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
LV5072M-MPB-H by Onsemi is a VOLTAGE-MODE Switching Regulator with 2700 kHz Max Frequency. BICMOS tech, -20 to 85 °C temp range, and 12 terminals make it ideal for power management apps. RECTANGULAR PLASTIC/EPOXY package in SMALL OUTLINE suits surface mount designs.
Median Price
$0.548
Lifecycle Status
Suppliers In-Stock
5
In-Stock Inventory
1k+
Rochester
1+ parts
-
100+ parts
$0.528
1k+ parts
$0.439
10k+ parts
$0.391
DigiKey
$0.660
Verical
$0.489
Digiode
$0.411
Vyrian
Corohmni
$0.364
Corphita
$0.390
QUARKTWIN TECHNOLOGY LTD
Problanco Electronics
TANS Electronics
SupplyDigital Components
Kulean Microsystems
Continental Prestige Electronics
UHIMA Technologies
The utilization of plastic/epoxy material for the package body ensures lightweight construction, making it easier to handle and install.
Surface mount capability allows for easy and efficient PCB assembly, saving time and effort during manufacturing.
The rectangular package shape provides a compact design, making it suitable for space-constrained applications.
With 12 terminals, this product offers versatility in connectivity options for different circuit configurations.
The small outline and shrink pitch package style ensures a space-saving design, ideal for applications where board real estate is limited.
The high maximum operating temperature of 85 °C ensures reliability and stability in various operating conditions.
The voltage-mode control mode offers precise and efficient regulation of the output voltage, contributing to overall performance optimization.
The low minimum operating temperature of -20 °C allows for reliable operation even in extreme cold environments.
The dual terminal position provides flexibility in connection options, accommodating diverse circuit layouts and configurations.
The high maximum switching frequency of 2700 kHz enables fast response times and efficient power delivery, ideal for demanding applications.
The utilization of BiCMOS technology offers a blend of high-speed performance and low power consumption, making it a reliable and efficient choice for switching regulators.
The gull-wing terminal form provides secure solder connections, enhancing durability and reliability in operation.
The small terminal pitch of 0.8 mm allows for fine-pitch mounting, facilitating high-density PCB layouts and compact designs.
Switching Regulators & Controllers LV5072M-MPB-H attributes and parameters. Explore more Switching Regulators & Controllers devices from Onsemi
Control Mode:
JESD-30 Code:
No. of Terminals:
Maximum Operating Temperature:
Minimum Operating Temperature:
Package Body Material:
Package Code:
Package Equivalence Code:
Package Shape:
Package Style (Meter):
Qualification:
Sub-Category:
Surface Mount:
Maximum Switching Frequency:
Technology:
Temperature Grade:
Terminal Form:
Terminal Pitch:
Terminal Position:
LV5072M-MPB-H Other Function Semiconductors trade compliance attributes, and parameters.
ECCN
EAR99
ECCN Governance
EAR
HTS
8542.39.00.01
SB
8542.39.00.00
Established in 1999, Onsemi is a leading global provider of power and image-sensing technologies. They are dedicated to building a better future for the automotive, industrial, cloud, medical, and IoT markets. Onsemi's core technologies include analog, digital, and mixed-signal products that offer innovative solutions for advanced automotive systems; highly reliable power management products for industrial applications; low-cost imaging solutions for medical equipment and consumer electronics; and robust communication architectures for the Internet of Things (IoT).
