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
Analog Devices' HMC1061LC5TR-R5 is a Sample & Hold IC in a ceramic square package, with 32 terminals and max droop rate of 400000 V/s. It operates at -40 to 85 °C, has a supply voltage of 2V, and track-and-hold functionality. Ideal for industrial applications requiring fast acquisition times and precise analog signal processing.
Median Price
$1,150.530
Lifecycle Status
Suppliers In-Stock
3
In-Stock Inventory
1k+
Nova Conductors
1+ parts
100+ parts
-
1k+ parts
10k+ parts
Vyrian
Digiode
Semicontronic
$0.410
$0.400
$0.398
Parana Technologies
$2.211
$2.056
IDEA Electronic Components Group
$2.377
$2.258
DigiPath Technology Company
$3.708
$3.560
Ampacity Inc.
$4.410
Advanced Electronics
$6.827
$6.213
$5.598
One Stop Electronics
$8.410
AZTECH Wire
$19.402
Corphita
Ceramic material provides excellent thermal conductivity and stability, making it ideal for high temperature industrial applications.
Allows for easy and efficient PCB assembly, saving time and effort in the manufacturing process.
High maximum droop rate ensures accurate and precise voltage holding capability, suitable for fast-paced sampling requirements.
Operates at a low nominal supply voltage, making it energy-efficient and cost-effective.
Can withstand high operating temperatures, extending the product's lifespan in harsh environmental conditions.
Compact width allows for space-saving integration into electronic devices and systems.
Supports a wide range of analog input voltages for versatile application compatibility.
Utilizes a sample and hold circuit for accurate signal processing and voltage holding capabilities.
Sample & Hold ICs HMC1061LC5TR-R5 attributes and parameters. Explore more Sample & Hold ICs devices from Analog Devices
Amplifier Type:
Total Functions:
Sub-Category:
Sampling Mode:
Nominal Acquisition Time:
Nominal Supply Voltage:
Maximum Supply Voltage:
Lowest Operating Temperature:
Maximum Operating Temperature:
Minimum Analog Input Voltage:
Maximum Analog Input Voltage:
Maximum Droop Rate:
Length:
Width:
Maximum Seated Height:
Total Terminals:
Terminal Pitch:
Terminal Position:
Terminal Form:
Package Body Material:
Surface Mount:
Temperature Grade:
JESD-30 Code:
Packing Method:
Package Code:
Package Shape:
Package Style (Meter):
Package Equivalence Code:
HMC1061LC5TR-R5 Amplifiers trade compliance attributes, and parameters.
ECCN
EAR99
ECCN Governance
EAR
HTS
8542.33.00.01
SB
8542.33.00.00
Analog Devices Inc. (ADI) is one of the leading companies in the areas of integrated circuit (IC) design, manufacturing, testing, and marketing. ADI is known for their high-performance semiconductor solutions which enable customers to create innovative systems that solve critical challenges. The company has over 40 years of experience in the industry and has been consistently recognized as an industry leader for its innovation as well as its commitment to quality products and services. They have garnered numerous awards throughout the years including awards from Gartner Magic Quadrant for Industrial IoT Platforms; Frost & Sullivan’s Global Product Leadership Award; and various awards relating to automotive safety technology such as JESD209-3 Automotive Grade Certifications from AEC-Q100.
CEO
Vincent Roche
Interim CFO
James Mollica
CAO
Michael Sondel
Limerick Fab
Fabrication
Fab Initiation
1977
Ireland
Limerick
Wafer Capacity
30,000
Hillview Fab
2001
USA
Milpitas
15,000
Wilmington Fab
1967
Wilmington
50,000
Camas Fab
1997
Camas
18,000
Beaverton-Portland
1987
Beaverton
14,000
L7805CV
STMicroelectronics
L7805CV by STMicroelectronics is a fixed positive single output standard regulator with an output voltage of 5V and max current of 1.5A. It operates in temperatures ranging from 0 to 125°C, making it suitable for various applications requiring stable voltage regulation in electronic circuits.
