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
ZENER DIODE; Terminal Position: END; Terminal Form: WRAP AROUND; No. of Terminals: 2; Surface Mount: YES; Package Shape: ROUND;
Median Price
$0.030
Lifecycle Status
Suppliers In-Stock
35
In-Stock Inventory
1k+
Chip1Stop
1+ parts
$0.078
100+ parts
-
1k+ parts
10k+ parts
Mouser Electronics
$0.180
$0.068
$0.043
$0.026
Newark
$0.347
$0.158
Arrow
Verical
Farnell
$0.023
EBV Elektronik
DigiKey
Avnet
$0.014
Elektronika Sales Private Limited
TTI
$0.015
Future Electronics
$0.019
RS (Exports)
$0.044
Element14
Rochester
$0.042
$0.035
$0.031
Bürklin Elektronik
$0.062
$0.037
$0.028
Digiode
$0.021
Nova Conductors
$0.048
TME
$0.100
$0.055
$0.040
$0.025
IBS Electronics
NAC Semi
Chip Stock
ComSIT Distribution GmbH
LIBRA Elektronik GmbH
Martec Srl
Vyrian
A&K Electronics
Rotakorn
Bristol Electronics
ACDS - Activité Composants Distribution Service
Euro-Tech
Anansix
Cogito LLC
Sensible Micro Corp
Prism Electronics
Aztec Data Supply Inc.
$0.012
Corphita
$0.020
Semicontronic
$0.027
AZTECH Wire
Modulus Dynamics
Argo Parts USA
$0.045
Netroflash
$0.047
Advanced Electronics
$0.178
$0.169
Perfect Parts
Eastek
Infinite Electronics LLP (Excess)
Continental Prestige Electronics
$0.038
Formix International (Excess)
QUARKTWIN TECHNOLOGY LTD
Allen Electronics Distributors
$0.060
$0.046
Assy Fe
Lixinc
GreenTree Electronics
UNI Independent Distributors
Authorized Procurement Solutions
Cyclops Electronics Ltd (Excess)
Futuretech Components
Robosynatics
$0.053
$0.052
Lucentia Tech
Glotronic Ltd.
Speed Components Ltd (Excess)
Corohmni
Supply Digital
Zener Diodes BZV55-C15,115 attributes and parameters. Explore more Zener Diodes devices from Nexperia
Case Connection:
Config:
Diode Element Material:
Diode Type:
JESD-30 Code:
JESD-609 Code:
Moisture Sensitivity Level (MSL):
No. of Elements:
No. of Terminals:
Maximum Operating Temperature:
Minimum Operating Temperature:
Package Body Material:
Package Shape:
Package Style (Meter):
Peak Reflow Temperature (C):
Polarity:
Maximum Power Dissipation:
Reference Standard:
Nominal Reference Voltage:
Surface Mount:
Technology:
Terminal Finish:
Terminal Form:
Terminal Position:
Maximum Time At Peak Reflow Temperature (s):
Maximum Voltage Tolerance:
Working Test Current:
BZV55-C15,115 Diodes trade compliance attributes, and parameters.
ECCN
EAR99
ECCN Governance
EAR
HTS
8541.10.00.50
SB
PCN Assembly/Origin - IMDS Support Chg 30/Nov/2020
PCN Packaging - All Dev Label Chgs 2/Aug/2020 Logo 10/Dec/2016
PCN Other - SOD27,66,68,80 Package 29/Jul/2013
Founded in 2017, Nexperia is a leading provider of semiconductors, based out of Nijmegen, the Netherlands. It is owned by the partially state-owned Chinese company Wingtech Technology. With factories in Hamburg, Germany and Greater Manchester, England, Nexperia is able to provide its clients with high quality semiconductor products quickly and efficiently.On November 8, 2023, Vishay and Nexperia BV announced that they have entered into an agreement whereby Vishay will acquire Nexperia’s wafer fabrication facility and operations located in Newport, South Wales, U.K. for approximately $177,000 in cash, subject to customary post-closing adjustments. On November 8, 2023, Vishay remitted $8,750 to an escrow account as a deposit for the acquisition. Such amount is included within "Purchase of and deposits for businesses, net of cash acquired" on the consolidated statement of cash flows. To effect the transaction, Vishay will acquire a 100% interest in the legal entity Neptune 6 Limited, and its wholly-owned operating subsidiary, Nexperia Newport Limited, which owns and operates the Newport facility. The closing of the transaction is subject to U.K. government review and customary closing conditions, and is expected to occur in the first quarter of 2024.
