Littelfuse Inc. V421HA40

In electronic components, the term "Mount" typically refers to the method or process of physically attaching or fixing a component onto a circuit board or other electronic device. This can involve soldering, adhesive bonding, or other techniques to secure the component in place. The mounting process is crucial for ensuring proper electrical connections and mechanical stability within the electronic system. Different components may have specific mounting requirements based on their size, shape, and function, and manufacturers provide guidelines for proper mounting procedures to ensure optimal performance and reliability of the electronic device.

The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.

refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.

Terminal Shape in electronic components refers to the physical design of the connection points on the component that allow for electrical connections to be made. These terminals can come in various shapes such as pins, leads, pads, or terminals with specific configurations like surface mount or through-hole. The terminal shape is important as it determines how the component can be mounted on a circuit board or connected to other components. Different terminal shapes are used based on the specific requirements of the electronic circuit design and manufacturing process.

The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.

Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.

In electronic components, the "Series" refers to a group of products that share similar characteristics, designs, or functionalities, often produced by the same manufacturer. These components within a series typically have common specifications but may vary in terms of voltage, power, or packaging to meet different application needs. The series name helps identify and differentiate between various product lines within a manufacturer's catalog.

The "JESD-609 Code" in electronic components refers to a standardized marking code that indicates the lead-free solder composition and finish of electronic components for compliance with environmental regulations.

The "Pbfree Code" parameter in electronic components refers to the code or marking used to indicate that the component is lead-free. Lead (Pb) is a toxic substance that has been widely used in electronic components for many years, but due to environmental concerns, there has been a shift towards lead-free alternatives. The Pbfree Code helps manufacturers and users easily identify components that do not contain lead, ensuring compliance with regulations and promoting environmentally friendly practices. It is important to pay attention to the Pbfree Code when selecting electronic components to ensure they meet the necessary requirements for lead-free applications.

Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.

Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures

Termination in electronic components refers to the practice of matching the impedance of a circuit to prevent signal reflections and ensure maximum power transfer. It involves the use of resistors or other components at the end of transmission lines or connections. Proper termination is crucial in high-frequency applications to maintain signal integrity and reduce noise.

An ECCN (Export Control Classification Number) is an alphanumeric code used by the U.S. Bureau of Industry and Security to identify and categorize electronic components and other dual-use items that may require an export license based on their technical characteristics and potential for military use.

Terminal Finish refers to the surface treatment applied to the terminals or leads of electronic components to enhance their performance and longevity. It can improve solderability, corrosion resistance, and overall reliability of the connection in electronic assemblies. Common finishes include nickel, gold, and tin, each possessing distinct properties suitable for various applications. The choice of terminal finish can significantly impact the durability and effectiveness of electronic devices.

HTS (Harmonized Tariff Schedule) codes are product classification codes between 8-1 digits. The first six digits are an HS code, and the countries of import assign the subsequent digits to provide additional classification. U.S. HTS codes are 1 digits and are administered by the U.S. International Trade Commission.

Capacitance is a fundamental electrical property of electronic components that describes their ability to store electrical energy in the form of an electric field. It is measured in farads (F) and represents the ratio of the amount of electric charge stored on a component to the voltage across it. Capacitors are passive components that exhibit capacitance and are commonly used in electronic circuits for various purposes such as filtering, energy storage, timing, and coupling. Capacitance plays a crucial role in determining the behavior and performance of electronic systems by influencing factors like signal propagation, frequency response, and power consumption.

Voltage - Rated DC is a parameter that specifies the maximum direct current (DC) voltage that an electronic component can safely handle without being damaged. This rating is crucial for ensuring the proper functioning and longevity of the component in a circuit. Exceeding the rated DC voltage can lead to overheating, breakdown, or even permanent damage to the component. It is important to carefully consider this parameter when designing or selecting components for a circuit to prevent any potential issues related to voltage overload.

In electronic components, "Depth" typically refers to the measurement of the distance from the front to the back of the component. It is an important parameter to consider when designing or selecting components for a project, as it determines how much space the component will occupy within a circuit or device. The depth of a component can impact the overall size and layout of the circuit board or enclosure in which it will be installed. It is usually specified in millimeters or inches and is crucial for ensuring proper fit and functionality within the intended application.

