32-bit microcontroller with 176 terminals, operating at up to 48 MHz. It features 20-Ch 16-Bit ADCs, 2-Ch 12-Bit DACs, and peripherals like CAN, ETHERNET, and USB. Ideal for industrial applications requiring high-speed processing and extensive connectivity options.
Kingwell Technonlogy
EL2470CN
Elantec
VIDEO AMPLIFIER; Terminal Form: THROUGH-HOLE; No. of Terminals: 14; Package Shape: RECTANGULAR; JESD-30 Code: R-PDIP-T14; Qualification: Not Qualified;
LM380N-8/NOPB
National Semiconductor
AUDIO AMPLIFIER; Temperature Grade: COMMERCIAL; Terminal Form: THROUGH-HOLE; No. of Terminals: 8; Package Code: DIP; Package Shape: RECTANGULAR;
TDF8599BTH/N1CY
NXP Semiconductors' TDF8599BTH/N1CY is a Class D audio amplifier with 150W output power, 1% harmonic distortion, and 0.02 kHz nominal bandwidth. Ideal for industrial applications, this rectangular package IC operates b/w -40 to 85°C with a supply voltage range of 8-24V.
NJM2073D
New Japan Radio
NJM2073D by New Japan Radio is an audio amplifier IC with 2 channels, offering a nominal output power of 0.65W and gain of 44dB. It operates in industrial temperature range from -40 to 85°C, making it suitable for various audio and video amplification applications. The package style is in-line with a rectangular shape and terminal pitch of 2.54mm.
SSM2518CPZ-RL
Analog Devices
Analog Devices' SSM2518CPZ-RL is a Class D audio amplifier with 2.5W output power, 10% harmonic distortion, and 0.02 kHz bandwidth. Ideal for audio applications requiring a compact chip carrier package with surface mount capability and quad terminal position. Operating temperature range from -40 to 85°C makes it suitable for industrial use.
TDA1905
TDA1905 by STMicroelectronics is an audio amplifier IC with 5.5W output power, 10% harmonic distortion, and 40dB gain. It operates on a supply voltage range of 4-30V and has a nominal bandwidth of 0.04kHz. This rectangular package style IC is ideal for audio amplification applications in various electronic devices.
TDA8932BT/N2,118
TDA8932BT/N2,118 by NXP Semiconductors is a small outline audio amplifier with 2 channels and a nominal output power of 55W. It operates at a min supply voltage of 5V and has a max seated height of 2.65mm. This amplifier is commonly used in industrial applications requiring high-quality audio amplification.
PAM8302AADCR
Diodes Inc. PAM8302AADCR is a Class D audio amplifier with 2.5/5V power supplies, 8 terminals, and -40 to 85°C operating temperature range. It comes in a small outline package for surface mount applications in industrial-grade audio and video amplifiers.
MAX9719DEBE-T
Maxim Integrated
MAX9719DEBE-T by Maxim Integrated is a 2-channel audio amplifier with 1.4W output power, BICMOS technology, and 6dB gain. Operating b/w -40 to 85°C, it requires 2.7-5.5V supplies for applications in industrial-grade audio and video systems due to its compact grid array package design.
SI8244BB-D-IS1R
Silicon Labs
CLASS D AUDIO AMPLIFIER; Maximum Time At Peak Reflow Temperature (s): NOT SPECIFIED; Peak Reflow Temperature (C): NOT SPECIFIED;
TDA7388
TDA7388 by STMicroelectronics is a Class AB audio amplifier with 10% harmonic distortion, delivering 26W nominal output power at 14.4V. With 25 terminals and a compact rectangular package style, it's ideal for audio and video amplification applications requiring high-quality sound performance in a small form factor.
MAX98400AETX+
Analog Devices' MAX98400AETX+ is a Class D audio amplifier with 44W output power, ideal for industrial applications. Operating b/w -40 to 85°C, it features 2 channels and CMOS technology. With a supply voltage range of 8-28V and compact chip carrier package, it offers high gain at 20.1dB for audio and video amplification needs.
LME49811TB/NOPB
AUDIO AMPLIFIER; Temperature Grade: INDUSTRIAL; Terminal Form: THROUGH-HOLE; No. of Terminals: 15; Package Code: ZIP; Package Shape: RECTANGULAR;
IR4311MTRPBF
IR4311MTRPBF by Infineon is a Class D audio amplifier with 12V power supply, operating from -40 to 100°C. It comes in a chip carrier package with 15 terminals and is surface mountable. Ideal for industrial applications requiring high-quality audio amplification in a compact form factor.
MAX9736AETJ+
CLASS D AUDIO AMPLIFIER; Temperature Grade: INDUSTRIAL; Terminal Form: NO LEAD; No. of Terminals: 32; Package Code: HVQCCN; Package Shape: SQUARE;
PGA2505IDBR
PGA2505IDBR by Texas Instruments is an audio preamplifier with gain of 25.5 dB. It operates on +-5V power supplies, has 24 terminals in a small outline package, and withstands industrial temperature range. Ideal for audio and video amplification applications requiring precise signal processing in compact setups.
