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.
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Molex 18721-50 is a 2-row barrier strip terminal block with 21 ways, rated for 20A current and 300V voltage. It uses screw fastening method, suitable for cable mounting applications with CSA and UL safety approvals.
Median Price
$1.638
Lifecycle Status
Suppliers In-Stock
22
In-Stock Inventory
1k+
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Perfect Parts
Assy Fe
Having 2 rows allows for easy organization and connection of multiple wires, making installation more efficient.
The cable mounting type makes it easy to connect and secure wires without the need for additional tools or accessories.
Having CSA and UL safety approvals ensures that the terminal block meets the necessary safety standards, giving peace of mind to users.
Supporting up to 12 AWG wire gauge allows for compatibility with a wide range of wire sizes and types.
A rated voltage of 300V ensures safe operation and compatibility with standard electrical systems.
The barrier strip terminal block design offers excellent contact and connection reliability, making it suitable for various applications.
The screw fastening method provides a secure and reliable connection between wires and the terminal block, reducing the risk of loose connections.
With a rated current of 20A, this terminal block can handle moderate to high levels of electrical current, suitable for many applications.
Having 21 ways allows for a higher number of connections and configurations, making it versatile for various wiring setups.
Terminals & Terminal Blocks 18721-50 attributes and parameters. Explore more Terminals & Terminal Blocks devices from Molex
Product Type:
Additional Features:
Safety Compliance:
Rated Voltage:
Rated Current:
Wire Gauge:
Total Ways:
Total Decks:
Total Rows:
Mounting Style:
Fastening Style:
18721-50 Terminals & Terminal Blocks trade compliance attributes, and parameters.
ECCN
EAR99
ECCN Governance
EAR
HTS
8536.90.40.00
SB
Molex LLC is a manufacturer of electronic, electrical, and fiber optic connectivity systems. Molex offers over 100,000 products across a variety of industries, including data communications, medical, industrial, automotive and consumer electronics. They are notable for pioneering the Molex connector, which has seen universal adoption in personal computing. The company is considered the second largest electronic connector company in the world. Molex was established in 1938 by Frederick Krehbiel. The company began by making flowerpots out of an industrial byproduct plastic called Molex. Krehbiel developed this material by combining asbestos tailings, coal tar pitch, and limestone. Aside from flower pots, Molex also sold salt shakers before it expanded into electrical connectors and sensors.Later they made connectors for General Electric and other appliance manufacturers out of the same plastic. Molex acquired Woodhead Industries in 2006; the largest acquisition in the former's history at the time.
1N4148
Sensitron Semiconductor
RECTIFIER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: ROUND;
LM555CM
Intersil
Analog Waveform Generation Functions; Temperature Grade: COMMERCIAL; No. of Terminals: 8; Package Code: SOP; Package Shape: RECTANGULAR; Surface Mount: YES;
LM107H/883C
Rochester Electronics
OPERATIONAL AMPLIFIER; Temperature Grade: MILITARY; Terminal Form: WIRE; No. of Terminals: 8; Package Shape: ROUND; Package Equivalence Code: CAN8,.2;
BSS138
Weitron Technology
N-CHANNEL; Configuration: SINGLE WITH BUILT-IN DIODE; Surface Mount: YES; Maximum Power Dissipation (Abs): .225 W; Terminal Form: GULL WING; Terminal Position: DUAL;
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;
M39029/56351
Souriau
CONNECTOR ACCESSORY; MIL Conformity: YES; Contact Gender: FEMALE; Insertion Tools: M81969/14-10; Tool Settings: M22520/2-10; DIN Conformity: NO;
M39029/58-360
TE Connectivity's M39029/58-360 is a CRIMP terminal backshell for 22-28 AWG wires, rated at 5A. Ideal for male contacts in Mil-Spec applications, it offers a cross-section area of 0.34 mm2 and ensures secure connections in demanding environments.