CEO
Xuezheng Zhang (Wing)
CFO
Stefan Tilger
COO
Achim Kempe
Hamburg
Fabrication
Fab Initiation
1981
Germany
Wafer Capacity
36,000
Manchester (8-inch line)
2017
Australia
Hazelgrove
12,000
Manchester (6-inch line)
1998
22,000
Shanghai Fab
2022
China
Shanghai
Nexperia Newport
UK
Newport
34,000
1N4148
Daco Semiconductor
RECTIFIER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: ROUND;
PAP-06V-S
J S T Mfg
PAP-06V-S by J S T Mfg is a 6-contact BOARD CONNECTOR with 94V-0 UL Flammability Code. It has FEMALE contacts, CRIMP termination, and comes WITH CABLE ASSEMBLY for CABLE mounting applications.
LM358N
Intersil
OPERATIONAL AMPLIFIER; Temperature Grade: COMMERCIAL; Terminal Form: THROUGH-HOLE; No. of Terminals: 8; Package Code: DIP; Package Shape: RECTANGULAR;
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
Vpt Components
NPN; Configuration: SINGLE; Surface Mount: NO; Maximum Power Dissipation (Abs): 1 W; Maximum Collector Current (IC): .8 A; Maximum Power Dissipation Ambient: .5 W;
SS14
Fairchild Semiconductor
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
1N4148WS
General Instrument
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
CR0805-FX-10R0ELF
Bourns
Bourns CR0805-FX-10R0ELF is a SMT fixed resistor with 10 ohm resistance, 1% tolerance, and 0.125 W power dissipation. Ideal for applications requiring a temperature range of -55 to 155 °C, such as automotive electronics and industrial control systems.
AMS1117-3.3
Advanced Monolithic Systems
AMS1117-3.3 by Advanced Monolithic Systems is a fixed positive single output LDO regulator with 1A max output current, 3% voltage tolerance, and 1.3V dropout voltage. Ideal for applications requiring stable 3.3V supply in compact designs due to its small outline package and excellent load regulation of 0.025%.
Aeroflex/metelics
NPN; Configuration: SINGLE; Surface Mount: NO; Maximum Collector Current (IC): .8 A; Package Shape: ROUND; Transistor Application: SWITCHING;
LIS3DHTR
STMicroelectronics
LIS3DHTR by STMicroelectronics is a 16-terminal accelerometer with output range of 0.18-1.62V, ideal for motion sensing applications. Operating temperature ranges from -40 to 85°C, making it suitable for various environments. With a compact square package body of 3x3mm and digital voltage output type, it is commonly used in surface mount designs.
SSL-LXA228SRC-TR11
Lumex
SSL-LXA228SRC-TR11 by Lumex is a 1.9mm SINGLE COLOR LED with peak wavelength of 660nm and max forward current of 0.03A. Ideal for applications requiring SUPER RED light emission, such as indicator lights in electronic devices due to its clear lens and surface mounting feature.
Bytesonic Electronics
BAT54C-7-F
Diodes Incorporated
BAT54C-7-F by Diodes Inc. is a Schottky rectifier diode with common cathode, 2 elements, and max forward voltage of 0.24V. Ideal for applications requiring fast reverse recovery time of 0.005 us, such as in small outline packages for surface mount technology at temperatures ranging from -65 to 150°C.
MBR0520L-T1
Won-top Electronics
MBR0520L-T1 by Won-top Electronics is a Schottky rectifier diode with 20V peak reverse voltage and 0.5A output current. It is a single-config, surface-mount diode in a small outline package, suitable for applications requiring high-speed switching and low forward voltage drop. Operating temperature range from -65°C to 125°C makes it ideal for various electronic circuits.