President, CEO
Hassane El-Khoury
Executive VP, CFO, Treasurer
Thad Trent
Senior VP
Ross F. Jatou
Aizu Fab
Fabrication
Fab Initiation
1995
Japan
Aizu Wakamatsu
Wafer Capacity
52,000
Si/EPI Fab
2018
Czech Republic
Rožnov pod Radhoštěm
10,000
Expansion Phase 1 for SiC / EPI
2019
14,500
Expansion Phase 2 for SiC / EPI
2024
SiC Fab
2022
USA
Hudson
Bucheon
2013
South Korea
61,000
ISMF - Malaysia
1990
Malaysia
Seremban
95,000
Roznov Device Fab
1987
80,000
Fab 10
2002
East Fishkill
15,000
Burlington
1986
Canada
Gresham
1998
45,000
Bucheon 150mm
2000
50,000
1983
Nampa
Pennsylvania
1997
Mountain Top
36,000
LM107H/883C
Rochester Electronics
OPERATIONAL AMPLIFIER; Temperature Grade: MILITARY; Terminal Form: WIRE; No. of Terminals: 8; Package Shape: ROUND; Package Equivalence Code: CAN8,.2;
M85049/85-08W02
Amphenol
CIRCULAR CONN ACCESSORY; Shell Sizes: 8; 9; IEC Conformity: NO; MIL-Connector Accessory Name: BAND LOCK ADAPTER; MIL Conformity: YES; DIN Conformity: NO;
LL4148
TDK
RECTIFIER DIODE; Surface Mount: YES; Terminal Finish: Tin/Lead (Sn/Pb); No. of Phases: 1; No. of Elements: 1; Maximum Output Current: .2 A;
BSS138-7-F
SPC TECHNOLOGY/ MULTICOMP
N-CHANNEL; Configuration: SINGLE WITH BUILT-IN DIODE; Surface Mount: YES; Maximum Drain Current (ID): .2 A; Minimum DS Breakdown Voltage: 50 V; Operating Mode: ENHANCEMENT MODE;
2N7002
General Semiconductor
N-CHANNEL; Configuration: SINGLE WITH BUILT-IN DIODE; Surface Mount: YES; JEDEC-95 Code: TO-236AB; Qualification: Not Qualified; Package Style (Meter): SMALL OUTLINE;
1N4148WS
Yangzhou Yangjie Electronics
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
BAV99-7-F
Multicomp Pro
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 3; Surface Mount: YES; Package Shape: RECTANGULAR;
LP2950CDT-3.3G
Onsemi
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.
LM358M
Texas Instruments
LM358M by Texas Instruments is an Operational Amplifier with 2 functions, featuring a max input offset voltage of 9000 uV and a nominal voltage of 5 V. It is commonly used in applications requiring high common mode rejection ratio and low bias current, such as sensor interfaces and signal conditioning circuits.
LM2931AZ-5.0RPG
LM2931AZ-5.0RPG by Onsemi is a Fixed Positive Single Output LDO Regulator with 5V nominal output voltage and 0.1A max output current. It features a low dropout voltage of 0.6V, making it suitable for applications requiring stable power supply in temperature range from -40 to 125°C. The package style is cylindrical with matte tin terminal finish, ideal for various electronic devices needing precise voltage regulation.
SS14
Silicon Standard
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
1N4148
Shenzhen Yixinsemi Electronics
RECTIFIER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: ROUND;
08055C104KAT4A
KYOCERA AVX
08055C104KAT4A by KYOCERA AVX is a ceramic capacitor with 0.1uF capacitance, rated for 50V. With X7R temperature characteristics and -55 to 125 °C operating range, it's ideal for SMT applications requiring compact size and high reliability. The wraparound terminals and multi-layer design make it suitable for various electronic circuits.
RC0402FR-071KL
Yageo
The Yageo RC0402FR-071KL is a fixed resistor with a resistance of 1000 ohm and a tolerance of 1%. It is suitable for surface mount applications and has a max operating temperature of 155 °C.
2N2222A
Aeroflex/metelics
NPN; Configuration: SINGLE; Surface Mount: NO; Maximum Collector Current (IC): .8 A; Package Shape: ROUND; Transistor Application: SWITCHING;
M39029/58-360
Defense Logistics Agency
CONNECTOR ACCESSORY; Contact Type: CRIMP REAR RELEASE; Mating Contacts: M39029/56-348, M39029/57-354; Insertion Tool Sources: MILITARY; Contact Gender: MALE; Alternate Contact Sources: MILITARY;
RC0402JR-070RL
Yageo's RC0402JR-070RL is a SMT fixed resistor with 0 ohm resistance, rated for temperatures from -55 to 155 °C. It features METAL GLAZE/THICK FILM tech, WRAPAROUND terminals, and 0.0625 W power dissipation. Ideal for jumper applications in electronics requiring compact surface mount components.