The parameter "Resistor Type" in electronic components refers to the specific material and construction of a resistor that determines its electrical properties and performance characteristics. There are various types of resistors available, such as carbon film, metal film, wirewound, and thick film resistors, each with its own advantages and applications. The resistor type affects factors like tolerance, temperature coefficient, power rating, and stability, which are important considerations when selecting a resistor for a particular circuit. Choosing the right resistor type is crucial for ensuring proper functionality and reliability of electronic devices and circuits.

Reach Compliance Code refers to a designation indicating that electronic components meet the requirements set by the Registration, Evaluation, Authorization, and Restriction of Chemicals (REACH) regulation in the European Union. It signifies that the manufacturer has assessed and managed the chemical substances within the components to ensure safety and environmental protection. This code is vital for compliance with regulations aimed at minimizing risks associated with hazardous substances in electronic products.

Voltage - Rated AC is a parameter that specifies the maximum alternating current (AC) voltage that an electronic component can safely handle without being damaged. This rating is crucial for ensuring the proper functioning and longevity of the component within an electrical circuit. It is typically expressed in volts (V) and helps users determine the compatibility of the component with the voltage levels present in the circuit. Exceeding the rated AC voltage can lead to overheating, malfunction, or permanent damage to the component, so it is important to adhere to this specification when designing or using electronic systems.

Rated Power Dissipation (P) is a crucial parameter in electronic components that indicates the maximum amount of power the component can safely dissipate without being damaged. It is typically measured in watts and is important for determining the component's thermal management requirements. Exceeding the rated power dissipation can lead to overheating, reduced performance, or even permanent damage to the component. Designers must carefully consider the rated power dissipation when selecting and using electronic components to ensure reliable operation within specified limits.

Lead pitch in electronic components refers to the distance between the center of one lead (or pin) of a component to the center of the adjacent lead. It is an important parameter to consider when designing and assembling electronic circuits, as it determines the spacing required on a circuit board for proper placement and soldering of the component. Lead pitch is typically specified in millimeters or inches and can vary depending on the type of component, such as integrated circuits, resistors, capacitors, and connectors. Choosing the correct lead pitch ensures proper alignment and connection of components on a circuit board, ultimately affecting the functionality and reliability of the electronic device.

The parameter "Max Voltage Rating (AC)" in electronic components refers to the maximum alternating current (AC) voltage that the component can safely handle without being damaged. This rating is important for ensuring the component's longevity and reliability in a circuit. Exceeding the maximum voltage rating can lead to overheating, breakdown, or even permanent damage to the component. It is crucial to select components with voltage ratings that are suitable for the intended application to prevent malfunctions or safety hazards in the circuit.

Terminal Placement in electronic components refers to the physical location of the terminals or connection points on the component where external electrical connections are made. The placement of terminals is crucial for ensuring proper connectivity and functionality of the component within a circuit. It is important to consider factors such as spacing, orientation, and accessibility of terminals to facilitate easy installation and maintenance. Proper terminal placement also helps in reducing the risk of short circuits or other electrical issues. Overall, terminal placement plays a significant role in the design and usability of electronic components.

The parameter "Max Voltage Rating (DC)" in electronic components refers to the maximum direct current (DC) voltage that the component can safely handle without being damaged. This rating is crucial for ensuring the proper functioning and longevity of the component within an electrical circuit. Exceeding the maximum voltage rating can lead to breakdown or failure of the component, potentially causing damage to the entire circuit. It is important to carefully consider and adhere to the specified max voltage rating when designing or working with electronic circuits to prevent any potential risks or malfunctions.

The parameter "Lead/Base Style" in electronic components refers to the physical configuration of the leads or terminals of the component in relation to its base or body. This parameter describes how the leads are attached to the component and how they are positioned in relation to the base. Common lead/base styles include through-hole, surface mount, gull-wing, J-lead, and many others. Understanding the lead/base style is important for proper installation and connection of the component in a circuit, as different styles may require different soldering techniques or mounting considerations.

Clamping voltage is a term used in electronic components, particularly in devices like diodes and transient voltage suppressors. It refers to the maximum voltage level at which the component can effectively limit or clamp the voltage across its terminals. When the voltage across the component exceeds the clamping voltage, the component conducts and effectively limits the voltage to that level, protecting the circuit from overvoltage conditions. Clamping voltage is an important parameter to consider when selecting components for applications where voltage spikes or surges may occur, as it determines the level at which the component will start to protect the circuit.