2N2222A
Digitron Semiconductors
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 300 MHz; Maximum Power Dissipation (Abs): .5 W; Maximum Collector Current (IC): .8 A;
Gec Plessey Semiconductors
LIS2DH12TR
LIS2DH12TR by STMicroelectronics is a 3-axis accelerometer with digital voltage output. It operates b/w -40 to 85°C, with supply voltage range of 1.71-3.6V. Ideal for applications requiring precise motion sensing in compact spaces like wearables and IoT devices.
BSS123-7-F
Diodes Incorporated
BSS123-7-F by Diodes Inc. is a N-channel FET with 100V DS breakdown voltage and 0.17A drain current. Ideal for switching applications, it features a single configuration with built-in diode, operates in enhancement mode, and has a max power dissipation of 0.3W.
MBR130T1G
Onsemi
MBR130T1G by Onsemi is a Schottky rectifier diode with max output current of 1A and max repetitive peak reverse voltage of 30V. It operates b/w -65 to 125°C, suitable for surface mount applications in electronics requiring low forward voltage drop.
PIC18F4550-I/PT
Microchip Technology
PIC18F4550-I/PT by Microchip: 8-bit microcontroller with 44 terminals, 48 MHz clock frequency, and USB connectivity. Ideal for industrial applications requiring low power mode and 10-bit ADC channels.
1N4148
American Power Devices
RECTIFIER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: ROUND;
1N4148WS
Daco Semiconductor
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
Central Semiconductor
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 250 MHz; Transistor Application: SWITCHING; Transistor Element Material: SILICON;
SS14
Pro-an Electronic
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
C1206C104K5RACTU
KEMET Corporation
KEMET C1206C104K5RACTU 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 SMT applications due to its rectangular package shape and wraparound terminals.
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%.
LM2931Z-5.0G
LM2931Z-5.0G by Onsemi is a Fixed Positive Single Output LDO Regulator with 5V output voltage, 0.6V dropout voltage, and 0.1A output current. It is ideal for applications requiring stable power supply in temperature-sensitive environments due to its operating range of -40°C to 125°C.
Semicoa
LM317T
ADJUSTABLE POSITIVE SINGLE OUTPUT STANDARD REGULATOR; No. of Terminals: 3; Terminal Form: THROUGH-HOLE; JESD-30 Code: R-PSFM-T3; Adjustability: ADJUSTABLE; Package Equivalence Code: SIP3,.1TB;
SN65HVD230DR
Texas Instruments
SN65HVD230DR by Texas Instruments is a BICMOS technology interface circuit with 1Mbps data rate, suitable for industrial applications. It operates at 3.3V, has 8 terminals in a small outline package, and can withstand temperatures from -40 to 85°C.
LM317AEMP/NOPB
National Semiconductor
ADJUSTABLE POSITIVE SINGLE OUTPUT STANDARD REGULATOR; No. of Terminals: 3; Package Code: SOP; Terminal Form: GULL WING; Qualification Status: Not Qualified; Width: 3.56 mm;
DP83848IVVX/NOPB
Texas Instruments DP83848IVVX/NOPB is a 3.3V Ethernet transceiver with 100000 Mbps data rate, suitable for industrial applications. It features CMOS technology, operates b/w -40 to 85 °C, and comes in a low profile flatpack package with matte tin finish.
LM317LMX/NOPB
LM317LMX/NOPB by Texas Instruments is an adjustable positive single output standard regulator with a max input-output voltage differential of 40V. It operates in temperatures ranging from -40°C to 125°C and has a max output current of 0.1A, making it suitable for various applications requiring precise voltage regulation.
SMP11FY
Analog Devices
Analog Devices' SMP11FY is a Sample & Hold IC with 14 terminals, ceramic package, and rectangular shape. It operates at ±15V power supplies, has a max droop rate of 0.56 V/s, and nominal voltage of 15V. Ideal for commercial applications requiring bipolar technology and fast acquisition time of 5 us.
HA9P5320-5Z
Intersil
SAMPLE AND HOLD CIRCUIT; Temperature Grade: COMMERCIAL EXTENDED; Terminal Form: GULL WING; No. of Terminals: 16; Package Code: SOP; Package Shape: RECTANGULAR;
SMP-04S
Analog Devices' SMP-04S is a CMOS Sample & Hold IC with 4 functions, operating at 5V. It features a small outline package, tin lead finish, and dual terminal position. With a nominal acquisition time of 1us, it is ideal for sample applications requiring quick voltage tracking in electronic circuits.
