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
Rockwell Automation's 440R-EM4R2 is a 4PST safety relay with operate time of 25ms and release time of 150ms. It has IP20/IP40 sealing, operates on DC supply at 24V, and mounts on DIN-rail. Ideal for applications requiring fast response times in industrial automation systems.
Median Price
$265.073
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TME
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$218.750
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$231.398
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Advanced Electronics
$277.078
$254.911
$238.860
Argo Parts USA
RLX Solution Inc. (Excess)
Allows the relay to control multiple circuits simultaneously, providing versatile functionality.
Ensures quick response time for activating the relay, ideal for applications where speed is crucial.
Provides protection against dust and limited ingress of water, making it suitable for a variety of environments.
Can withstand high temperatures without compromising performance, increasing reliability.
Efficiently operates with low power consumption, reducing energy costs.
Ensures timely disconnection of circuits, enhancing safety measures.
Facilitates easy installation on standard DIN rails, saving time and effort during setup.
Works with common DC power sources, ensuring compatibility with existing systems.
Special Function Relays 440R-EM4R2 attributes and parameters. Explore more Special Function Relays devices from Rockwell Automation
Relay Type:
Relay Function:
Coil Maximum DC Voltage:
Coil/Input Supply Type:
Coil Power:
Coil Maximum DC Current:
Coil Resistance:
Width:
Height:
Length/Diameter:
Dimensions:
Mounting Type:
Minimum Operating Temperature:
Maximum Operating Temperature:
Activation Time:
Release Time:
Termination Type:
Industry Standard Compliance:
Sealing Type:
Additional Features:
440R-EM4R2 Relays trade compliance attributes, and parameters.
ECCN
EAR99
ECCN Governance
EAR
Rockwell Automation mission is to improve the quality of life by making the world more productive and sustainable. We are committed to enabling the next generation of smart manufacturing. With the right strategy, talented people, and our substantial financial strength, we are dedicated to deliver value to our customers. When you invest in Rockwell Automation technology and solutions, you invest in the future of manufacturing. We are the largest company in the world that is dedicated to industrial automation and information. Across the globe, our flagship Allen‑Bradley® and FactoryTalk® product brands are recognized for excellence. Our keen focus on technology innovation, domain expertise, and integrity and corporate responsibility fuels our success.
1N4148
Capar Components
RECTIFIER DIODE; Surface Mount: NO; No. of Phases: 1; Maximum Forward Voltage (VF): 1 V; Terminal Finish: Tin/Lead (Sn/Pb); Maximum Output Current: .15 A;
LM2931Z-5.0RPG
Onsemi
LM2931Z-5.0RPG by Onsemi is a Fixed Positive Single Output LDO Regulator with 5V Nominal Output Voltage, 0.1A Max Output Current, and 6V Min Input Voltage. It operates in temperatures ranging from -40 to 125 °C and is ideal for applications requiring stable voltage regulation in electronic circuits.
PIC18F4550-I/P
Microchip Technology
PIC18F4550-I/P by Microchip Technology is an 8-bit microcontroller with a max clock frequency of 48 MHz. It features 13-Ch 10-Bit ADC channels and USB connectivity, making it ideal for industrial applications requiring low power consumption and high-speed data processing. With 2048 RAM bytes and 256 Data EEPROM size, this CMOS technology-based microcontroller offers versatile performance in various embedded systems.
LM107H
Raytheon Semiconductor
OPERATIONAL AMPLIFIER; Temperature Grade: MILITARY; Terminal Form: WIRE; No. of Terminals: 8; Package Shape: ROUND; Low-Offset: NO;
SS14
Surge Components
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
AB26TRB-32.768KHZ--T
Abracon
AB26TRB-32.768KHZ--T by Abracon is a crystal oscillator with 20 ppm frequency tolerance, 126% stability, and 35000 ohm series resistance. Ideal for applications requiring 0.032768 MHz nominal frequency in surface mount configurations.
LL4148GS08
Temic Semiconductors
LL4148GS08 by Temic Semiconductors is a glass diode with a max reverse recovery time of 0.008 us and max forward voltage of 1 V. It is a rectifier diode with a max output current of 0.15 A, ideal for applications requiring fast switching speeds and low power dissipation in electronic circuits.
Nte Electronics
RECTIFIER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: ROUND;
CRCW04020000Z0ED
Vishay Intertechnology
Vishay Intertechnology's CRCW04020000Z0ED is a 0 ohm jumper resistor with METAL GLAZE/THICK FILM tech. Operating b/w -55 to 155 °C, it suits SMT applications in automotive electronics due to AEC-Q200 compliance and 0.063 W power dissipation.
