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
Phoenix Contact 1754465 is a UL-approved BARRIER STRIP TERMINAL BLOCK with 3 ways, rated for 12A current and 250V voltage. It supports wire gauge up to 12 AWG and wire cross section of 1 mm2. Ideal for secure connections in various applications requiring reliable terminal blocks.
Median Price
$3.171
Lifecycle Status
Suppliers In-Stock
48
In-Stock Inventory
1k+
Bürklin Elektronik
1+ parts
$1.580
100+ parts
-
1k+ parts
10k+ parts
Mouser Electronics
$2.700
Arrow
$2.803
$2.281
Master Electronics
$3.102
$2.210
$2.070
$2.030
Farnell
$3.240
$1.900
$1.790
Sager
$3.410
$2.320
$2.200
RS Americas
$3.490
$2.510
DigiKey
$3.640
$2.445
Element14
$3.940
$3.430
$3.100
Newark
$4.440
$3.760
$3.140
Verical
$0.949
$0.850
Boersig
RS (Exports)
$2.677
Distrelec
Freelance Electronics
$0.800
TodayComponents
$1.980
$1.600
Component Electronics Inc.
$2.310
$1.730
$1.500
Nova Conductors
$2.322
Rapid Electronics
$2.361
$1.942
Quotebeam
$3.010
Carlton-Bates
$3.030
IBS Electronics
$4.481
$3.192
$2.990
$2.932
Electro Sonic
$2.890
$2.370
$2.250
VNN
Shortec Electronics
Vyrian
NAC Semi
$1.320
$1.200
Dynamic Solutions
Mil-Aero Solutions, Inc.
LIBRA Elektronik GmbH
Semtec, LLC
Q Components
J2 Sourcing AB
Semi Source
DF Sales Co.
Holdelec - ElecDif-Pro
Inventory MP
Bristol Electronics
Amar Radio Corporation
Connector Distribution Corp
Right Parts Inc.
EMSNET
Microfarads
Prism Electronics
Elcom Components
Van Brakel Electronic
Specialty Parts & Electronic Components, Inc. (S.P.E.C.)
Semicontronic
$1.340
$1.306
$1.300
Abianca Electronics
$2.117
$2.032
Corohmni
$2.182
Continental Prestige Electronics
$2.276
Argo Parts USA
Advanced Electronics
$2.369
Ampacity Inc.
$2.920
Neutron USA
$19.990
Aztec Data Supply Inc.
Perfect Parts
Authorized Procurement Solutions
Abacus Technologies
GreenTree Electronics
Speed Components Ltd (Excess)
The connector mounting type makes it easy to connect and disconnect wires quickly and efficiently.
Having UL safety approval ensures that the product meets rigorous safety standards, providing peace of mind for users.
Support for 12 AWG wire gauge means that this terminal block can handle thicker wires, providing versatile compatibility.
The rated voltage of 250V indicates that the terminal block can handle typical electrical voltages, ensuring reliable performance.
Barrier strip terminal blocks provide secure connections and prevent accidental contact with live wires, enhancing safety.
Supporting a wire cross-section of 1mm2, this terminal block can accommodate a range of wire sizes for flexibility in installation.
Screw fastening method allows for secure connections that are easy to install and maintain.
With a rated current of 12A, this terminal block is suitable for medium to high current applications, offering reliable performance.
Having 3 ways allows for multiple connections to be made within a single terminal block, saving space and simplifying wiring setups.
Terminals & Terminal Blocks 1754465 attributes and parameters. Explore more Terminals & Terminal Blocks devices from Phoenix Contact
Product Type:
Additional Features:
Safety Compliance:
Rated Voltage:
Rated Current:
Wire Gauge:
Wire Cross Section:
Total Ways:
Total Decks:
Total Rows:
Mounting Style:
Fastening Style:
1754465 Terminals & Terminal Blocks trade compliance attributes, and parameters.
ECCN
EAR99
ECCN Governance
EAR
HTS
8536.69.40.40
SB
8536.69
NSN
5935-01-522-0029, 5935015220029
NIIN
015220029
PCN Design/Specification - Design of the material displacement chg 18/JUL/2022 Multiple Devices Approval Markings 19/Nov/2018
PCN Packaging - Multiple Devices 11/Jun/2015
Electrification has been the core expertise of Phoenix Contact since its foundation in 1923. In the 21st century, Phoenix Contact is committed to empowering the “All Electric Society,” a future in which energy from renewable resources is available in sufficient quantities and at affordable prices. In addition to the consistent generation and use of renewable energies, reducing the primary energy demand through efficiency measures and creating intelligent and networked systems are key to a sustainable future. To be able to base renewable energy use on demand, solutions and technologies for electrification, networking, and automation are needed in order to realize sector coupling. Phoenix Contact focuses on solutions for the “All Electric Society.” More than 20,000 employees and strong growth through the broad portfolio and focus on the solutions business are helping to make this a reality.
ULN2003ADR
Texas Instruments
ULN2003ADR by Texas Instruments is a NPN BJT with 7 elements, max IC of 0.5A, and VCEsat of 1.6V. Ideal for switching applications in small outline packages with Gull Wing terminals.
ULN2803ADWRG4
ULN2803ADWRG4 by Texas Instruments is a peripheral driver with 8 functions, open-collector output, and built-in transient protection. It operates b/w -40 to 85 °C with a max supply voltage of 3 V. Ideal for applications requiring sink current flow direction in a small outline package style.
1N4148
Onsemi
RECTIFIER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: ROUND;
LM317AEMP/NOPB
LM317AEMP/NOPB by Texas Instruments is an adjustable positive single output standard regulator with a max output voltage of 37V and a max output current of 1.5A. It operates in temperatures ranging from -40°C to 125°C, making it suitable for various applications requiring precise voltage regulation in a compact package.
Frontier Electronics
SMBJ18CA
Db Lectro
TRANS VOLTAGE SUPPRESSOR DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
Synsemi
LM555CM
Renesas Electronics
Analog Waveform Generation Functions; Temperature Grade: COMMERCIAL; No. of Terminals: 8; Package Code: SOP; Package Shape: RECTANGULAR; Surface Mount: YES;
BSS138
Taitron Components
N-CHANNEL; Configuration: SINGLE WITH BUILT-IN DIODE; Surface Mount: YES; Maximum Drain-Source On Resistance: 3.5 ohm; Maximum Drain Current (ID): .2 A; Peak Reflow Temperature (C): NOT SPECIFIED;
FT232RL-REEL
FTDI
FTDI's FT232RL-REEL is a bus controller with 28 terminals, operating at 3.3V to 5.25V. It supports USB, VBUS, and UART buses with a data transfer rate of 60MBps. Ideal for industrial applications due to its CMOS technology and compatibility with RS232, RS422, and RS485 standards.
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.
2N7002-7-F
Diodes Incorporated
Diodes Inc. 2N7002-7-F is a N-channel FET with 60V DS breakdown voltage, 0.115A max drain current, and 13.5 ohm RDS(on). Ideal for switching applications in enhancement mode operation. Features Gull Wing terminals, small outline package style, and operates up to 150°C.
LP2950CDT-3.3G
LP2950CDT-3.3G by Onsemi is a fixed positive single output LDO regulator with a nominal output voltage of 3.3V and max output current of 0.1A. It has a small outline package style, operates at temperatures ranging from -40 to 125 °C, and is suitable for applications requiring low dropout voltage and precise voltage regulation in electronic circuits.
LM358AN
NXP Semiconductors
OPERATIONAL AMPLIFIER; Temperature Grade: COMMERCIAL; Terminal Form: THROUGH-HOLE; No. of Terminals: 8; Package Code: DIP; Package Shape: RECTANGULAR;
MBR0530T1G
MBR0530T1G by Onsemi is a Schottky rectifier diode with a max forward voltage of 0.375V and output current of 0.5A. It operates b/w -65°C to 125°C, making it suitable for applications requiring high-speed switching in compact electronic devices like smartphones and tablets. The package style is small outline with gull wing terminals for surface mount assembly.