5962-8760801GA
The Texas Instruments 5962-8760801GA is a MILITARY-grade Sample & Hold IC with a supply voltage of ±15V. It features a fast acquisition time of 25us and operates in temperatures ranging from -55 to 125°C. Ideal for applications requiring precise signal sampling and holding capabilities.
4860
Teledyne Technologies
SAMPLE AND HOLD CIRCUIT; Temperature Grade: COMMERCIAL; Terminal Form: THROUGH-HOLE; No. of Terminals: 24; Package Code: DIP; Package Shape: RECTANGULAR;
SMP11GPZ
Analog Devices' SMP11GPZ is a Sample & Hold IC with 14 terminals, operating at -40 to 85 °C. It has a max droop rate of 0.9 V/s and nominal voltage of ±15 V. Ideal for industrial applications requiring fast acquisition time and precise analog signal sampling.
AD1154BD
AD1154BD by Analog Devices is a Sample & Hold IC with 14 terminals, operating at -25 to 85 °C. It has a max droop rate of 2.5 V/s and acquisition time of 5 us. Ideal for applications requiring precise analog signal sampling in hybrid technology setups.
AD389KD
AD389KD by Analog Devices is a Sample & Hold IC with 14 terminals, operating at -10V to +10V analog input voltage range. It has a max acquisition time of 5us and operates on +/-15V power supplies. Ideal for commercial applications requiring precise sample and hold circuitry in a compact IN-LINE package style.
MAX5166MCCM+T
Maxim Integrated
SAMPLE AND HOLD CIRCUIT; Temperature Grade: COMMERCIAL; Terminal Form: GULL WING; No. of Terminals: 48; Package Code: LFQFP; Package Shape: SQUARE;
HA3-5340-5
Rochester Electronics
SAMPLE AND HOLD CIRCUIT; Temperature Grade: COMMERCIAL EXTENDED; Terminal Form: THROUGH-HOLE; No. of Terminals: 14; Package Shape: RECTANGULAR; Package Style (Meter): IN-LINE;
LF298MX
LF298MX by Texas Instruments is a Sample & Hold IC with 14 terminals and a small outline package. It operates at ±15V power supplies, has a max acquisition time of 25us, and can handle analog input voltages up to ±11.5V. Ideal for applications requiring fast sampling and holding of analog signals in temperature-sensitive environments.
MAX5166LECM
SAMPLE AND HOLD CIRCUIT; Temperature Grade: INDUSTRIAL; Terminal Form: GULL WING; No. of Terminals: 48; Package Code: LFQFP; Package Shape: SQUARE;
HA4-2420-2
Renesas Electronics
SAMPLE AND HOLD CIRCUIT; Temperature Grade: MILITARY; Terminal Form: NO LEAD; No. of Terminals: 20; Package Code: QCCN; Package Shape: SQUARE;
SMP08FSZ-REEL
Analog Devices' SMP08FSZ-REEL is a Sample & Hold IC with 8 functions, CMOS technology, and 5V nominal voltage. It has a max droop rate of 0.02 V/s and operates in industrial temperature range (-40 to 85 °C). Ideal for sample-and-hold circuits in various applications requiring precise analog signal acquisition.
SMP04ESZ
Analog Devices' SMP04ESZ is a Sample & Hold IC with 4 functions, CMOS technology, and 16 terminals. It operates at -40 to 85°C, with a max acquisition time of 11us. Ideal for industrial applications requiring precise analog signal sampling and holding capabilities in compact designs.
SMP10AY/883
Analog Devices' SMP10AY/883 is a MIL-STD-883 compliant Sample & Hold IC with 14 terminals. It operates at temperatures from -55 to 125°C, with a max droop rate of 4 V/s. Ideal for military applications requiring fast acquisition times and bipolar technology.
MAX5168MCCM+T
LF198AH
SAMPLE AND HOLD CIRCUIT; Temperature Grade: MILITARY; Terminal Form: WIRE; No. of Terminals: 8; Package Shape: ROUND; Technology: BIPOLAR;
MAX5166NECM
AD5533ABC-1
AD5533ABC-1 by Analog Devices is a Sample & Hold IC with 74 terminals, operating at -40 to 85°C. It has a supply voltage of 5V and max acquisition time of 16µs. Ideal for industrial applications requiring a sample-and-hold circuit with low profile grid array package.
