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
DG469EY-T1-E3 by Vishay Intertechnology is a SPDT multiplexer with a rectangular package and small outline. It has a max on-state resistance of 6 ohm, max switch-on time of 166 ns, and nominal off-state isolation of 57 dB. This multiplexer is commonly used in automotive applications due to its temperature grade and gull wing terminal form.
Median Price
$0.850
Lifecycle Status
Suppliers In-Stock
13
In-Stock Inventory
1k+
Chip1Stop
1+ parts
100+ parts
$0.737
1k+ parts
-
10k+ parts
Mouser Electronics
$1.450
$0.747
$0.699
DigiKey
$0.849
$0.757
Element14
$2.390
$1.410
$1.220
$1.150
Arrow
$0.759
TTI
$0.658
Verical
$0.616
Farnell
$0.579
$0.554
Newark
$0.916
$0.806
$0.755
Nova Conductors
$1.031
NAC Semi
$0.946
IBS Electronics
Vyrian
Semicontronic
$0.410
$0.400
$0.398
Ampacity Inc.
$0.445
Advanced Electronics
$1.003
Argo Parts USA
Corohmni
$15.451
Aztec Data Supply Inc.
$18.900
RC Electronics
Kepictronics
Futuretech Components
A-Z Elektronik GmbH
Continental Prestige Electronics
$1.050
$0.709
iodParts Technologies Inc.
Alle Elektronik GmbH
Netroflash
$1.010
$0.979
$0.959
Makes the product lightweight and durable, suitable for various applications.
Allows for easy installation and compatibility with modern manufacturing processes.
Provides versatility and ease of integration into electronic circuits.
Ensures stable and reliable performance within the specified voltage range.
Enables flexible and symmetric powering options for efficient operation.
Offers ample connectivity possibilities for multiplexing and switching applications.
Compact design allows for space-efficient PCB layout and module integration.
Withstands high-temperature environments, ensuring reliable performance in demanding conditions.
Can operate in extremely low-temperature environments, ideal for diverse applications.
Provides excellent corrosion resistance and solderability for long-lasting connectivity.
Enhances flexibility in circuit design and facilitates easy connectivity.
Low profile design enables compact and space-saving installations.
Compact size allows for efficient use of board space in various electronic systems.
Features a Single-Pole Double-Throw configuration, allowing for versatile switching options.
Can operate even with low input voltage, ensuring compatibility with a wide range of power sources.
Supports negative voltage applications, expanding its usability in different circuit designs.
Low resistance ensures minimal signal loss during switching operations.
Fast switching speed enhances performance in time-sensitive applications.
Compact form factor allows for efficient space utilization in electronic assemblies.
Quick switch-off time improves efficiency and accuracy for time-critical operations.
Designed to meet automotive industry standards, making it suitable for automobile applications.
Offers secure solder connections, ensuring reliable signal transmission.
Tolerates negative voltage variations, enhancing its versatility in various circuit configurations.
Suitable for negative power supply applications, adding to its compatibility in different systems.
Standardized pitch facilitates easy compatibility and integration with existing electronic components.
Handles high voltage inputs for use in a wide range of applications.
Provides excellent isolation between channels, minimizing cross-talk and ensuring accurate signal transmission.
Supports break-before-make switching, preventing signal interruption and maintaining consistent performance.
Ensures high accuracy and uniformity in resistance to enable reliable signal routing.
Multiplexers & Switches DG469EY-T1-E3 attributes and parameters. Explore more Multiplexers & Switches devices from Vishay Intertechnology
Other IC type:
JESD-30 Code:
JESD-609 Code:
Length:
Moisture Sensitivity Level (MSL):
Maximum Negative Supply Voltage (Vsup):
Minimum Negative Supply Voltage (Vsup):
Nominal Negative Supply Voltage (Vsup):
No. of Channels:
No. of Functions:
No. of Terminals:
Nominal Off-state Isolation:
Nominal On-state Resistance Match:
Maximum On-state Resistance (Ron):
Maximum Operating Temperature:
Minimum Operating Temperature:
Package Body Material:
Package Code:
Package Equivalence Code:
Package Shape:
Package Style (Meter):
Power Supplies (V):
Qualification:
Maximum Seated Height:
Sub-Category:
Maximum Supply Voltage (Vsup):
Minimum Supply Voltage (Vsup):
Nominal Supply Voltage (Vsup):
Surface Mount:
Maximum Switch-off Time:
Maximum Switch-on Time:
Switching (V):
Temperature Grade:
Terminal Finish:
Terminal Form:
Terminal Pitch:
Terminal Position:
Width (mm):
DG469EY-T1-E3 Other Function Semiconductors trade compliance attributes, and parameters.