M85049/85-08W02
Glenair
CONNECTOR ACCESSORY; MIL Conformity: YES; Material: ALUMINIUM ALLOY; Associated Backshell Military - Specifications: MIL-DTL-38999; Shell Sizes: 08; DIN Conformity: NO;
SS14
Forward International Electronics
RECTIFIER DIODE; Surface Mount: YES; Maximum Operating Temperature: 150 Cel; No. of Elements: 1; No. of Phases: 1; Maximum Output Current: 1 A;
C0603C104K5RACAUTO
KEMET Corporation
KEMET C0603C104K5RACAUTO is a ceramic capacitor with 0.1uF capacitance, rated for 50V. It has X7R temperature characteristics, -55 to 125°C operating range, and ±10% tolerance. Ideal for automotive applications meeting AEC-Q200 standard, it comes in SMT package with matte tin finish and wraparound terminals.
SMBJ18CA
Mde Semiconductor
TRANS VOLTAGE SUPPRESSOR DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
2N2222A
Solid State Devices
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 300 MHz; Maximum Power Dissipation (Abs): .5 W; Maximum Collector Current (IC): .8 A;
LM107H
Linear Technology
LM107H by Linear Technology is an Operational Amplifier with a max input offset voltage of 3000uV, common mode reject ratio of 96dB, and min voltage gain of 50000. It is used in military applications due to its MILITARY temperature grade and BIPOLAR technology for precise signal processing in harsh environments.
NDT2955
Onsemi
NDT2955 by Onsemi is a P-CHANNEL FET with 60V DS Breakdown Voltage, ideal for SWITCHING applications. It features a max IDM of 15A and EAS of 174mJ, suitable for ENHANCEMENT MODE operation. With a compact SMALL OUTLINE package and -55 to 150 °C operating range, it offers efficient power dissipation up to 3W.
2N7002
Kec
N-CHANNEL; Configuration: SINGLE WITH BUILT-IN DIODE; Surface Mount: YES; Field Effect Transistor Technology: METAL-OXIDE SEMICONDUCTOR; Transistor Application: SWITCHING; Package Body Material: PLASTIC/EPOXY;
MMBT2222ALT1G
NPN; Configuration: SINGLE; Surface Mount: YES; Nominal Transition Frequency (fT): 300 MHz; Maximum Power Dissipation (Abs): .3 W; Maximum Collector Current (IC): .6 A;
LM555CMX
National Semiconductor
PULSE; RECTANGULAR; Temperature Grade: COMMERCIAL; No. of Terminals: 8; Package Code: SOP; Package Shape: RECTANGULAR; Surface Mount: YES;
Db Lectro
Fairchild Semiconductor
MURS160T3G
MURS160T3G by Onsemi is a single rectifier diode with a max output current of 2A and max repetitive peak reverse voltage of 600V. It has a fast recovery time of 0.075us, making it suitable for high voltage applications. The diode operates in temperatures ranging from -65 to 175°C, ideal for power systems requiring ultra-fast response.
2-320383-1
RING TERMINAL; Wire Gauge: 2 AWG; Terminal Gender: FEMALE; Wire Cross Section: 42.4 mm2;
1754449
Phoenix Contact
Phoenix Contact 1754449 is a Barrier Strip Terminal Block with 2.5mm2 wire cross section, rated for 12A current and 320V voltage. It has CB, CSA, CUL, EAC, UL, VDE safety approvals and uses screw fastening method. Ideal for connecting 12 AWG wires in various industrial applications.
172777-1
TAB TERMINAL; Wire Gauge: 14 AWG; Terminal Gender: MALE; Safety Approval: UL; Wire Cross Section: 2 mm2;
2-36932-2
RING TERMINAL; Safety Approval: UL; Wire Cross Section: 117 mm2; Terminal Gender: FEMALE; No. of Ways: 1;
41480
Tyco Electronics Amp
TAB TERMINAL; Terminal Gender: MALE; Manufacturer Series: 41480;
2002-2211/1000-410
Wago
MODULAR TERMINAL BLOCK;
1546163-1
MODULAR TERMINAL BLOCK; Manufacturer Series: 1546163;
2092-1323
BARRIER STRIP TERMINAL BLOCK;
1843622
Phoenix Contact 1843622 is a modular terminal block with 4 ways, rated for 8A current and 160V voltage. It has UL, VDE, CSA safety approvals and accepts wire gauge up to 15 AWG. Ideal for board mounting applications, it features a fastening method of solder and accommodates wire cross sections of 1.5 mm².