Surge current is a peak non repetitive current. Maximum (peak or surge) forward current = IFSM or if(surge), the maximum peak amount of current the diode is able to conduct in forward bias mode.

Capacitance @ Frequency refers to the value of capacitance that a capacitor exhibits when subjected to an alternating current (AC) signal at a specific frequency. This parameter highlights how the capacitor's behavior changes with frequency, as capacitance can vary due to effects like equivalent series resistance (ESR) and loss factors. Typically measured in microfarads (µF) or picofarads (pF), this value is crucial for applications involving signal coupling, filtering, and timing where AC signals are prevalent. Understanding capacitance at different frequencies helps in selecting the right capacitor for specific circuit functions.

The parameter "Varistor Voltage (Max)" refers to the maximum voltage that a varistor can withstand without breaking down. A varistor is a type of electronic component that is used to protect circuits from overvoltage conditions by rapidly changing its resistance in response to voltage fluctuations. When the voltage across a varistor exceeds its maximum rating, it will conduct current and dissipate the excess energy as heat, thereby protecting the circuit. It is important to select a varistor with a maximum voltage rating that is higher than the expected operating voltage to ensure reliable protection against overvoltage events.

In electronic components, "Energy" refers to the amount of electrical power consumed or stored by the component during operation. It is a crucial parameter that determines the efficiency and performance of the component. Energy consumption is typically measured in units such as watt-hours (Wh) or joules (J), while energy storage is often quantified in terms of capacitance or battery capacity. Understanding the energy characteristics of electronic components is essential for designing efficient and reliable electronic systems.

Varistor Voltage (Min) is the minimum voltage at which a varistor begins to conduct significantly and clamp voltage spikes. It is a critical parameter as it indicates the threshold for the protective action of the varistor. When the voltage exceeds this level, the varistor transitions from a high-resistance state to a low-resistance state, providing a path to divert excess current. This feature helps protect electronic circuits from transient voltage surges.

Maximum AC Volts is a parameter that specifies the maximum voltage level that an electronic component can safely handle when operating with an alternating current (AC) input. This parameter is crucial for ensuring the component's reliability and longevity, as exceeding the maximum AC voltage can lead to damage or failure. It is typically expressed in volts and is determined through testing and analysis of the component's electrical characteristics. Designers and engineers must carefully consider the maximum AC volts rating when selecting components for a circuit to prevent overloading and potential hazards.

A varistor is an electronic component that is used to protect circuits from overvoltage conditions. The varistor voltage, also known as the "clamping voltage" or "breakdown voltage," is the voltage level at which the varistor begins to conduct significantly and divert excess current away from the circuit. When the voltage across the varistor exceeds its varistor voltage, the varistor's resistance decreases rapidly, allowing it to absorb the excess energy and protect the circuit components. Varistor voltage is an important parameter to consider when selecting a varistor for a specific application, as it determines the level of overvoltage protection provided by the component.

Clamping current refers to the maximum current that can safely pass through a protective device, such as a surge protector or a transient voltage suppressor, before it begins to conduct and limit the voltage. This current level is crucial for protecting sensitive electronic components from damage during voltage spikes or surges. It ensures that the device will divert excessive current away from the circuit, thereby preventing potential failure of the components being protected.

In electronic components, the parameter "Diameter" typically refers to the measurement of the width of a circular component, such as a resistor, capacitor, or inductor. It is a crucial dimension that helps determine the physical size and fit of the component within a circuit or on a circuit board. The diameter is usually measured in millimeters (mm) or inches (in) and is important for ensuring proper placement and soldering of the component during assembly. Understanding the diameter of electronic components is essential for selecting the right size for a specific application and ensuring compatibility with other components and the overall design of the circuit.

RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.

Lead Free is a term used to describe electronic components that do not contain lead as part of their composition. Lead is a toxic material that can have harmful effects on human health and the environment, so the electronics industry has been moving towards lead-free components to reduce these risks. Lead-free components are typically made using alternative materials such as silver, copper, and tin. Manufacturers must comply with regulations such as the Restriction of Hazardous Substances (RoHS) directive to ensure that their products are lead-free and environmentally friendly.