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
V375B28E300BG by Vicor is a 300W DC-DC regulated power supply module with adjustable output voltage from 2.8V to 30.8V. It features high efficiency at 87.5%, UL, TUV, CE approvals, and operates b/w -10°C to 100°C. Ideal for applications requiring reliable power conversion in compact spaces with stringent performance requirements.
Median Price
$242.996
Lifecycle Status
Suppliers In-Stock
2
In-Stock Inventory
1k+
Nova Conductors
1+ parts
100+ parts
-
1k+ parts
10k+ parts
Vyrian
Ampacity Inc.
$1.500
AZTECH Wire
$16.107
Continental Prestige Electronics
$238.136
Argo Parts USA
Netroflash
$230.846
$225.987
Having UL, TUV, and CE approvals ensures that this power supply module meets high safety and quality standards, making it a reliable choice for various applications.
The ability to trim or adjust the output voltage allows for flexibility in meeting specific voltage requirements, making it versatile for different applications.
With a high main output efficiency of 87.5%, this power supply module ensures minimal power loss during conversion, leading to energy savings and less heat generation.
The flange mount package style allows for easy and secure mounting, ensuring stability and reliability in various setups.
The high maximum output voltage of 30.8 V provides flexibility in powering various devices that require higher voltage levels.
With a nominal input voltage of 375 V, this power supply module can handle a wide range of input voltages, making it suitable for different power sources.
Capable of delivering a maximum total power output of 300 W, this power supply module can power multiple devices simultaneously, making it a versatile solution for various applications.
Power Supply Modules V375B28E300BG attributes and parameters. Explore more Power Supply Modules devices from Vicor
Additional Features:
Other IC type:
Approvals (V):
Main Output Efficiency:
Height:
Maximum Input Voltage:
Minimum Input Voltage:
Nominal Input Voltage:
JESD-30 Code:
JESD-609 Code:
Length:
Maximum Line Regulation:
Maximum Load Regulation:
No. of Functions:
No. of Outputs:
No. of Terminals:
Maximum Operating Temperature:
Minimum Operating Temperature:
Maximum Output Current:
Maximum Output Voltage:
Minimum Output Voltage:
Nominal Output Voltage:
Package Body Material:
Package Shape:
Package Style (Meter):
Qualification:
Maximum Seated Height:
Sub-Category:
Surface Mount:
Technology:
Temperature Grade:
Terminal Finish:
Terminal Form:
Terminal Position:
Maximum Total Power Output:
Trim or Adjustable Output (V):
Width (mm):
V375B28E300BG Other Function Semiconductors trade compliance attributes, and parameters.
ECCN
EAR99
ECCN Governance
EAR
PCN Design/Specification - Multiple Devices Product Improvement 20/Mar/2019
Vicor is the leader in high-performance power modules, enabling customer innovation with easy-to-deploy modular power system solutions for power delivery networks that provide the highest density and efficiency from source to point-of-load. We continuously advance the density, efficiency and power delivery capabilities of our power modules by staying on the forefront of distribution architectures, conversion topologies and packaging technology. Vicor serves customers in enterprise and high-performance computing, industrial equipment and automation, robotics, UAVs, vehicles and transportation, satellites, and aerospace and defense.
BSS138-7-F
Diodes Incorporated
Diodes Inc. BSS138-7-F is a N-channel FET with 50V DS breakdown voltage, 0.2A max drain current, and 3.5 ohm RDS(on). Ideal for switching applications in small outline packages with matte tin finish, operating up to 150°C peak reflow temp.
