The SP0502BAHTG 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 components from voltage transients and electrostatic discharge (ESD) events.
This compact protection solution addresses critical design challenges in modern electronics where space constraints and reliability 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 provides protection for two separate signal lines within a single package, optimizing board real estate utilization.
The SP0502BAHTG features a reverse standoff voltage of 5.5V maximum and a clamping voltage of 8.5V at peak pulse current, making it ideal for protecting 5V logic circuits and similar voltage rails. The device incorporates two unidirectional channels, allowing independent protection of separate signal paths. Its SOT-23-3 package (also referenced as TO-236-3 or SC-59) measures just 2.9mm x 1.3mm, enabling integration into space-constrained applications. The operating temperature range spans from -40°C to 85°C, ensuring reliable performance across industrial and commercial temperature environments. The device is RoHS3 compliant, meeting current environmental regulations for lead-free manufacturing.
Primary advantages include ultra-fast response times typical of TVS diodes, low leakage current during normal operation, and excellent clamping characteristics that provide predictable protection levels. The surface-mount configuration facilitates automated assembly processes, while the tape and reel packaging supports high-volume manufacturing requirements. The device's low capacitance characteristics make it suitable for high-speed signal protection without significantly impacting signal integrity.
Compatibility extends across various voltage domains, particularly 3.3V and 5V digital systems, analog circuits, and mixed-signal applications. The device integrates seamlessly with microcontrollers, digital signal processors, communication interfaces, and other semiconductor devices requiring ESD and transient protection.
Application areas encompass general-purpose circuit protection across multiple industries and product categories. Common implementations include consumer electronics such as smartphones, tablets, and portable devices where ESD protection is critical. Industrial applications benefit from the device's robust protection in automation systems, measurement equipment, and control circuits. Communication equipment, including networking hardware, telecommunications devices, and data transmission systems, utilize these TVS diodes to protect sensitive interface circuits. Automotive electronics increasingly rely on such protection devices for ECU circuits, infotainment systems, and sensor interfaces where electrical transients are common.
Regarding equivalent models, the SP05 and SPA series designation indicates this device is part of a broader family of similar protection components. Alternative models within the same series may include variations with different voltage ratings, channel configurations, or package options. Competitive equivalents from other manufacturers might include similar TVS diodes from companies like ON Semiconductor, STMicroelectronics, Vishay, or Nexperia, typically offering comparable voltage ratings and package configurations. However, specific equivalent part numbers would require cross-referencing based on exact electrical specifications, as protection device selection is highly dependent on precise voltage thresholds, clamping characteristics, and application requirements. When considering alternatives, engineers should verify that replacement devices meet identical electrical specifications, particularly reverse standoff voltage, clamping voltage, and peak pulse current ratings to ensure equivalent protection performance.
SP0502BAHTG (1)
SP0502BAHTG Key Technical Attributes
SP0502BAHTG
SOT-23-3 Package
Surface Mount
SP0502BAHTG Packing Size
This product is supplied in a SOT-23-3 package, which belongs to the TO-236-3, SC-59 standard case codes. The device is delivered in Tape & Reel (TR) packaging, making it highly suitable for automated assembly processes in mass production. The SOT-23-3 small-outline footprint ensures a compact solution for space-sensitive circuit boards. It utilizes high-quality, RoHS3-compliant materials, ensuring both environmental safety and excellent thermal and electrical reliability. The pin configuration features three terminals, allowing straightforward integration into PCB layouts. The device offers reliable thermal characteristics, maintaining functionality over an operating temperature range from -40°C to 85°C.
SP0502BAHTG Application
The SP0502BAHTG is designed for general-purpose transient voltage suppression in sensitive circuits. It is particularly used for electrostatic discharge (ESD) protection in data lines, signal lines, and other interfaces that require robust protection in consumer, industrial, and communication electronics.
SP0502BAHTG Features
This model offers 2 independent unidirectional channels. It provides a reverse standoff voltage (maximum 5.5V), and clamps voltages up to 8.5V at peak pulse current. As a Zener-type TVS diode, it responds rapidly to suppress voltage transients, ensuring connected circuits are shielded from damaging surges. The device is non-conducting under normal operating conditions, activating only during overvoltage events, which ensures low leakage current and high energy efficiency. Its surface-mount design simplifies automated placement and enhances system reliability. By not supporting power line protection, it is specifically optimized for data and signal lines. Enhanced ESD robustness makes it ideal for protecting modern high-speed interconnections.
SP0502BAHTG Quality and Safety Features
The SP0502BAHTG meets RoHS3 compliance levels, ensuring that it is free from lead and other hazardous substances, aligning with the latest industry environmental standards. It is produced according to the stringent quality control processes defined by Littelfuse, known for their reliability in circuit protection. The device offers excellent clamping capability and high surge handling for sensitive electronics, contributing to the broader safety of your electronic systems.
SP0502BAHTG Compatibility
Compatible with standard SOT-23-3 (TO-236-3, SC-59) footprints, the SP0502BAHTG fits effortlessly into a vast array of modern circuit boards. Its general-purpose design and unidirectional protection capabilities make it suitable for use in telecommunication equipment, microcontroller inputs, sensors, portable devices, and consumer electronics. The 5.5V reverse standoff range and 8.5V clamping voltage allow flexible implementation in a variety of 5V and lower-voltage interface environments.
SP0502BAHTG Datasheet PDF
Our website provides the most authoritative and up-to-date datasheet available for the SP0502BAHTG product model. For complete technical specifications, mechanical drawings, and detailed application guidance, customers are strongly encouraged to download the datasheet directly from this page.
Quality Distributor
IC-Components stands as a premium authorized distributor for Hamlin / Littelfuse products worldwide. We guarantee genuine components with full manufacturer traceability and support. Discover competitive prices, guaranteed supply chain integrity, and exclusive customer service by requesting a quote on our website today—IC-Components is your trusted source for SP0502BAHTG and all high-quality Littelfuse circuit protection products.