Philips Semiconductors
N-CHANNEL; Configuration: SINGLE; Surface Mount: YES; Maximum Power Dissipation (Abs): .36 W; Operating Mode: ENHANCEMENT MODE; Maximum Operating Temperature: 150 Cel;
2N2222A
Tesla Elektronicke Soucastky
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 300 MHz; Maximum Power Dissipation (Abs): .5 W; Maximum Collector Current (IC): .8 A;
Tt Electronics Plc
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 250 MHz; Maximum Collector Current (IC): .8 A; JESD-30 Code: O-MBCY-W3;
MMBF170LT1G
Rochester Electronics
N-CHANNEL; Configuration: SINGLE WITH BUILT-IN DIODE; Surface Mount: YES; Maximum Power Dissipation (Abs): .225 W; Package Style (Meter): SMALL OUTLINE; No. of Terminals: 3;
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;
1217754-1
TE Connectivity
TAB TERMINAL; Terminal Gender: MALE; Safety Approval: UL;
1061
Ntt
LUG TERMINAL;
PMNF1-3R-X
Panduit
RING TERMINAL;
285-407
Wago
The Wago 285-407 is a DIN RAIL mounted MODULAR TERMINAL BLOCK with 6 AWG wire gauge, rated for 1000V. Featuring a wire cross section of 95 mm2, it offers fastening via CONNECTOR and supports up to 4 ways. Ideal for industrial applications requiring secure electrical connections in high voltage environments.
1196
Zierick Manufacturing
WIRE TERMINAL; Manufacturer Series: 1196;
2-320563-2
TE Connectivity 2-320563-2 is a UL-approved RING TERMINAL for 14 AWG wire, rated at 300V. With a wire cross section of 2 mm2, it's ideal for female terminals in various applications.
2103
Advanced Interconnections
PCB TERMINAL; Manufacturer Series: 2103; Terminal Gender: FEMALE;
1725711
Phoenix Contact
Phoenix Contact 1725711 is a BARRIER STRIP TERMINAL BLOCK with 8 ways, rated for 6A current and 160V voltage. It uses SCREW fastening method, supports wire gauge up to 20 AWG (0.5 mm2), and has safety approvals from CSA, CUL, EAC, and UL. Ideal for BOARD mounting applications in various industries.
190070040
Molex
PUSH-ON TERMINAL; Wire Gauge: 10 AWG; Manufacturer Series: 19007; Terminal Gender: FEMALE;
1062
LUG TERMINAL; Additional Features: MATERIAL: STEEL; FINISH: TIN;
MS25036-156
RING TERMINAL; Wire Gauge: 10 AWG; Voltage (Rated): 300 V; Wire Cross Section: 6 mm2; No. of Ways: 1; Safety Approval: UL;
1SNK506210R0000
TE Connectivity's 1SNK506210R0000 is a UL-approved modular terminal block for DIN rail mounting. It supports wire gauge up to 10 AWG with rated voltage of 300V and current of 30A. Ideal for applications requiring a secure connection in industrial settings.
2-320563-3
Tyco Electronics Amp
RING TERMINAL; Wire Gauge: 16 AWG; Voltage (Rated): 300 V; Wire Cross Section: 1.419 mm2; Safety Approval: UL; Terminal Gender: FEMALE;
MS-25036-148
Molex MS-25036-148 is a UL-approved RING TERMINAL for 16 AWG wire, rated at 300V. With a wire cross section of 1.42 mm2, it's ideal for FEMALE terminals in various electrical applications.
1787409
Phoenix Contact 1787409 is a 2-row barrier strip terminal block with CB, CUL, EAC, UL, VDE safety approvals. It has a rated voltage of 160V and can handle up to 8A current. Ideal for board mounting applications requiring a wire gauge of 15 AWG and wire cross-section of 1.5mm².
8-320383-3
RING TERMINAL; Wire Gauge: 2 AWG; No. of Ways: 1; Safety Approval: UL; Terminal Gender: FEMALE; Wire Cross Section: 42.4 mm2;
1-726386-2
TAB TERMINAL; Safety Approval: UL; Terminal Gender: MALE;
3209578
Phoenix Contact 3209578 is a DIN RAIL mounted MODULAR TERMINAL BLOCK with UL & CSA approval. It supports 12 AWG wire, 800V voltage, and 4mm2 wire cross section. Ideal for applications requiring fast PUSH-IN installation with a rated current of 24A in up to 4 ways.