SMBJ18CA
Changzhou Galaxy Century Microelectronics
TRANS VOLTAGE SUPPRESSOR DIODE; Terminal Position: DUAL; Terminal Form: J BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
NE555D
Fairchild Semiconductor
PULSE; RECTANGULAR; Temperature Grade: COMMERCIAL; No. of Terminals: 8; Package Code: SOP; Package Shape: RECTANGULAR; Surface Mount: YES;
Synsemi
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: FLAT; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
LM2675MX-ADJ/NOPB
LM2675MX-ADJ/NOPB by Texas Instruments is a voltage-mode switching regulator with a max output current of 1A and a max output voltage of 37V. It operates in an automotive temperature grade range from -40°C to 125°C, making it suitable for various automotive applications requiring efficient power management. With a compact small outline package style and pulse width modulation control technique, this DMOS technology-based regulator offers reliable performance in space-constrained environments.
LM22672MR-ADJ/NOPB
LM22672MR-ADJ/NOPB by Texas Instruments is a voltage-mode switching regulator with a max output current of 1A and a max output voltage of 37V. It operates in the automotive temperature grade range (-40 to 125°C) and is suitable for applications requiring a small outline, low profile package style. With pulse width modulation control technique, it offers efficient buck switching configuration at up to 1000kHz frequency.
LM2675M-5.0/NOPB
National Semiconductor
SWITCHING REGULATOR; Temperature Grade: AUTOMOTIVE; No. of Terminals: 8; Package Code: SOP; Package Shape: RECTANGULAR; Surface Mount: YES;
LT8614IUDC#TRPBF
Analog Devices
Analog Devices' LT8614IUDC#TRPBF is a current-mode switching regulator with a buck switcher config. It operates b/w -40 to 125°C, suitable for automotive applications. With a max input voltage of 42V and switching frequency of 3MHz, it's ideal for compact designs requiring high efficiency.
LM2675M-ADJ
LM2675M-12
LM2842YMK-ADJL/NOPB
SWITCHING REGULATOR; Temperature Grade: AUTOMOTIVE; No. of Terminals: 6; Package Code: VSSOP; Package Shape: RECTANGULAR; Surface Mount: YES;
FAN2001MPX
SWITCHING REGULATOR; Temperature Grade: INDUSTRIAL; No. of Terminals: 6; Package Code: HVQCCN; Package Shape: SQUARE; Surface Mount: YES;
TPS61170DRVTG4
TPS61170DRVTG4 by Texas Instruments is a switching regulator with a max output current of 1.44A and max output voltage of 38V, ideal for industrial applications. Operating b/w -40 to 85°C, it features pulse width modulation control technique and buck-boost switcher configuration, making it suitable for various power management needs in compact designs. With a small outline package style and surface-mount capability, this regulator offers efficient performance in limited space setups.
TPS5420D
TPS5420D by Texas Instruments is a voltage-mode switching regulator with a max output current of 2A and max output voltage of 31V. It operates in the automotive temperature grade range (-40 to 125°C) making it suitable for automotive applications. With a compact small outline package style, it is ideal for space-constrained designs.
TPS55340RTET
TPS55340RTET by Texas Instruments is a switching regulator with a 3-38V output voltage range, ideal for automotive applications. Operating b/w -40 to 150°C, it features a 1200kHz switching frequency and current-mode control technique. With a compact chip carrier package style, it offers high efficiency in power management solutions.
LM2594HVMX-ADJ/NOPB
LM2594HVMX-ADJ/NOPB by Texas Instruments is a switching regulator with a voltage-mode control technique, operating b/w -40 to 125°C. It offers a max output current of 0.5A and supports input voltages from 4.5V to 60V, making it ideal for automotive applications requiring efficient power management in compact spaces.
NCP3063BDR2G
NCP3063BDR2G by Onsemi is a switching regulator with 1.5A output current, 190kHz max switching frequency, and -40 to 125°C operating temp range. Ideal for automotive applications due to its buck-boost switcher config and hysteric current mode control technique.
MC34063AP1G
MC34063AP1G by Onsemi is a switching regulator with 8 terminals, operating temp of 0-70°C, and max output current of 1.5A. Ideal for voltage-mode control applications in commercial-grade electronics due to its buck-boost configuration and PWM control technique.