HTS
8542.39.00.01
SB
8542.39.00.00
PCN Design/Specification - Multi Devices 17/May/2017
PCN Assembly/Origin - Mult Dev 25/Jan/2023
Vishay Intertechnology, Inc. is a renowned American manufacturer of discrete semiconductors and passive electronic components that have been used in many consumer products and industrial applications worldwide. Founded by Polish-born businessman Felix Zandman in 1962, Vishay has grown to become one of the world's largest manufacturers of these components, with a strong presence in every major market around the globe. The company also offers value-added solutions such as its patented passive components, replacing a number of legacy parts with more reliable, cost effective solutions.
Executive Chairman of the Board, Chief Business Development Officer
Marc Zandman
Chief Executive Officer, President, and Director
Joel Smejkal
Executive Vice President and Chief Financial Officer
Lori Lipcaman
Itzehoe - Fab Phase 1
Fabrication
Fab Initiation
2025
Germany
Itzehoe
Wafer Capacity
US - Fab 3
1986
USA
Santa Clara
24,500
US - Fab 2
1972
8,000
Austria
1984
Vöcklabruck
25,000
Taiwan
1967
Hsintien
12,000
Italy - Fab 8
1961
Canada
Torino
15,000
Israel
2000
Yokneam Illit
400
1N4148WS
Dc Components
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
SS14
Taitron Components
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
2N2222A
Central Semiconductor
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 250 MHz; Transistor Application: SWITCHING; Transistor Element Material: SILICON;
ULN-2803A
Sprague Electric
BUFFER OR INVERTER BASED PERIPHERAL DRIVER; Temperature Grade: OTHER; Terminal Form: THROUGH-HOLE; No. of Terminals: 18; Package Code: DIP; Package Shape: RECTANGULAR;
1N4148
Crimson Semiconductor
RECTIFIER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: ROUND;
LM317T
Inchange Semiconductor
Other Regulators; No. of Terminals: 3; Surface Mount: NO; Technology: BIPOLAR; Minimum Output Voltage-1: 1.2 V; No. of Outputs: 1;
87832-1420
Molex
87832-1420 by Molex is a 14-contact board connector with 0.079" pitch, suitable for commercial applications. It features matte tin over nickel finish, glass-filled polyamide insulator, and polarization key for easy assembly. Withstanding voltage of 1400VAC and operating temperature range from -55 to 105°C make it reliable for various electronic devices.
BAV99
General Semiconductor
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 3; Surface Mount: YES; Package Shape: RECTANGULAR;
2N7002
Weitron Technology
N-CHANNEL; Configuration: SINGLE; Surface Mount: YES; Maximum Power Dissipation (Abs): .35 W; Terminal Finish: TIN LEAD; Maximum Operating Temperature: 150 Cel;
Multicomp Pro
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: FLAT; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
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.
LL4148-GS08
Telefunken Microelectronics
RECTIFIER DIODE; Surface Mount: YES; JESD-609 Code: e0; No. of Elements: 1; Maximum Operating Temperature: 175 Cel; Maximum Non Repetitive Peak Forward Current: 2 A;
MC7805CTG
Onsemi
MC7805CTG by Onsemi is a fixed positive single output standard regulator with an output voltage of 5V and max current of 1A. It operates in temperatures ranging from 0 to 125°C, making it suitable for various applications requiring stable voltage regulation. The package style is flange mount with through-hole terminals, ensuring easy installation and reliability in diverse electronic designs.
