2N3904BU Transistors - Bipolar (BJT) - Single от ON Semiconductor

Lifecycle status of the part, such as active or obsolete. Indicates availability and long-term support from the manufacturer. Check this before design-in to avoid last-time buys or supply disruptions. Verify with the datasheet or distributor for current status.

Specifies how the component is attached to the PCB, such as through-hole or surface mount. This affects assembly processes, thermal performance, and mechanical strength. Buyers should verify compatibility with their manufacturing capabilities and design requirements.

Shows whether the component complies with the EU REACH regulation. Essential for legal market access in Europe. Check the manufacturer's latest statement to confirm that no substances of very high concern are present above the threshold.

Export Control Classification Number assigned by the U.S. government. Determines whether the component requires an export license. Essential for international trade compliance. Verify the ECCN with the manufacturer or supplier before shipping to avoid legal issues.

Indicates whether the component is manufactured without lead, complying with RoHS and similar regulations. Check this attribute to ensure environmental compliance for your market. Verify against the datasheet for exact material declarations.

Indicates the form of delivery for the component, such as tape and reel, tube, or tray. This affects handling, storage, and assembly processes. Verify the packaging type matches your production requirements and equipment compatibility.

Current stage in the product's lifecycle, such as Active, Obsolete, or End of Life. This indicates availability and long-term supply risk. Check this before designing in a part to ensure it will be available for your product's production lifetime.

Published indicates the date when the product data was released or updated in the catalog. It helps buyers assess the freshness of the information and whether the component is current or possibly obsolete. Check the datasheet for the latest revisions.

Indicates the typical duration from order confirmation to shipment from the manufacturer's facility. This helps you plan production schedules and inventory. Verify current lead times with your distributor or supplier, as they may vary based on order quantity, product availability, and market conditions.

Describes the internal arrangement of components, such as resistor networks or switch contacts. This affects the circuit topology and pinout. Engineers must verify this configuration against the datasheet to ensure correct integration into the PCB layout and proper functionality.

Identifies the company that designed and produced the component. Buyers often filter by manufacturer to ensure brand reliability, quality standards, and supply chain consistency. Verify the manufacturer against the datasheet and official packaging to avoid counterfeit parts.

Operating frequency of the component, typically the clock or switching frequency. This determines the speed of operation and affects power dissipation and signal integrity. Verify the frequency range against your application's requirements and the datasheet specifications.

Lists the product categories or classifications assigned to this component, such as connectors, capacitors, or modules. This helps in filtering and comparing similar parts. Review the categories to ensure the component fits your application and to find alternative parts in the same class.

Specifies the intended circuit role, such as switching, amplification, or RF. Engineers compare this to ensure the transistor's characteristics match the design's requirements. Verify against the datasheet's application section before selecting.

Specifies the semiconductor material used in the transistor's active region. This affects electrical characteristics such as switching speed and voltage rating. Verify the material against the datasheet when selecting for high-frequency or high-power applications.

Specifies the ambient temperature range within which the component reliably functions. Compare this with your application's thermal environment to ensure proper operation. Always verify against the datasheet for derating curves and maximum ratings.

A more specific classification within the main product category, such as 'Ceramic Capacitor' under 'Capacitors'. This helps narrow down search results and compare similar components. Use it to filter products with similar characteristics and intended applications.

Maximum power the component can safely dissipate as heat without damage. Exceeding this may cause failure. Check datasheet for thermal resistance and derating curves under your operating conditions.

Indicates if the component is designed to withstand ionizing radiation in space, nuclear, or high-energy physics applications. Compare radiation-tolerant vs. radiation-hardened parts for mission-critical designs. Verify the total ionizing dose (TID) and single-event effect (SEE) ratings in the datasheet.

Indicates whether the component is lead-free per RoHS or other directives. Buyers use this to verify environmental compliance and avoid restricted substances. Always confirm with the datasheet or certificate of compliance.

Specifies how the component attaches to the PCB or assembly, such as surface mount, through-hole, or chassis mount. This affects soldering process, mechanical stability, and thermal performance. Verify compatibility with your board layout and assembly capabilities.

Total number of pins or contacts on the component. This determines the footprint and mating connector requirements. Always match the pin count to your PCB layout and connector specification to ensure proper electrical and mechanical connection.

Position of the terminals on the package, such as dual-in-line, gull-wing, or J-lead. This affects PCB layout, soldering, and thermal performance. Engineers must ensure the terminal position matches the footprint and assembly capabilities of their manufacturing line.

Indicates the total number of electrical connection points on the component, such as pins or pads. This is critical for PCB footprint design and assembly. Verify it matches the package specification to ensure proper soldering and connectivity.

Specifies the maximum continuous current the component can safely carry under specified conditions. Compare this value with your circuit's expected load to ensure reliable operation. Always verify against the datasheet for temperature derating and mounting considerations.

Maximum power the component can safely dissipate as heat without exceeding its thermal limits. Compare this rating with your application's expected power loss to ensure reliable operation. Always verify against the datasheet's derating curves and ambient temperature conditions.

Physical height of the component, measured from the mounting surface to the topmost point. This dimension is critical for clearance in compact assemblies and for ensuring proper fit within enclosures. Always verify against the datasheet for tolerance and mounting considerations.

Indicates the frequency at which the open-loop gain of an amplifier drops to unity. Compare this value when selecting op-amps or RF amplifiers for bandwidth-critical applications. Verify against the datasheet's typical performance curves to ensure adequate gain at your operating frequency.

Specifies the maximum DC voltage the component can safely handle under rated conditions. Engineers compare this to the circuit's operating voltage to ensure adequate margin. Always verify against the datasheet's derating curves for temperature and reliability.