Partstack™ will investigate all reported instances of potential suspect/counterfeit part listings.
ADPA7005AEHZ-R7
ADPA7005AEHZ-R7 by Analog Devices is a wide band medium power RF amplifier with 12 dB gain, operating from 18-44 GHz. It can handle up to 27 dBm CW input power and operates in temperatures ranging from -40 °C to 85°C. Ideal for applications requiring high frequency amplification in RF & microwave systems.
ADAQ23876BBCZ
Analog Devices' ADAQ23876BBCZ is a 16-bit ADC with 0.00125% EL, 15 MHz sample rate, and 2'S COMPLEMENT BINARY output. Ideal for wireless data acquisition applications due to its compact GRID ARRAY package and fast 0.063 us conversion time. Operating from -40 to 85 °C, it offers precise analog-to-digital conversion in a small form factor.
ADMV8420ACPZ-R5
ADMV8420ACPZ-R5 by Analog Devices is a 24-terminal BAND PASS FILTER with a Center Frequency of 15500 MHz and Input Impedance of 50 OHM. It operates b/w -40 to 85 °C and is ideal for applications requiring precise frequency filtering in electronic circuits.
ADMV8420ACPZ
Analog Devices' ADMV8420ACPZ is a 24-terminal BAND PASS FILTER with a Center Frequency of 15500 MHz and Input Impedance of 50Ω. Operating b/w -40°C to 85°C, it's ideal for applications requiring precise filtering in electronic systems.
AD3542RBCPZ16-RL7
AD3542RBCPZ16-RL7 by Analog Devices is a 16-bit D/A converter with max analog output voltage of 7.5V, 0.006103% linearity error, and 0.1us settling time. Ideal for applications requiring precise analog signal generation in temperature-sensitive environments.
ADN4693E-1BCPZ
ADN4693E-1BCPZ by Analog Devices is a Line Driver & Receiver with 16 terminals, operating at 3.3V nominal voltage. It features a max transmit delay of 2.4ns and differential output for EIA/TIA-899 interface standard applications in industrial settings.
ADN4693E-1BCPZ-RL7
ADN4693E-1BCPZ-RL7 by Analog Devices is a Line Driver & Receiver with 16 terminals, operating at 3.3V. It offers a max transmit delay of 2.4ns and max supply current of 24mA. Ideal for applications requiring differential output and EIA/TIA interface standards compliance in tight spaces due to its very thin profile chip carrier package style.
ADPA7005CHIP
ADPA7005CHIP by Analog Devices is a wide band medium power RF amplifier with 11.5 dB gain, operating from 20-44 GHz. It can handle up to 27 dBm CW input power and operates in temperatures ranging from -55 °C to 85°C. Ideal for applications requiring high frequency amplification in RF & microwave systems.
ADPA7005AEHZ
ADPA7005AEHZ by Analog Devices is a wide band medium power RF amplifier with 12 dB gain. It operates b/w 18-44 GHz, handling up to 27 dBm CW input power. Ideal for applications requiring high frequency amplification in temperatures ranging from -40 to 85°C.
AD3542RBCPZ16
AD3542RBCPZ16 by Analog Devices is a 16-bit D/A converter with max analog output voltage of 7.5V and linearity error of 0.006103%. It features a nominal settling time of 0.1us, making it ideal for applications requiring precise analog signal generation in temperature-sensitive environments. With a compact square package shape and surface mount capability, this chip carrier is suitable for space-constrained designs where high performance is essential.
HMC1061LC5
SAMPLE AND HOLD CIRCUIT; Temperature Grade: INDUSTRIAL; Terminal Form: NO LEAD; No. of Terminals: 32; Package Code: HQCCN; Package Shape: SQUARE;
HMC1061LC5TR
Analog Devices' HMC1061LC5TR is a ceramic Sample & Hold IC with 32 terminals, operating at -40 to 85°C. It features a max droop rate of 400000 V/s, nominal voltage of 2V, and max analog input voltage of ±1V. Ideal for industrial applications requiring fast acquisition times and precise sample-and-hold circuitry.
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