L7805CV
Sgs-ates Componenti Electronici S P A
Other Regulators; No. of Terminals: 3; Maximum Input Voltage Absolute: 35 V; Maximum Voltage Tolerance: 5 %; Terminal Finish: Tin/Lead (Sn/Pb); Nominal Output Voltage-1: 5 V;
Transistor & Electronic
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 300 MHz; Maximum Power Dissipation (Abs): .5 W; Maximum Collector Current (IC): .8 A;
C1206C104M5RACTU
KEMET Corporation
KEMET C1206C104M5RACTU 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 ±20% tolerance. Ideal for surface mount applications in electronics requiring stable capacitance across temperatures.
Bytesonic Electronics
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 250 MHz; Maximum Collector Current (IC): .6 A; No. of Elements: 1;
SMBJ18CA
KYOCERA AVX
TRANS VOLTAGE SUPPRESSOR DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
RECTIFIER DIODE; Surface Mount: YES; Maximum Operating Temperature: 150 Cel; Maximum Output Current: .215 A; JESD-609 Code: e0; Maximum Forward Voltage (VF): .715 V;
LM555CN
Intersil
PULSE; RECTANGULAR; Temperature Grade: COMMERCIAL; No. of Terminals: 8; Package Code: DIP; Package Shape: RECTANGULAR; Surface Mount: NO;
ADG749BKSZ-REEL7
Analog Devices
ADG749BKSZ-REEL7 by Analog Devices is a SPDT switch with 6 terminals, operating at -40 to 125 °C. It has a max on-state resistance of 12 ohm and switching time of 15 ns. Ideal for automotive applications due to its compact size, low power consumption, and high isolation level of 87 dB.
TS3USB221ARSER
Texas Instruments
TS3USB221ARSER by Texas Instruments is a 10-terminal chip carrier with a very thin profile. It operates b/w -40 to 85°C, with a supply voltage range of 2.3V to 3.6V and max on-state resistance of 6 ohm. Ideal for industrial applications requiring a differential multiplexer with separate outputs and break-before-make switching capability.
NLASB3157DFT2G
NLASB3157DFT2G by Onsemi is a SPDT switch with 6 terminals, operating b/w -55 to 125 °C. It has a max on-state resistance of 15 ohm and offers 57 dB off-state isolation. Ideal for military-grade applications requiring fast switching times and low power consumption.
CD74HC4052PWRE4
CD74HC4052PWRE4 by Texas Instruments is a CMOS differential multiplexer with 4 channels. It operates at temperatures from -55 to 125 °C and has a max on-state resistance of 130 ohm. With a package style of small outline, thin profile, and shrink pitch, it is suitable for military-grade applications requiring precise signal switching.
TPS2066CDGNR-2
TPS2066CDGNR-2 by Texas Instruments is a small outline switch with separate outputs, operating b/w -40 to 125°C. With a terminal pitch of 0.65mm and GULL WING form, it's ideal for industrial applications requiring SPST type switches. This multiplexer has a max input voltage of 5.5V and low supply current of 0.001mA, making it suitable for various electronic systems.
MAX4886ETO+T
Analog Devices' MAX4886ETO+T is a 4-function multiplexer with 42 terminals, operating at -40 to 85°C. With a supply voltage of 3-3.6V, it offers separate outputs and low on-state resistance of 11 ohm. Ideal for industrial applications requiring audio/video switching in compact spaces.
DG409DY
Maxim Integrated
DIFFERENTIAL MULTIPLEXER; Temperature Grade: INDUSTRIAL; No. of Terminals: 16; Package Code: SOP; Package Shape: RECTANGULAR; Surface Mount: YES;
DG442DY+
Analog Devices' DG442DY+ is a CMOS SPST switch with 4 functions, 16 terminals, and -20V to +20V supply voltage range. With 85 ohm max on-state resistance and 60dB off-state isolation, it's ideal for industrial applications requiring fast switching times of 250ns on and 120ns off.