SMBJ18CA
Micro Commercial Components
TRANS VOLTAGE SUPPRESSOR DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
2N7002
Motorola
N-CHANNEL; Configuration: SINGLE WITH BUILT-IN DIODE; Surface Mount: YES; Package Body Material: PLASTIC/EPOXY; Qualification: Not Qualified; Minimum Operating Temperature: -55 Cel;
Comchip Technology
N-CHANNEL; Configuration: SINGLE; Surface Mount: YES; Maximum Power Dissipation (Abs): .2 W; Maximum Operating Temperature: 150 Cel; Operating Mode: ENHANCEMENT MODE;
LM317T
Samsung
ADJUSTABLE POSITIVE SINGLE OUTPUT STANDARD REGULATOR; No. of Terminals: 3; Terminal Form: THROUGH-HOLE; Maximum Load Regulation (%): 1.5 %; Operating Temperature (TJ-Min): 0 Cel; Maximum Line Regulation (%/V): .07;
SDR0604-101KL
Bourns
SDR0604-101KL by Bourns is a surface mount fixed inductor with a nominal inductance of 100 uH. It is a general purpose inductor suitable for power applications, with a max rated current of 0.52 A and a self-resonance frequency of 9 MHz.
M24308/2-1F
Cristek Interconnects
D SUBMINIATURE CONNECTOR; Option: GENERAL PURPOSE; Contact Gender: FEMALE; No. of Rows Loaded: 2; Shell Size: 1/E; Filter Feature: NO;
Goodwork Semiconductor
Jgd Semiconductors
RECTIFIER DIODE; Surface Mount: NO; Maximum Operating Temperature: 175 Cel; Maximum Reverse Recovery Time: .004 us; Maximum Non Repetitive Peak Forward Current: .5 A; Maximum Forward Voltage (VF): 1 V;
MBR0520LT3G
MBR0520LT3G by Onsemi is a Schottky rectifier diode with a max forward voltage of 0.385V and output current of 0.5A. It operates b/w -65°C to 125°C, ideal for applications requiring high-speed switching and low power loss in compact electronic devices. The package style is small outline, making it suitable for surface mount designs in various electronics.
ULN2803A
Allegro MicroSystems
NPN; Configuration: 8 BANKS, DARLINGTON WITH BUILT-IN DIODE AND RESISTOR; Surface Mount: NO; Maximum Collector Current (IC): .5 A; Maximum Operating Temperature: 85 Cel; Terminal Form: THROUGH-HOLE;
1N4148WT
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: FLAT; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
2902725
Phoenix Contact
Special Relays;
PSR-MS60-2NO-24DC-SC
44510-1033
Omron
3-1415353-1
Tyco Electronics Cii
SAFETY RELAY; Mounting Feature: THROUGH HOLE-STRAIGHT MOUNT; Relay Action: MOMENTARY; Relay Function: 4PST; Coil or Input Supply Type: DC; Reference Standard: UL;
4-1415055-1
SAFETY RELAY; Mounting Feature: THROUGH HOLE-STRAIGHT MOUNT; Relay Action: MOMENTARY; Relay Function: 4PST; Coil or Input Supply Type: DC; Reference Standard: EN; IEC; UL; VDE;
2981376
LRD086
Schneider Electric Sa
2904958
2TLA010040R0000
Abb
2TLA010040R0000 by Abb is a 4PST SAFETY RELAY with DC input, weighing 190g. It meets CB, CCC, CE standards and is used for safety applications requiring random switching control.
T2500.0020
Littelfuse
OVERLOAD RELAY;
DPC01DM48
Carlo Gavazzi Holding Ag
DPC01DM48 by Carlo Gavazzi Holding Ag is a DPDT relay with 2 FORM C, IP20 sealing, and MOMENTARY action. It has a max AC contact current of 8A@250VAC and operates in temperatures ranging from -20 to 60 °C. Ideal for monitoring applications, it is CE, CSA, EN, GL, and UL certified for reliability.
2981813
Special Relays; Manufacturer Series: 2981813;
56460
K8DT-VW3CA
Special Relays; Manufacturer Series: K8DT-VW;
2901428
RM22LA32MR
EMG45-C7S/250/SO79
K8AK-PT1100-240VAC
K8DT-PH1TN
PSR-SCP-230AC/ESAM2/3X1/1X2/B
Partstack™ will investigate all reported instances of potential suspect/counterfeit part listings.
440R-D22R2
Rockwell Automation
440R-D22R2 by Rockwell Automation is a DPST safety relay with an operate time of 35ms and release time of 100ms. It has a max DC coil voltage of 24V, making it suitable for applications requiring quick response times in industrial automation systems. The relay's compact dimensions (119.4mm x 22.5mm x 113.6mm) and DIN-RAIL MOUNT feature make it easy to install in various control panels while meeting CE, CUL, EN, IEC, TUV, and UL standards for safety compliance.
440R-S12R2
SAFETY RELAY; Mounting Feature: DIN-RAIL MOUNT; Relay Action: MOMENTARY; Relay Function: DPST; Coil or Input Supply Type: DC; Reference Standard: CE; CUL; EN; IEC; TUV; UL;
440R-N23132S
440R-N23132S by Rockwell Automation is a 3PST safety relay with IP20/IP40 sealing. It operates at -5 to 55 °C, with a coil power of 2000mW and termination type SNAP-ON. Ideal for AC/DC contact or output supply applications, it has a max contact rating of 5A@250VAC and mounting feature DIN-RAIL MOUNT.
Supply Digital Components
$106.00
$54.25
$11.90
$7.29
Quantity
12,000 In-Stock
Total price ≈ $80,197.29
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