190070040
Molex
PUSH-ON TERMINAL; Wire Gauge: 10 AWG; Manufacturer Series: 19007; Terminal Gender: FEMALE;
1888690
The Phoenix Contact 1888690 is a modular terminal block with 4 ways, rated for 16A current and 250V voltage. It features a wire gauge of 14 AWG and wire cross section of 2.5 mm2, fastened by screws on the board. Ideal for industrial applications requiring UL/CSA safety approvals.
2-320569-3
RING TERMINAL; Wire Gauge: 10 AWG; Voltage (Rated): 300 V; Safety Approval: UL; Terminal Gender: FEMALE; No. of Ways: 1;
1792863
Phoenix Contact 1792863 is a BOARD mount STRIP TERMINAL BLOCK with 1.5 mm2 wire cross section, rated for 400V voltage and 12A current. It has CUL, GOST, UL safety approvals and uses SPRING LOADED fastening method. Ideal for connecting 14 AWG wires in applications requiring secure electrical connections.
1945096
The Phoenix Contact 1945096 is a STRIP TERMINAL BLOCK with 2 ways, rated for 250V and 8A. It is mounted on BOARD using CONNECTOR fastening method. This terminal block has safety approvals from CUL, EAC, and UL, making it ideal for various industrial applications requiring secure electrical connections.
MS-25036-108
RING TERMINAL; Additional Features: MATERIAL: POLYAMIDE; Wire Gauge: 14 AWG; Voltage (Rated): 600 V; Wire Cross Section: 2.08 mm2; Safety Approval: CSA; MIL; UL;
1703492
5015
Zierick Manufacturing
TAB TERMINAL; Terminal Gender: MALE;
619
MODULAR TERMINAL BLOCK; Fastening Method: SCREW; Additional Features: NYLON; Wire Gauge: 8 AWG; Voltage (Rated): 300 V; Manufacturer Series: 619;
51863-3
RING TERMINAL; Wire Gauge: 20 AWG; Voltage (Rated): 300 V; Terminal Gender: FEMALE; Wire Cross Section: .6 mm2; Safety Approval: UL;
2-34173-1
RING TERMINAL; Wire Gauge: 10 AWG; Voltage (Rated): 600 V; No. of Ways: 1; Wire Cross Section: 6 mm2; Safety Approval: UL;
Partstack™ will investigate all reported instances of potential suspect/counterfeit part listings.
18721-50
Beau Interconnect
BARRIER STRIP TERMINAL BLOCK; Mounting Type: CABLE; Fastening Method: SCREW; Additional Features: PANEL MOUNT, PHENOLIC, 94V-0; Wire Gauge: 12 AWG; Voltage (Rated): 300 V;
18722-49
1872249
BARRIER STRIP TERMINAL BLOCK; Mounting Type: CONNECTOR; Fastening Method: SCREW; Additional Features: STANDARD: UL 94V-0, PA; Wire Gauge: 12 AWG; Voltage (Rated): 320 V;
1872130
STRIP TERMINAL BLOCK;
1872061
BARRIER STRIP TERMINAL BLOCK; Mounting Type: CONNECTOR; Fastening Method: SCREW; Additional Features: STANDARD: UL 94V-0, PA; Wire Gauge: 16 AWG; Voltage (Rated): 160 V;
1872142
1872143
1872017
1872032
1872087
1872127
1872059
1872139
1872029
1872090
1872045
1872100
1872101
BARRIER STRIP TERMINAL BLOCK; Mounting Type: BOARD; Fastening Method: CONNECTOR; Additional Features: STANDARD: UL 94V-0, PBT; Wire Gauge: 15 AWG; Voltage (Rated): 160 V;
18721-45
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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