SMBJ18CA
Leshan Radio
TRANS VOLTAGE SUPPRESSOR DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
LM317T
Sgs-ates Componenti Electronici S P A
Other Regulators; No. of Terminals: 3; JESD-609 Code: e0; Terminal Position: SINGLE; Adjustability: ADJUSTABLE; Maximum Load Regulation (%): 1.5 %;
1N4148WT
Sangdest Microelectronics (Nanjing)
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: FLAT; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
BSS138
Philips Semiconductors
N-CHANNEL; Configuration: SINGLE; Surface Mount: YES; Maximum Power Dissipation (Abs): .36 W; Operating Mode: ENHANCEMENT MODE; Maximum Operating Temperature: 150 Cel;
LL4148
Changzhou Galaxy Century Microelectronics
RECTIFIER DIODE; Terminal Position: END; Terminal Form: WRAP AROUND; No. of Terminals: 2; Surface Mount: YES; Package Shape: ROUND;
2N7002
Supertex
N-CHANNEL; Configuration: SINGLE WITH BUILT-IN DIODE; Surface Mount: YES; Maximum Power Dissipation (Abs): .2 W; No. of Elements: 1; Maximum Feedback Capacitance (Crss): 5 pF;
1N4148
Rochester Electronics
RECTIFIER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: ROUND;
Grande Electronics
BAV99
Vishay Telefunken
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 3; Surface Mount: YES; Package Shape: RECTANGULAR;
Semiconductors
RECTIFIER DIODE; Surface Mount: NO; Maximum Output Current: .15 A; Maximum Forward Voltage (VF): 1 V; Maximum Operating Temperature: 200 Cel; No. of Elements: 1;
Weitronic Enterprise
OHN3020U
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;
LM358D-T
NXP Semiconductors
LM358D-T by NXP Semiconductors is a dual operational amplifier with 70dB CMRR, 1000kHz unity gain bandwidth, and 9000uV max input offset voltage. Widely used in commercial applications due to its small outline package and low bias current of 0.5uA.
Changzhou Starsea Electronics
M39029/58-360
Fct Electronic
CONNECTOR ACCESSORY; IEC Conformity: NO; Alternate Contact Sources: MILITARY; MIL Conformity: YES; Contact Gender: MALE; MIL-Connector Accessory Name: CONTACT;
Fairchild Semiconductor
N-CHANNEL; Configuration: SINGLE WITH BUILT-IN DIODE; Surface Mount: YES; Maximum Power Dissipation (Abs): .36 W; Operating Mode: ENHANCEMENT MODE; Qualification: Not Qualified;
1N4148WS
Dc Components
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
PIC18F4550-I/P
Microchip Technology
PIC18F4550-I/P by Microchip Technology is an 8-bit microcontroller with a max clock frequency of 48 MHz. It features 13-Ch 10-Bit ADC channels and USB connectivity, making it ideal for industrial applications requiring low power consumption and high-speed data processing. With 2048 RAM bytes and 256 Data EEPROM size, this CMOS technology-based microcontroller offers versatile performance in various embedded systems.
Semitronics
CC6-2405SF-E
TDK
The TDK CC6-2405SF-E is a 6W DC-DC regulated power supply module with adjustable output voltage (4.75-6V) and high efficiency (90%). Ideal for industrial applications, it offers protection against over current and over voltage, operates in temperatures ranging from -40 to 85°C, and has a max output current of 1.2A.
LDH-45B-350W
Mean Well Enterprises
DC-DC REGULATED POWER SUPPLY MODULE;
DCP020505U/1KE4
Texas Instruments
DCP020505U/1KE4 by Texas Instruments is a small outline DC-DC unregulated power supply module with 12 terminals. It operates b/w -40 to 85°C, providing an output voltage range of 4.75V to 5.25V at a max current of 0.018A. Ideal for industrial applications requiring compact and efficient power solutions.
PAH100S48-24/V
Tdk-lambda
The TDK-Lambda PAH100S48-24/V is a 100W DC-DC regulated power supply module with adjustable output voltage from 14.4V to 26.4V, ideal for applications requiring a nominal input voltage of 48V. With a compact design measuring 61mm x 57.9mm x 12.95mm, it offers a max output current of 4.2A and utilizes hybrid technology for efficient power delivery in various electronic systems.