54
Cinch Connectivity Solutions
STRIP TERMINAL BLOCK; No. of Decks: 1; No. of Ways: 6;
1790506
The Phoenix Contact 1790506 is a Barrier Strip Terminal Block with 2 rows, rated for 8A current and 160V voltage. Featuring spring-loaded fastening, it accommodates wire gauge up to 16 AWG and wire cross-section of 1.5mm². Ideal for applications requiring CB, CUL, UL, VDE safety approvals in connector mounting setups.
Partstack™ will investigate all reported instances of potential suspect/counterfeit part listings.
1754449
Phoenix Contact 1754449 is a Barrier Strip Terminal Block with 2.5mm2 wire cross section, rated for 12A current and 320V voltage. It has CB, CSA, CUL, EAC, UL, VDE safety approvals and uses screw fastening method. Ideal for connecting 12 AWG wires in various industrial applications.
1754520
BARRIER STRIP TERMINAL BLOCK; Mounting Type: CONNECTOR; Fastening Method: SCREW; Additional Features: PA, 94V-0; Wire Gauge: 12 AWG; Voltage (Rated): 250 V;
1754724
BARRIER STRIP TERMINAL BLOCK; Fastening Method: SCREW; Additional Features: PA, 94V-0; Wire Gauge: 12 AWG; Voltage (Rated): 250 V; Current (Rated): 12 A;
1754504
The Phoenix Contact 1754504 is a Barrier Strip Terminal Block with 5 ways, rated for 12A current and 320V voltage. It uses screw fastening method and supports wire gauge up to 12 AWG. Ideal for industrial applications requiring secure electrical connections in limited space.
1754481
1754801
Phoenix Contact 1754801 is a BARRIER STRIP TERMINAL BLOCK with 3 ways, rated at 12A and 320V. It accepts wire gauge up to 16 AWG and wire cross section of 2.5mm², featuring PUSH-IN fastening method. Ideal for applications requiring secure electrical connections in various industries.
1754559
MODULAR TERMINAL BLOCK; Mounting Type: BOARD; Fastening Method: SOLDER; Additional Features: PBT, UL 94 V-0; Wire Gauge: 13 AWG; Voltage (Rated): 250 V;
1754562
1754533
STRIP TERMINAL BLOCK; Mounting Type: BOARD; Fastening Method: CONNECTOR; Additional Features: PA, UL 94 V-0; Voltage (Rated): 320 V; No. of Ways: 7;
1754575
STRIP TERMINAL BLOCK; Mounting Type: BOARD; Fastening Method: CONNECTOR; Additional Features: PBT, 94V-0; Wire Gauge: 13 AWG; Voltage (Rated): 250 V;
1754436
Phoenix Contact 1754436 is a STRIP TERMINAL BLOCK with 2.5 mm² wire cross section, rated for 320V voltage and 12A current. It is mounted on BOARD using CONNECTOR fastening method, approved by CB, CSA, CUL, EAC, UL, VDE. Ideal for industrial applications requiring secure electrical connections.
1754517
1754546
BARRIER STRIP TERMINAL BLOCK; Fastening Method: SCREW; Additional Features: PA, 94V-0; Wire Gauge: 12 AWG; Voltage (Rated): 250 V; No. of Rows: 1;
1754571
Phoenix Contact 1754571 Barrier Strip Terminal Block has 3 ways, rated for 12A current and 320V voltage. With a wire gauge of 16 AWG and wire cross section of 2.5mm², it is ideal for applications requiring secure connections in industrial settings.
1754568
BARRIER STRIP TERMINAL BLOCK; Mounting Type: BOARD; Fastening Method: CONNECTOR; Wire Gauge: 14 AWG; Voltage (Rated): 320 V; Wire Cross Section: 2.5 mm2;
1754643
1754601
The Phoenix Contact 1754601 is a Barrier Strip Terminal Block with 10 ways, rated for 12A current and 320V voltage. Featuring a wire gauge of 12 AWG and wire cross section of 2.5mm², it is ideal for industrial control applications requiring secure connections with CB, CSA, CUL, EAC, UL, VDE safety approvals.
1754937
BARRIER STRIP TERMINAL BLOCK; Mounting Type: CONNECTOR; Fastening Method: PUSH-IN; Additional Features: STANDARD: UL 94V-0, PA; Wire Gauge: 16 AWG; Voltage (Rated): 320 V;
1754665
BARRIER STRIP TERMINAL BLOCK;
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