Littelfuse Inc. S4040NQRP

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.

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.

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

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.

RMS Current (Irms) refers to the Root Mean Square value of the alternating current flowing through an electronic component or circuit. It is a measure of the effective current that produces the same heating effect as the equivalent DC current. In AC circuits, the current continuously changes direction, so using the RMS value helps in calculating power dissipation and determining the component's capability to handle the current without overheating. RMS Current is crucial in selecting components like resistors, capacitors, and inductors to ensure they can safely operate within their specified current ratings.

the minimum current which must pass through a circuit in order for it to remain in the 'ON' state.

Trigger Device Type is a parameter in electronic components that refers to the type of device or mechanism used to initiate a specific action or function within the component. This parameter specifies the specific trigger device, such as a sensor, switch, or signal input, that is required to activate or control the operation of the component. Understanding the trigger device type is crucial for proper integration and operation of the electronic component within a larger system or circuit. By specifying the appropriate trigger device type, engineers and designers can ensure that the component functions correctly and responds to the intended input signals or conditions.

Voltage - Gate Trigger (Vgt) (Max) refers to the maximum voltage level required to trigger the gate of a semiconductor device, such as a thyristor or triac, into the conductive state. When the gate receives this voltage, it initiates the device's conduction, allowing current to flow between its anode and cathode. Exceeding this voltage can lead to unwanted behavior or damage to the component, making it a critical parameter in designing circuits that utilize these devices. Understanding Vgt is essential for ensuring proper operation and reliability in electronic applications.

The parameter "Current - Non Rep. Surge 50, 60Hz (Itsm)" in electronic components refers to the maximum non-repetitive surge current that a component can withstand without damage during a single surge event at frequencies of 50Hz or 60Hz. This parameter is important for assessing the robustness and reliability of the component in handling sudden spikes or surges in current that may occur in the electrical system. It helps in determining the level of protection needed for the component to ensure its longevity and proper functioning in various operating conditions. Manufacturers provide this specification to guide engineers and designers in selecting the appropriate components for their applications based on the expected surge current levels.

Current - Gate Trigger (Igt) (Max) refers to the maximum gate trigger current required to activate a semiconductor device, such as a thyristor or triac. It is the minimum current that must flow into the gate terminal to ensure that the device turns on and conducts current between its anode and cathode. Exceeding this value can lead to unnecessary power consumption, while insufficient current may prevent the device from turning on effectively. This parameter is crucial for circuit design, as it influences the selection of gate driving circuits.

The parameter "Current - On State (It (RMS)) (Max)" refers to the maximum root mean square (RMS) current that an electronic component, typically a semiconductor device like a thyristor or a transistor, can handle while in the on state without sustaining damage. This value is crucial for ensuring that the component operates safely under load conditions. Exceeding this maximum rating can result in overheating, degradation, or failure of the component over time. It is an important specification for designers to consider when selecting components for a circuit to ensure reliable performance.

The parameter "Current - On State (It (AV)) (Max)" in electronic components refers to the maximum average current that a component, typically a switch or semiconductor device, can handle while in the 'on' state without overheating or failing. This rating is crucial for ensuring reliable operation in circuits where the component is subjected to continuous current flow. Exceeding this maximum value can lead to damage or malfunction, so it is important for designers to consider it when selecting components for their applications.

SCR Type refers to a category of semiconductor devices specifically designed to control and manage electrical energy in electronic circuits. It stands for Silicon Controlled Rectifier, which is a type of thyristor that can switch and control voltage and current flow. SCRs are commonly used in applications such as motor control, power regulation, and lighting control due to their ability to handle high power loads. The SCR Type includes variations like standard SCRs, gate turn-off thyristors, and triacs, each serving specific purposes in power electronics.

The parameter "Voltage - On State (Vtm) (Max)" refers to the maximum voltage drop across a semiconductor device when it is in the on state and conducting current. It is a critical specification for devices such as transistors, diodes, and thyristors, as it affects the overall power loss and efficiency of the component during operation. A lower Vtm value indicates better efficiency, as it leads to reduced power dissipation in the form of heat. This parameter is essential for engineers to consider when designing circuits that require low voltage drops for optimal performance.

The parameter "Current - Off State (Max)" refers to the maximum current that can flow through an electronic component when it is in the off state, typically when the component is not conducting electricity. This specification is important for components such as transistors, diodes, and switches, as it indicates the maximum leakage current that can occur when the component is supposed to be non-conductive. Exceeding this maximum off-state current can lead to unintended power consumption, overheating, or malfunction of the component. Designers need to consider this parameter to ensure proper functioning and reliability of the electronic circuit.

Radiation hardening is the process of making electronic components and circuits resistant to damage or malfunction caused by high levels of ionizing radiation, especially for environments in outer space (especially beyond the low Earth orbit), around nuclear reactors and particle accelerators, or during nuclear accidents or nuclear warfare.

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.