NXJ1S1212MC-R13
Murata Manufacturing
ROF-78E5.0-0.5SMD-R
Recom Power
ROF-78E5.0-0.5SMD-R by Recom Power is a 2.5W DC-DC regulated power supply module with 87% efficiency, 4.75V min output voltage, and 5V nominal output voltage. Ideal for industrial applications requiring a compact (12.5mm x 13.5mm x 4.5mm) surface-mount power solution with short circuit and overcurrent protection features.
HWS600-24/HD
The TDK HWS600-24/HD power supply module offers a nominal output voltage of 24V and max output current of 27A. With approvals from IEC, EN, CSA, UL, CE, it provides over current and over voltage protection. Ideal for applications requiring high efficiency (85%) in a wide temperature range (-40 to 71 °C), this hybrid technology device is trimmable with adjustable output voltages.
CC3-2412SF-E
DC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: OTHER; No. of Terminals: 7; Package Code: DIP; Package Shape: RECTANGULAR; Surface Mount: NO;
TSR0.5-2450SM
Traco Electronic Ag
Traco Electronic Ag's TSR0.5-2450SM power supply module offers an adjustable output voltage, with a max efficiency of 94%. Operating b/w -40 to 90°C, it provides a nominal output voltage of 5V and can handle up to 0.5A current. Ideal for various applications requiring reliable power sources in compact spaces.
TEN40-2411WI
TEN40-2411WI by Traco Electronic Ag is a DC-DC regulated power supply module with 88% efficiency. It offers an output voltage range of 4.5V to 5.5V and a max output current of 8A, making it ideal for applications requiring stable power sources in compact spaces. With a hybrid technology design and adjustable output feature, this module is suitable for various electronic devices needing reliable power solutions.
DCP020505U
DCP020505U by Texas Instruments is a 2W DC-DC unregulated power supply module with 80% efficiency. It operates b/w -40 to 85°C, offering a voltage range of 4.75V to 5.25V for industrial applications. This small outline package features push-pull switcher config and dual terminals in a compact design suitable for surface mount assembly.
STMGFS302412-N3
Cosel
The Cosel STMGFS302412-N3 power supply module has a main output efficiency of 89%, max output current of 2.5A, and total power output of 30W. With UL approval, it operates b/w -20°C to 70°C and is ideal for DC-DC regulated power supply applications in various industries.
MPM-05-5
Mean Well Enterprises' MPM-05-5 power supply module offers 78% efficiency, 0.03535 Vrms ripple voltage, and 1 A max output current. With approvals from ANSI, CSA, CE, and more, it is ideal for applications requiring a regulated 5 V output in a compact MICROELECTRONIC ASSEMBLY package.
CC10-2412SF-E
TDK CC10-2412SF-E is a 10W DC-DC regulated power supply module with 12V nominal output voltage. It offers adjustable output from 11.4V to 15V, ideal for applications requiring precise power control. With a compact rectangular package style and hybrid technology, it suits various electronic devices needing efficient power management in limited space.
HWS150A-24/A
AC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: COMMERCIAL; Package Shape: RECTANGULAR; Surface Mount: NO; Maximum Input Voltage: 265 V; Terminal Position: UNSPECIFIED;
SDN10-24-100P
Solar Electronics Company
SDN10-24-100P by Solar Electronics is a 240W power supply module with adjustable output (22.5-28.5V) and high efficiency (88%). It features thermal, short circuit, overload, and overvoltage protection, suitable for microelectronic assemblies in various applications. Approved by EN, UL, CUL, IEC, and CE standards for reliable performance in industrial settings.
SQ24S04120-PS00G
Power-one
DC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: INDUSTRIAL; No. of Terminals: 8; Package Shape: RECTANGULAR; Surface Mount: NO; JESD-609 Code: e4;
CFM21M120-S
Cincon Electronics
AC-DC REGULATED POWER SUPPLY MODULE; Maximum Time At Peak Reflow Temperature (s): NOT SPECIFIED; Peak Reflow Temperature (C): NOT SPECIFIED;
LPT42
Artesyn Embedded Technologies
AC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: COMMERCIAL; No. of Terminals: 10; Package Code: XMA; Package Shape: RECTANGULAR; Surface Mount: NO;
LGA80D-00DADJJ
Artesyn Embedded Technologies LGA80D-00DADJJ power supply module offers 95.5% efficiency, 40A max output current, and 200W total power output. Ideal for applications requiring a compact, high-performance DC-DC regulated power supply with thermal, over/under voltage protection. Suitable for various industries due to its versatile features and approvals from IEC, EN, CSA, UL.