CD74HC4067M96
SINGLE-ENDED MULTIPLEXER; Temperature Grade: MILITARY; No. of Terminals: 24; Package Code: SOP; Package Shape: RECTANGULAR; Surface Mount: YES;
MAX4053ACPE
MAX4053ACPE by Maxim Integrated is a 16-terminal SPDT multiplexer with 3 functions, operating at 5V. It features a max on-state resistance of 100 ohm and switching time of 175 ns. Ideal for applications requiring high-speed signal routing in commercial temperature environments.
74HCT4051D,118
Nexperia
SINGLE-ENDED MULTIPLEXER; Temperature Grade: AUTOMOTIVE; No. of Terminals: 16; Package Code: SOP; Package Shape: RECTANGULAR; Surface Mount: YES;
CD4066BE
CD4066BE by Texas Instruments is a CMOS IC with 4 SPST channels, operating at -55 to 125 °C. It has a max on-state resistance of 1300 ohm and can handle a signal current of 0.025 A. Ideal for applications requiring low power consumption and high bandwidth up to 40 kHz.
TPS2052CDGNR
TPS2052CDGNR by Texas Instruments is a small outline switch with common output, suitable for industrial applications. With a max operating temperature of 125°C and min of -40°C, it offers SPST type switching at 260°C peak reflow temperature. Its compact design features a terminal pitch of 0.65mm and dual terminal position for versatile usage.
NC7SZ66M5X_NL
Fairchild Semiconductor
NC7SZ66M5X_NL by Fairchild Semiconductor is a CMOS SPST switch with 5 terminals, operating at temperatures from -40 to 85°C. It has a low profile rectangular package with matte tin finish and shrink pitch style. With a max on-state resistance of 30 ohms and fast switching times of 7-9 ns, it is ideal for industrial applications requiring high-speed signal multiplexing.
DG212CJ+
SPST; Temperature Grade: COMMERCIAL; No. of Terminals: 16; Package Code: DIP; Package Shape: RECTANGULAR; Surface Mount: NO;
CD4051BE
Thomson Consumer Electronics
SINGLE-ENDED MULTIPLEXER; Temperature Grade: INDUSTRIAL; No. of Terminals: 16; Package Code: DIP; Package Shape: RECTANGULAR; Surface Mount: NO;
CD74HCT4067MG4
CD74HCT4067MG4 by Texas Instruments is a 24-terminal CMOS multiplexer with a 5V supply voltage. It features a max on-state resistance of 270 ohm and operates in temperatures ranging from -55 to 125°C. Ideal for military-grade applications requiring high-speed signal switching with low power consumption.
HEF4051BT,653
SINGLE-ENDED MULTIPLEXER; Temperature Grade: INDUSTRIAL; No. of Terminals: 16; Package Code: SOP; Package Shape: RECTANGULAR; Surface Mount: YES;
74HC4052PW,118
DIFFERENTIAL MULTIPLEXER; Temperature Grade: AUTOMOTIVE; No. of Terminals: 16; Package Code: TSSOP; Package Shape: RECTANGULAR; Surface Mount: YES;
FSA8008AUMX
AUDIO/VIDEO SWITCH; Temperature Grade: INDUSTRIAL; No. of Terminals: 10; Package Code: QCCN; Package Shape: RECTANGULAR; Surface Mount: YES;
Partstack™ will investigate all reported instances of potential suspect/counterfeit part listings.
DG468DV-T1-E3
Vishay Intertechnology
Vishay Intertechnology's DG468DV-T1-E3 is a SPST switch with 6 terminals, operating at -40 to 85°C. It has a max on-state resistance of 9 ohm and switching voltage of +-15/12 V. Ideal for industrial applications requiring high isolation and fast switching times.
DG467DV-T1-E3
Vishay Intertechnology's DG467DV-T1-E3 is a SPST switch with 6 terminals, operating at -40 to 85°C. It has a max on-state resistance of 9 ohm and switching time of 160 ns. Ideal for industrial applications requiring a compact, surface-mountable solution with high isolation (61 dB).
DG469EQ-T1-E3
Vishay Intertechnology's DG469EQ-T1-E3 is a SPDT multiplexer with 8 terminals, operating at -40 to 125°C. It has a max on-state resistance of 6 ohm and switching time of 166 ns. Ideal for automotive applications due to its small outline package and high isolation of 57 dB.
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