1.5KE91A-E3/54 TVS - Diodes by Vishay

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 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.

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.

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.

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.

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.

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 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.

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.

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.

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.

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.

Select the component category that best matches your application, such as resistor, capacitor, diode, or connector. This classification helps narrow down the correct part family and ensures compatibility with your circuit design. Verify the type against the datasheet to avoid mismatches.

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.

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.

Manufacturing technology or process used for the component, such as thin film, thick film, or semiconductor process. Affects performance, stability, and cost. Confirm the technology matches your application requirements and environmental conditions.

Describes the physical configuration of the component's leads or pads, such as through-hole, surface mount, or gull-wing. This affects PCB layout, soldering process, and mechanical fit. Confirm compatibility with your assembly method and footprint.

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.

Describes the method used to connect the component to the circuit board, such as solder, press-fit, or wire wrap. This affects assembly processes, reliability, and repairability. Check the termination type against your PCB footprint and soldering process to ensure compatibility.

Lists any extra characteristics or capabilities beyond the standard specifications, such as built-in protection, special mounting options, or enhanced performance. Review these features to ensure they meet your application's specific needs and compare them across similar parts.

Specifies the metal coating applied to the contact surfaces of connectors, switches, or relays. This finish affects conductivity, corrosion resistance, and durability. Engineers should verify the plating material and thickness against the datasheet to ensure reliable performance in the intended environment.

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.

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.

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.

Total number of pins or terminals on the component package. Essential for footprint design, PCB layout, and connector mating. Verify against the datasheet to ensure compatibility with your board and assembly process.

Specifies whether the component or signal has a defined positive and negative orientation, such as for diodes, electrolytic capacitors, or connectors. Incorrect polarity can cause failure or unsafe operation. Always check the datasheet and board markings before installation.

Specify the typical end-use scenarios for this electronic component, such as consumer electronics, automotive, industrial, or telecommunications. This helps engineers quickly assess suitability for their design. Verify against the datasheet's application section.

Indicates how the component's case or package is electrically connected, such as to ground, a supply rail, or left floating. This affects thermal management, shielding, and circuit isolation. Always confirm with the datasheet to ensure proper PCB layout and avoid unintended shorts or noise coupling.

Indicates the product series or family, grouping components with similar design and specifications. Helps identify compatible parts and compare within a product line. Verify the series against the datasheet to ensure correct application.

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

Maximum power that a component can withstand for a short duration during a transient event. Compare this rating with the expected surge in your circuit to ensure reliability. Verify against the datasheet for pulse duration and waveform conditions.

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.

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.

Specifies the voltage range within which the component operates correctly. Check the datasheet to ensure your power supply meets the minimum and maximum limits, as exceeding them can damage the device or cause malfunction.

This is the maximum reverse voltage the device can withstand without entering breakdown. It defines the safe operating limit for TVS diodes and similar protection components. Engineers compare this value to the circuit's normal operating voltage to ensure adequate protection margin. Always verify against the datasheet for your specific application.

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.

Indicates the maximum voltage the component can withstand or operate at, depending on context. Critical for ensuring the part is not overstressed in your application. Always compare with your circuit's voltage levels and consider transient spikes.

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.

Semiconductor material used in the diode, such as silicon, germanium, or gallium arsenide. Affects forward voltage, speed, and temperature behavior. Choose based on your application's voltage, current, and switching requirements. Verify with datasheet specifications.

Indicates whether the component is designed to protect power supply lines from overvoltage or overcurrent events. Essential for ensuring system reliability in industrial and automotive applications. Confirm the protection level and response time in the datasheet.

Specifies the current level applied during parameter measurement. Compare this value when evaluating test conditions across similar components. Always verify that the test current matches your application's operating point to ensure datasheet parameters are relevant.

Maximum current that flows through the diode when reverse-biased and off. Compare this value to ensure minimal power loss and proper blocking in circuits. Verify against datasheet for temperature and voltage conditions.

Current that flows through the component when it is in the off-state or reverse-biased. Important for capacitors, diodes, and transistors to minimize power loss and ensure proper isolation. Compare leakage current values to avoid unintended circuit behavior, especially in battery-powered or high-impedance applications. Verify test conditions in the datasheet.

Highest current the device can handle for a brief surge, such as inrush or lightning. Essential for power supply and protection circuits. Always compare with your system's surge profile and check the datasheet for duration and repetition rate.

Maximum current the component can withstand during a short pulse event without damage. Compare this rating with your circuit's transient conditions to ensure reliable operation. Verify against the datasheet for pulse duration and duty cycle limits.

Voltage at which the diode begins to conduct in reverse bias, leading to breakdown. Critical for selecting diodes in rectifier and protection circuits. Ensure this voltage exceeds your maximum reverse voltage with margin. Check datasheet for tolerance and temperature effects.

Maximum power the component can dissipate during a short pulse, such as a transient voltage surge. Critical for TVS diodes and suppressors to ensure they can handle expected surges without damage. Compare this rating with your system's transient energy and verify pulse duration in the datasheet.

Specifies the voltage level at which a protection device begins to conduct and limit transient overvoltages. Compare this value with the circuit's maximum allowable voltage to ensure adequate protection. Verify against the datasheet for precise clamping characteristics under specified test conditions.

Maximum reverse voltage the component can withstand without conducting significant current. For TVS diodes and rectifiers, this is the voltage below which the device remains off. Ensure this voltage is higher than the normal operating voltage to avoid unintended conduction, and check the breakdown voltage in the datasheet.

Maximum clamping voltage at the peak pulse current (Ipp) for TVS diodes or varistors. This is the voltage across the device during a transient event. Ensure it is below the protected circuit's maximum rating to prevent damage. Critical for selecting surge protection components.

Voltage at which the device starts conducting in reverse, marking its safe operating limit. Essential for selecting diodes and transistors for high-voltage applications. Always check this parameter against your circuit's maximum reverse voltage.

Maximum voltage the component can withstand before breakdown occurs. Essential for ensuring safe operation in high-voltage circuits. Verify this rating against your circuit's worst-case voltage spikes to prevent failure and ensure long-term reliability.