Partstack™ will investigate all reported instances of potential suspect/counterfeit part listings.
V375B24C300BL
Vicor
V375B24C300BL by Vicor is a 300W DC-DC regulated power supply module with 88% efficiency. It offers an adjustable output voltage range from 2.4V to 26.4V, making it ideal for various applications requiring high power density and reliability in industrial settings. Approved by UL, TUV, and CE, this rectangular flange mount package features a hybrid technology design suitable for temperatures ranging from -20°C to 100°C.
V375A28T600BL
DC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: INDUSTRIAL; No. of Terminals: 9; Package Code: DFM; Package Shape: RECTANGULAR; Surface Mount: NO;
V375A28T600BL2
Vicor's V375A28T600BL2 is a 600W power supply module with a nominal input voltage of 375V and a max output voltage of 30.8V. It features adjustable output, voltage-mode control, and operates in industrial temperature grade. This module is suitable for applications requiring high power and reliable performance.
V375A28T600BL3
V375A5C400BL
DC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: OTHER; No. of Terminals: 9; Package Code: DFM; Package Shape: RECTANGULAR; Surface Mount: NO;
V375A5C400BL2
V375A5C400BL3
V375C48T75BG
DC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: INDUSTRIAL; No. of Terminals: 7; Package Shape: RECTANGULAR; Surface Mount: NO; Minimum Input Voltage: 250 V;
V375C48T75BG2
DC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: INDUSTRIAL; No. of Terminals: 7; Package Shape: RECTANGULAR; Surface Mount: NO; Package Body Material: UNSPECIFIED;
V375C48T75BG3
DC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: INDUSTRIAL; No. of Terminals: 7; Package Shape: RECTANGULAR; Surface Mount: NO; JESD-30 Code: R-XDFM-P7;
V375C24T150BL2
DC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: INDUSTRIAL; No. of Terminals: 7; Package Shape: RECTANGULAR; Surface Mount: NO; Maximum Output Current: 6.25 A;
V375B28E300B3
DC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: OTHER; No. of Terminals: 9; Package Shape: RECTANGULAR; Surface Mount: NO; Minimum Output Voltage: 2.8 V;
V375B28E300BF3
DC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: OTHER; No. of Terminals: 9; Package Shape: RECTANGULAR; Surface Mount: NO; Trim or Adjustable Output (V): YES;
V375B28E300BG2
DC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: OTHER; No. of Terminals: 9; Package Shape: RECTANGULAR; Surface Mount: NO; Maximum Load Regulation: .2 %;
V375B28E300BG3
DC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: OTHER; No. of Terminals: 9; Package Shape: RECTANGULAR; Surface Mount: NO; Maximum Input Voltage: 425 V;
V375B28E300BL3
DC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: OTHER; No. of Terminals: 9; Package Shape: RECTANGULAR; Surface Mount: NO; Height: 13.5 mm;
V375B28E300BN2
DC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: OTHER; No. of Terminals: 9; Package Shape: RECTANGULAR; Surface Mount: NO; Maximum Operating Temperature: 100 Cel;
V375B28E300BS3
DC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: OTHER; No. of Terminals: 9; Package Shape: RECTANGULAR; Surface Mount: NO; Maximum Seated Height: 13.95 mm;
V375B28E300B
V375B28E300BK
DC-DC REGULATED POWER SUPPLY MODULE; Temperature Grade: OTHER; No. of Terminals: 9; Package Shape: RECTANGULAR; Surface Mount: NO; 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