C0805C104K5RACTU
KEMET Corporation
KEMET C0805C104K5RACTU is a ceramic capacitor with 0.1uF capacitance and 50V rated DC voltage. It has X7R temperature characteristics, -55 to 125 °C operating range, and ±10% tolerance. Ideal for surface mount applications in electronics requiring compact size and reliable performance.
Kec
RECTIFIER DIODE; Surface Mount: NO; Maximum Repetitive Peak Reverse Voltage: 100 V; Maximum Non Repetitive Peak Forward Current: 2 A; Config: SINGLE; Maximum Operating Temperature: 200 Cel;
Texas Instruments
2N2222A by Texas Instruments is a small signal NPN bipolar junction transistor (BJT) with a max collector-emitter voltage of 40V and a max collector current of 0.8A. It is commonly used for switching applications due to its fast turn on/off times (35ns/285ns) and high transition frequency (300MHz).
SS495A-SP
Honeywell Sensing And Control
SS495A-SP by Honeywell is a magnetic field sensor with 10.5V max supply voltage, 3" body width, and 1.5% linearity. Ideal for applications requiring a Hall effect sensor with -40 to 150°C operating temperature range, such as position sensing in automotive or industrial systems.
Silicon Standard
BZX84C5V6
Good-ark Electronics
ZENER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 3; Surface Mount: YES; Package Shape: RECTANGULAR;
BZV55C12
Eic Semiconductor
BZX85C11
Fagor Electronica S Coop
ZENER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: ROUND;
Excel (Suzhou) Semiconductor
ZENER DIODE; Surface Mount: YES; Maximum Voltage Tolerance: 7.1 %; Config: SINGLE; Maximum Dynamic Impedance: 40 ohm; Nominal Reference Voltage: 5.6 V;
Central Semiconductor
BZX84C5V1
MMSZ5232B-7-F
MMSZ5232B-7-F by Diodes Inc. is a Zener diode with 3V reverse test voltage, 20mA working current, and 5uA max reverse current. It is ideal for voltage regulation in electronic circuits due to its small outline package and unidirectional polarity. With a max power dissipation of 0.37W and operating temperature range from -65°C to 150°C, it ensures reliable performance in various applications.
Vishay Telefunken
Lite-on Semiconductor
BZX84-C15,235
NXP Semiconductors
NXP Semiconductors' BZX84-C15,235 Zener Diode has a 15V nominal reference voltage with a max reverse current of 0.05 uA. It operates in temperatures ranging from -65 to 150 °C and features a max power dissipation of 0.25 W. Ideal for applications requiring precise voltage regulation in compact electronic devices.
SZ1SMB5919BT3G
Onsemi
SZ1SMB5919BT3G by Onsemi is a Zener diode with 5.6V nominal voltage, 66.9mA test current, and 2 ohm dynamic impedance. Ideal for applications requiring precise voltage regulation in automotive electronics due to AEC-Q101 compliance and -65 to 150 °C operating temperature range.
BZX84-C10,235
BZX84-C10,235 by NXP Semiconductors is a Zener diode with a working test current of 5 mA and max reverse current of 0.2 uA. It is used for voltage regulation in various electronic applications.
Elcoma
ZENER DIODE; Surface Mount: YES; No. of Elements: 1; Terminal Finish: Tin/Lead (Sn/Pb); JESD-609 Code: e0; Maximum Power Dissipation: .3 W;
1N5239B-TR
SZMMSZ4705T1G
SZMMSZ4705T1G by Onsemi is a Zener diode with 18V nominal reference voltage, 5% max voltage tolerance, and 0.05mA working test current. It is ideal for automotive applications due to AEC-Q101 standard compliance and -55 to 150 °C operating temperature range.
1N5338B
ZENER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: UNSPECIFIED;
BZX85/C11
BZX85/C11 Zener Diode by Bytesonic Electronics has a nominal reference voltage of 11V, max power dissipation of 1.3W, and working test current of 20mA. It is used in applications requiring precise voltage regulation such as power supplies and voltage references.
Cheng-yi Electronic
MM3Z18VT1G
Nexperia
ZENER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
Shanghai Lunsure Electronic Technology
ZENER DIODE; Surface Mount: YES; Maximum Dynamic Impedance: 60 ohm; No. of Elements: 1; Working Test Current: 5 mA; Maximum Voltage Tolerance: 5.8 %;
Partstack™ will investigate all reported instances of potential suspect/counterfeit part listings.