Indicates the specific product subcategories or classifications within the broader component family. Helps narrow down search results and identify the exact type of component needed for your design. Review the subcategory to ensure compatibility with your application.

Specifies the physical length of the component body, typically in millimeters. This dimension is critical for PCB layout and mechanical fit. Verify against the datasheet to ensure proper clearance and alignment in your design.

Indicates whether the semiconductor is N-channel, P-channel, NPN, PNP, or other polarity type. This determines the required gate or base drive voltage and circuit configuration. Verify against the datasheet to ensure compatibility with your application's power supply and control logic.

Minimum DC current gain (hFE) of a bipolar transistor at a specified collector current and voltage. This value indicates the lowest amplification the device guarantees. Engineers compare it to ensure sufficient drive for the load. Always verify against the datasheet for your operating conditions.

Physical package or case type of the component, defining its dimensions, mounting style, and thermal characteristics. Common types include SMD, through-hole, BGA, and QFN. Choose the package that fits your PCB layout and assembly process. Verify the exact package code in the datasheet for footprint compatibility.

Maximum continuous collector current that the transistor can handle without damage. Compare this rating with your circuit's peak current demand. Always verify against the datasheet for thermal limits and derating conditions.

Maximum voltage that can be applied between emitter and base with the collector open. Critical for BJT input stage design. Verify against datasheet to prevent reverse breakdown and ensure reliable operation.

Maximum allowable voltage between collector and emitter with the base terminal open. Exceeding this rating can cause breakdown or permanent damage. Verify against the datasheet for safe operating conditions in your circuit design.

Specifies the maximum voltage that can be applied between collector and emitter without causing breakdown. Critical for power transistors and switching circuits. Verify against datasheet to ensure safe operating margin under worst-case conditions.

Voltage drop across collector-emitter when the device is fully on. Determines conduction losses and efficiency. Lower saturation voltage means less power dissipation. Verify against datasheet for collector current and temperature.

Minimum DC current gain measured at a specified collector current and collector-emitter voltage. This parameter indicates the transistor's amplification capability. Compare it with your circuit requirements and verify the test conditions in the datasheet.

This is the maximum collector-emitter voltage drop when the transistor is fully on at the given base and collector currents. Lower values mean less power loss. Check the datasheet to confirm it meets your circuit's switching and efficiency requirements.

Maximum time required for the device to transition from on-state to off-state after removal of the drive signal. Compare this parameter when designing high-speed switching circuits to ensure it meets your timing requirements. Verify against the datasheet for worst-case conditions.

Maximum time required for a device to turn on from the application of the input signal. This parameter is crucial for timing analysis in switching circuits and power supplies. Compare with your system's timing budget and verify against the datasheet under specified conditions.

Transition frequency is the frequency at which the transistor's current gain falls to unity. It indicates the upper limit for useful amplification. Engineers compare this value to ensure the device meets bandwidth requirements for RF and high-speed switching applications. Always verify against the datasheet.

Maximum voltage that can be applied between collector and base with the emitter left open. This breakdown rating is critical for circuit design. Always verify it against the datasheet to prevent damage from overvoltage conditions.

Physical width of the component body, typically in millimeters. Essential for PCB footprint design and mechanical fit. Verify against the datasheet to ensure proper clearance and compatibility with your board layout and enclosure.

Specifies the physical weight of the electronic component, important for logistics, shipping cost, and mechanical design. Verify the exact weight in the datasheet or packaging information, as it may vary with packaging type and quantity.

Identifies the core product family without package, grade, or option suffixes. Use this to compare equivalent components across manufacturers and to locate the primary datasheet. Verify the full ordering code against the manufacturer's specification before design-in.

The manufacturer's specific code for the package type, such as SOIC-8 or 0603. Use this to confirm the physical dimensions, pinout, and footprint compatibility with your PCB design. Cross-reference with the datasheet for exact mechanical drawings.

The unique part number assigned by the original component manufacturer. Use this to cross-reference datasheets, verify specifications, and ensure the exact component matches your design requirements. Always confirm the number against the manufacturer's official documentation.

Specifies the plating material on component terminals, affecting solderability, corrosion resistance, and long-term reliability. Compare finishes like tin, gold, or silver for your assembly process and environmental requirements. Verify against datasheet for compliance.

Indicates how many independent functional sections are integrated into a single component package. This matters when comparing multi-channel devices or resistor networks. Always verify the exact element count against the datasheet to ensure it matches your circuit design requirements.

Specifies the semiconductor technology used in the transistor, such as BJT, MOSFET, or IGBT. This determines the device's switching characteristics, drive requirements, and application suitability. Verify the exact type against the datasheet to ensure compatibility with your circuit design.

This code indicates the terminal finish material per JESD-609 standard. It helps identify the plating type for soldering compatibility and environmental compliance. Check the datasheet for the exact code and its meaning.

Indicates whether the component complies with the EU RoHS directive restricting hazardous substances. Buyers should verify this status for regulatory compliance and market access. Check the datasheet or certificate for exact compliance details.

Indicates whether the product contains substances of very high concern as per the REACH regulation. Buyers should verify this for compliance with EU environmental standards, especially when exporting to Europe. Check the manufacturer's declaration or datasheet for accurate SVHC status.

Export Control Classification Number assigned by the U.S. Commerce Department. It determines export licensing requirements for electronic components. Verify the ECCN against the manufacturer's datasheet or export compliance documentation before shipping internationally.

Indicates the floor life of a component before it must be baked prior to soldering. Higher levels require stricter handling and shorter exposure times. Verify the MSL rating in the datasheet to ensure proper storage and assembly conditions.

Harmonized Tariff Schedule of the United States code for customs classification. Essential for import/export documentation and duty calculation. Verify the correct code with a trade specialist to avoid customs delays.