LM4995SD/NOPB
AUDIO AMPLIFIER; Temperature Grade: INDUSTRIAL; Terminal Form: NO LEAD; No. of Terminals: 8; Package Code: VSON; Package Shape: SQUARE;
TDA7052
Philips Components
AUDIO AMPLIFIER; Terminal Form: THROUGH-HOLE; No. of Terminals: 8; Package Shape: RECTANGULAR; JESD-30 Code: R-PDIP-T8; Gain: 40 dB;
SI8244BB-D-IS1
CLASS D AUDIO AMPLIFIER; Terminal Finish: NICKEL PALLADIUM GOLD; JESD-609 Code: e4; Maximum Time At Peak Reflow Temperature (s): 40; Moisture Sensitivity Level (MSL): 2A; Peak Reflow Temperature (C): 260;
TPA701DGN
TPA701DGN by Texas Instruments is an audio amplifier IC with a nominal output power of 0.7W and harmonic distortion of 0.5%. It operates in industrial temperature range (-40 to 85°C) and has a small outline package style suitable for surface mount applications. Ideal for compact audio amplification in various electronic devices.
Partstack™ will investigate all reported instances of potential suspect/counterfeit part listings.
STK402-070
Sanyo Electric
STK402-070 by Sanyo Electric is a 60W audio amplifier IC with 2 channels, 10% harmonic distortion, and 30dB gain. Its rectangular package style with flange mount is ideal for audio applications requiring high power output in the 0.05 kHz bandwidth range.
STK400-220
AUDIO AMPLIFIER; No. of Terminals: 22; Technology: HYBRID; Surface Mount: NO; No. of Functions: 3; Package Equivalence Code: SIP22,.2;
STK400-510
AUDIO AMPLIFIER; Terminal Form: GULL WING; No. of Terminals: 22; Package Shape: RECTANGULAR; Nominal Output Power: 70 W; No. of Functions: 1;
STK400-280
AUDIO AMPLIFIER; No. of Terminals: 22; No. of Functions: 3; Terminal Pitch: 2.54 mm; Technology: HYBRID; Terminal Position: SINGLE;
STK400-480
AUDIO AMPLIFIER; Terminal Form: GULL WING; No. of Terminals: 22; Package Shape: RECTANGULAR; Nominal Bandwidth: .05 kHz; JESD-30 Code: R-XSFM-G22;
STK400-260
AUDIO AMPLIFIER; No. of Terminals: 22; Package Equivalence Code: SIP22,.2; Terminal Pitch: 2.54 mm; Qualification: Not Qualified; Technology: HYBRID;
STK400-520
AUDIO AMPLIFIER; Terminal Form: GULL WING; No. of Terminals: 22; Package Shape: RECTANGULAR; Nominal Bandwidth: .05 kHz; Nominal Output Power: 80 W;
STK400-100
AUDIO AMPLIFIER; No. of Terminals: 22; Package Equivalence Code: SIP22,.2; Terminal Pitch: 2.54 mm; Terminal Position: SINGLE; No. of Functions: 3;
STK400-230
AUDIO AMPLIFIER; No. of Terminals: 22; Package Equivalence Code: SIP22,.2; Surface Mount: NO; Qualification: Not Qualified; Terminal Position: SINGLE;
STK400-310
AUDIO AMPLIFIER; Terminal Form: GULL WING; No. of Terminals: 22; Package Shape: RECTANGULAR; Nominal Bandwidth: .05 kHz; Terminal Position: SINGLE;
STK400-470
AUDIO AMPLIFIER; Terminal Form: GULL WING; No. of Terminals: 22; Package Shape: RECTANGULAR; Technology: HYBRID; Harmonic Distortion: .08 %;
STK400-250
AUDIO AMPLIFIER; No. of Terminals: 22; Terminal Position: SINGLE; Surface Mount: NO; Qualification: Not Qualified; No. of Functions: 3;
STK400-500
AUDIO AMPLIFIER; Terminal Form: GULL WING; No. of Terminals: 22; Package Shape: RECTANGULAR; Package Body Material: UNSPECIFIED; No. of Functions: 1;
STK400-210
AUDIO AMPLIFIER; No. of Terminals: 22; Technology: HYBRID; Surface Mount: NO; Terminal Pitch: 2.54 mm; No. of Functions: 3;
STK400-450
AUDIO AMPLIFIER; Terminal Form: GULL WING; No. of Terminals: 22; Package Shape: RECTANGULAR; Nominal Bandwidth: .05 kHz; Harmonic Distortion: .08 %;
STK400-270
AUDIO AMPLIFIER; No. of Terminals: 22; Terminal Pitch: 2.54 mm; Surface Mount: NO; No. of Functions: 3; Qualification: Not Qualified;
STK400-080
AUDIO AMPLIFIER; No. of Terminals: 22; No. of Functions: 3; Terminal Pitch: 2.54 mm; Technology: HYBRID; Qualification: Not Qualified;
STK400-110
AUDIO AMPLIFIER; No. of Terminals: 22; Terminal Pitch: 2.54 mm; Package Equivalence Code: SIP22,.2; Surface Mount: NO; Terminal Position: SINGLE;
STK400-240
AUDIO AMPLIFIER; No. of Terminals: 22; Terminal Position: SINGLE; Package Equivalence Code: SIP22,.2; Terminal Pitch: 2.54 mm; Surface Mount: NO;
STK400-300
AUDIO AMPLIFIER; Terminal Form: THROUGH-HOLE; No. of Terminals: 22; Package Shape: RECTANGULAR; Package Style (Meter): FLANGE MOUNT; Technology: HYBRID;
Supply Digital Components
$106.00
$54.25
$11.90
$7.29
Quantity
12,000 In-Stock
Total price ≈ $80,197.29
© 2023 All rights reserved