The SP0502BAHT is a specialized transient voltage suppressor (TVS) diode manufactured by Hamlin/Littelfuse, designed to provide robust circuit protection in electronic systems. This surface-mount device belongs to the circuit protection category, specifically engineered as a Zener-type TVS diode that safeguards sensitive electronic components from voltage transients and electrostatic discharge (ESD) events.
This compact protection solution addresses critical design challenges in modern electronics where space constraints and reliable protection are paramount concerns. The device effectively clamps dangerous voltage spikes that could otherwise damage downstream components, while maintaining a low profile footprint suitable for high-density circuit board layouts. Its dual-channel configuration allows protection of two separate signal lines within a single component, optimizing board real estate utilization.
The SP0502BAHT features a reverse standoff voltage of 5.5V maximum, ensuring normal circuit operation remains unaffected while providing rapid response to overvoltage conditions. When triggered, the device clamps voltages to a maximum of 8.5V, effectively limiting potentially destructive energy. The component operates reliably across a wide temperature range from -40°C to 85°C, making it suitable for both commercial and industrial applications. Its unidirectional design with two channels provides targeted protection for specific signal paths, while the SOT-23-3 package (also known as TO-236-3 or SC-59) offers excellent thermal performance and mechanical stability.
The primary advantages of this TVS diode include its fast response time to transient events, low clamping voltage for enhanced protection margins, compact form factor enabling dense PCB layouts, and excellent reliability across varying environmental conditions. The surface-mount configuration facilitates automated assembly processes, reducing manufacturing costs and improving production efficiency. The device's general-purpose design makes it versatile across numerous applications while maintaining consistent performance characteristics.
Regarding compatibility, the SP0502BAHT integrates seamlessly with standard PCB assembly processes and is compatible with lead-free soldering profiles, though it should be noted that this particular model is RoHS non-compliant. The SOT-23-3 package is industry-standard, ensuring compatibility with existing footprints and assembly equipment. The device comes supplied in tape and reel packaging, facilitating high-volume automated placement.
Application areas for this TVS diode span across general-purpose electronics protection, including consumer electronics, telecommunications equipment, computing devices, automotive electronics, and industrial control systems. It proves particularly valuable in protecting I/O ports, data lines, power supply inputs, and other vulnerable circuit nodes from ESD and transient voltage events. The device is commonly implemented in portable devices, communication interfaces, sensor circuits, and any application requiring reliable, space-efficient voltage protection.
Equivalent and alternative models within the SP050xBA series include various voltage ratings and configurations that address different protection requirements. Alternative manufacturers offer comparable solutions such as the PESD5V0S2BT from Nexperia, which provides similar voltage ratings and package options. Other equivalent models include the SP0503BAHT for three-channel protection, SP0504BAHT for four-channel applications, and various voltage variants within the same series like SP0501BAHT and SP0505BAHT offering different standoff voltages. Competitive alternatives from other manufacturers include Bourns' CDSOT23-SM712, ON Semiconductor's ESD9B5.0ST5G, and STMicroelectronics' ESDA series, all providing similar protection characteristics in comparable packages. When selecting alternatives, consideration should be given to specific voltage requirements, channel count, package preferences, and compliance requirements to ensure optimal system protection and compatibility.
SP0502BAHT (1)
SP0502BAHT Key Technical Attributes
SP0502BAHT
Littelfuse
TVS DIODE, 5.5VWM, 8.5VC, SOT23-3
SP0502BAHT Packing Size
The SP0502BAHT is provided in a compact SOT-23-3 (also referred to as TO-236-3, SC-59) surface mount package, specifically designed for automated PCB assembly. The packaging utilized is tape & reel (TR), supporting high-volume manufacturing environments. This SOT-23-3 configuration features three pins and ensures efficient board space utilization. The device is optimized for effective thermal dissipation within the temperature range of -40°C to +85°C (TA). Its electrical characteristics include a reverse standoff voltage (Vwm) of 5.5V (max), and a maximum clamping voltage (Vc) of 8.5V under surge. It offers unidirectional protection on two channels.
SP0502BAHT Application
This TVS diode is intended for general purpose applications where sensitive electronic components require transient voltage suppression. It is ideal for use in microprocessors, control lines, data lines, and other circuit areas exposed to electrostatic discharge (ESD) or transient voltage threats, but does not provide power line protection. Its compact design and reliable performance make it suitable for commercial electronics, smart devices, industrial control systems, and telecommunications equipment.
SP0502BAHT Features
The SP0502BAHT belongs to the Littelfuse SP050xBA series of TVS diodes, utilizing Zener technology to deliver effective protection from voltage transients caused by ESD and EFT. It supports protection for two unidirectional channels simultaneously, offering a low profile, surface-mount solution that minimizes board footprint while maintaining robust circuit shielding. Operating over a temperature range of -40°C to +85°C, it maintains consistent electrical characteristics and provides fast response times to transient events. While compact in SOT-23-3 packaging, the device effectively clamps high-energy spikes up to a maximum of 8.5V. Its compatibility with automated surface-mount processes and tape & reel packaging further enhances productivity and assembly efficiency.
SP0502BAHT Quality and Safety Features
Littelfuse’s robust quality control ensures high reliability and consistent performance across each SP0502BAHT device. However, customers should note that this device is RoHS non-compliant, which may require consideration for use in end applications subject to environmental and safety regulations. The TVS diode’s high surge robustness safeguards sensitive circuits, reducing the risk of damage from voltage transients and enhancing system safety and operational uptime.
SP0502BAHT Compatibility
SP0502BAHT is broadly compatible with general purpose electronic and industrial control systems requiring TVS diode protection within its specified voltage and temperature ratings. It is designed to replace or supplement TVS diodes in SOT-23-3 footprints, offering flexibility to circuit designers for integration into both new and existing projects.
SP0502BAHT Datasheet PDF
For the most in-depth, authoritative technical information, customers are encouraged to download the latest datasheet PDF for SP0502BAHT directly from our website. Our datasheet collection is industry-leading, ensuring immediate access to the most complete parameter details, application guidance, and compliance documents. Downloadable from this page, the datasheet ensures you have all the necessary data for your project requirements.
Quality Distributor
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