LM22675MRE-5.0/NOPB
SWITCHING REGULATOR; Temperature Grade: AUTOMOTIVE; No. of Terminals: 8; Package Code: HLSOP; Package Shape: RECTANGULAR; Surface Mount: YES;
SG3525AN
Microsemi
SWITCHING CONTROLLER; Temperature Grade: COMMERCIAL; No. of Terminals: 16; Package Code: DIP; Package Shape: RECTANGULAR; Surface Mount: NO;
LMZ23603TZE/NOPB
Switching Regulator or Controllers; No. of Terminals: 7; Surface Mount: YES; Qualification: Not Qualified; JESD-609 Code: e3; Terminal Finish: MATTE TIN;
TPS560430YFDBVT
TPS560430YFDBVT by Texas Instruments is a switching regulator with a max output current of 0.6A and max output voltage of 24V, ideal for automotive applications. It operates b/w -40 to 125°C, with a control mode of current-mode PWM and a compact package style suitable for space-constrained designs.
LMZ14203EXTTZE/NOPB
LMZ14203EXTTZE/NOPB by Texas Instruments is a switching regulator with 3A output current, 6V max output voltage, and 1000 kHz max switching frequency. Ideal for military applications due to its MILITARY temperature grade, it operates b/w -55°C to 125°C and has a compact rectangular package style.
LMZ14201HTZX/NOPB
LMZ14201HTZX/NOPB by Texas Instruments is a switching regulator with 7 terminals, operating b/w -40 to 125°C. It offers a voltage output range of 5-24V and supports buck-boost configuration. Ideal for automotive applications due to its compact size (10.16x9.85x4.82mm) and high max switching frequency of 1000 kHz.
Partstack™ will investigate all reported instances of potential suspect/counterfeit part listings.
LV5069JA-ZH
SWITCHING REGULATOR; Temperature Grade: INDUSTRIAL; No. of Terminals: 16; Package Code: SSOP; Package Shape: RECTANGULAR; Surface Mount: YES;
LV5061V-TLM-H
Switching Regulator or Controllers; Temperature Grade: INDUSTRIAL; No. of Terminals: 16; Package Code: SSOP; Package Shape: RECTANGULAR; Surface Mount: YES;
LV5050NV-TLM-E
LV5050NV-TLM-E by Onsemi is a voltage-mode switching regulator with a max operating temperature of 85°C and a max switching frequency of 1100 kHz. This BICMOS technology device comes in a small outline package, making it suitable for various applications requiring high-frequency power conversion.
LV5069JA
SWITCHING REGULATOR; Temperature Grade: INDUSTRIAL; No. of Terminals: 16; Package Code: LSSOP; Package Shape: RECTANGULAR; Surface Mount: YES;
LV5066V
SWITCHING CONTROLLER; Temperature Grade: INDUSTRIAL; No. of Terminals: 16; Package Code: LSSOP; Package Shape: RECTANGULAR; Surface Mount: YES;
LV5052V-TLM-E
Switching Regulator or Controllers; Temperature Grade: OTHER; No. of Terminals: 30; Package Code: SSOP; Package Shape: RECTANGULAR; Surface Mount: YES;
LV5071M
Switching Regulator or Controllers; Temperature Grade: OTHER; No. of Terminals: 12; Package Code: SSOP; Package Shape: RECTANGULAR; Surface Mount: YES;
LV5044V
DUAL SWITCHING CONTROLLER; Temperature Grade: OTHER; No. of Terminals: 30; Package Code: LSSOP; Package Shape: RECTANGULAR; Surface Mount: YES;
LV5065VB
DUAL SWITCHING CONTROLLER;
LV5050V
Switching Regulator or Controllers; Temperature Grade: OTHER; No. of Terminals: 20; Package Code: SSOP; Package Shape: RECTANGULAR; Surface Mount: YES;
LV5068V-TLM-H
LV5068V
LV5052V
LV5069JA-AH
LV5050NV
SWITCHING CONTROLLER; Temperature Grade: OTHER; No. of Terminals: 20; Package Code: LSSOP; Package Shape: RECTANGULAR; Surface Mount: YES;
LV5061V
LV5040V
LV5044V-TLM-E
LV5051T
Switching Regulator or Controllers; Temperature Grade: OTHER; No. of Terminals: 24; Package Code: TSSOP; Package Shape: RECTANGULAR; Surface Mount: YES;
LV5068V-MPB-H
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