Littelfuse Inc. USUR1000-502J-06

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.

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.

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

Lead length refers to the distance from the body of an electronic component to the end of its leads or terminals. It is an important specification in component design and packaging, as it affects the ease of soldering, the overall fit within a circuit board, and the electrical performance. Longer leads can facilitate easier connections but may also introduce increased resistance or inductance in high-frequency applications. Proper lead length is crucial for ensuring reliable connections and optimal performance in electronic circuits.

Power - Max is a parameter that specifies the maximum amount of power that an electronic component can handle without being damaged. It is typically measured in watts and indicates the upper limit of power that can be safely supplied to the component. Exceeding the maximum power rating can lead to overheating, malfunction, or permanent damage to the component. It is important to consider the power-max rating when designing circuits or systems to ensure proper operation and longevity of the electronic components.

Tolerance is the percentage of error in the resistor's resistance, or how much more or less you can expect a resistor's actual measured resistance to be from its stated resistance. A gold tolerance band is 5% tolerance, silver is 10%, and no band at all would mean a 20% tolerance.

The parameter "Resistance in Ω @ 25°C" in electronic components refers to the resistance value of the component measured in ohms at a temperature of 25 degrees Celsius. Resistance is a fundamental property of electronic components that determines how much they impede the flow of electric current. The resistance value at 25°C is often provided as a reference point because it is a standard temperature for many electronic applications. This parameter helps engineers and designers understand how the component will behave in a circuit and allows for accurate calculations of current flow and voltage drop.

The parameter "B0/50" in electronic components typically refers to the temperature coefficient of the component's resistance. It indicates how much the resistance of the component changes with temperature. The "B0" part of the parameter represents the resistance value at a reference temperature, often 25 degrees Celsius, while the "50" part represents the temperature coefficient value. A higher B0/50 value indicates a larger change in resistance with temperature, while a lower value indicates a more stable resistance over temperature variations. It is an important parameter to consider when designing circuits that are sensitive to temperature changes.

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