NCR320U
LED DISPLAY DRIVER; Terminal Finish: Tin (Sn); Moisture Sensitivity Level (MSL): 1; JESD-609 Code: e3;
74AVC8T245BQ
BUS TRANSCEIVER; Temperature Grade: AUTOMOTIVE; Terminal Form: NO LEAD; No. of Terminals: 24; Package Code: HVQCCN; Package Shape: RECTANGULAR;
PMEG120G10ELR
PESD2V8R1BSF
BAS16TH
PMEG060T050ELPE
BCP53H
Small Signal Bipolar Transistors; Terminal Finish: Tin (Sn); Moisture Sensitivity Level (MSL): 1; Maximum Time At Peak Reflow Temperature (s): 30; Peak Reflow Temperature (C): 260; JESD-609 Code: e3;
74AUP1G17GX4
BUFFER; Moisture Sensitivity Level (MSL): 1; JESD-609 Code: e4; Terminal Finish: Nickel/Palladium/Gold (Ni/Pd/Au); Peak Reflow Temperature (C): 260; Maximum Time At Peak Reflow Temperature (s): 30;
BUK7V4R2-40H
Power Field-Effect Transistors; Terminal Finish: Tin (Sn); JESD-609 Code: e3; Moisture Sensitivity Level (MSL): 1;
74HC4053PW
SPDT; Temperature Grade: AUTOMOTIVE; No. of Terminals: 16; Package Code: TSSOP; Package Shape: RECTANGULAR; Surface Mount: YES;
BUK9K13-60RA
Power Field-Effect Transistors; JESD-609 Code: e3; Terminal Finish: Tin (Sn); Moisture Sensitivity Level (MSL): 1;
74LVC1G14GX4
INVERTER; Terminal Finish: Nickel/Palladium/Gold (Ni/Pd/Au); Maximum Time At Peak Reflow Temperature (s): 30; JESD-609 Code: e4; Peak Reflow Temperature (C): 260; Moisture Sensitivity Level (MSL): 1;
BUK6D22-30E
LSF0102DC
Level Translators; Moisture Sensitivity Level (MSL): 1; Terminal Finish: Nickel/Palladium/Gold/Silver (Ni/Pd/Au/Ag); JESD-609 Code: e4;
BAS21TH
PESD2CANFD24V-T
MJD32C
Power Bipolar Transistors; Maximum Time At Peak Reflow Temperature (s): 30; JESD-609 Code: e3; Moisture Sensitivity Level (MSL): 1; Terminal Finish: Tin (Sn); Peak Reflow Temperature (C): 260;
NXS0104PW-Q100
BUS TRANSCEIVER; JESD-609 Code: e4; Terminal Finish: Nickel/Palladium/Gold/Silver (Ni/Pd/Au/Ag); Moisture Sensitivity Level (MSL): 1;
74LV1T08GW
AND GATE; Temperature Grade: AUTOMOTIVE; Terminal Form: GULL WING; No. of Terminals: 5; Package Code: TSSOP; Package Shape: RECTANGULAR;
PMEG120G20ELR
BZV55C5V1
Micro Commercial Components
Sensitron Semiconductor
Bkc Semiconductors
Philips Components
BZV55-C5V1
Spc Technology/ Multicomp
Continental Device India
Vishay Semiconductors
Sangdest Microelectronics (Nanjing)
Secos
North American Philips Discrete Products Div
ZENER DIODE; Surface Mount: YES; No. of Elements: 1; Maximum Voltage Tolerance: 5 %; JESD-609 Code: e0; Terminal Finish: Tin/Lead (Sn/Pb);
Microsemi
ZENER DIODE; Surface Mount: YES; Maximum Dynamic Impedance: 60 ohm; Maximum Voltage Tolerance: 5 %; Nominal Reference Voltage: 5.1 V; Maximum Power Dissipation: .5 W;
Changzhou Galaxy Century Microelectronics
Forward International Electronics
ZENER DIODE; Surface Mount: YES; Maximum Operating Temperature: 175 Cel; Maximum Power Dissipation: .5 W; No. of Elements: 1; Config: SINGLE;
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