The SP1255PUTG from Hamlin/Littelfuse is a high-performance transient voltage suppressor (TVS) diode designed specifically for circuit protection in demanding automotive and USB OTG applications. This compact surface-mount device addresses critical design challenges in modern electronics where space constraints, electromagnetic interference, and voltage transients threaten sensitive components. The device features a steering (rail-to-rail) topology with three unidirectional channels, providing comprehensive protection across multiple signal lines simultaneously while maintaining signal integrity through its exceptionally low capacitance of 0.5pF at 1MHz, making it ideal for high-speed data interfaces where parasitic capacitance can degrade performance.
Housed in a miniature 6-UFDFN exposed pad package measuring just 1.8x2mm, this TVS diode delivers robust protection with a 4V typical reverse standoff voltage, 4.5V minimum breakdown voltage, and 8.5V maximum clamping voltage at peak pulse current. It can handle peak pulse currents of 2A (8/20μs waveform), effectively shunting dangerous voltage spikes away from protected circuits. The device operates reliably across the extended automotive temperature range of -40°C to 125°C junction temperature, meeting stringent AEC-Q101 automotive qualification standards and RoHS3 compliance requirements for environmental responsibility.
As part of the SP1255P automotive series, this component excels in protecting sensitive automotive electronics such as infotainment systems, advanced driver assistance systems (ADAS), and USB charging ports from electrostatic discharge (ESD), electrical fast transients (EFT), and other voltage anomalies common in vehicle electrical environments. The power line protection capability ensures comprehensive safeguarding of both data and power lines. Available in tape and reel packaging with 23,200 units per reel, it's optimized for high-volume automated manufacturing processes. Equivalent or alternative models to consider include other devices within the SP1255P series, as well as comparable automotive-grade TVS diode arrays from manufacturers like STMicroelectronics (ESDCAN series), Texas Instruments (TPD series), Nexperia (PESD series), and ON Semiconductor (NUP series) that offer similar voltage ratings, channel configurations, and automotive qualifications.
SP1255PUTG (1)
SP1255PUTG Key Technical Attributes
Manufacturer: Hamlin / Littelfuse
Manufacturer Part Number: SP1255PUTG
Series: Automotive, AEC-Q101, SP1255P, SPA
SP1255PUTG Packing Size
Package / Case: 6-DFN (1.8x2), 6-UFDFN Exposed Pad
Supplier Device Package: 6-DFN (1.8x2); Tape & Reel (TR)
Material: Standard industry-grade plastic, ROHS3 Compliant
Pin Configuration: 6 pins, surface mount layout
Thermal Characteristics: Operating temperature range of -40°C to 125°C (TJ), appropriate for demanding environments
Electrical Properties: Reverse standoff voltage of 4V (Max), breakdown voltage from 4.5V (Min), maximum clamping voltage of 8.5V, peak pulse current capacity of 2A (8/20s), and an extremely low capacitance of 0.5pF @ 1MHz
SP1255PUTG Application
This TVS diode is specially designed for automotive system protection and is ideal for safeguarding sensitive components in USB OTG interfaces. It is compatible with automotive-grade requirements, making it suitable for integration into vehicle electronics as well as various consumer and industrial USB applications.
SP1255PUTG Features
SP1255PUTG provides advanced transient voltage suppression with rail-to-rail steering diode structure, delivering effective ESD and surge protection for up to 3 unidirectional channels simultaneously. It supports power line protection, maintains exceptionally low capacitance (minimizing impact on high-speed signal integrity), and upholds superior performance in environments with fluctuating voltages. Surface mount configuration and exposed pad design ensure efficient heat dissipation and simplified PCB layout, while the tape & reel packaging supports automated manufacturing processes. The AEC-Q101 qualification certifies it for rigorous automotive standards, providing reliability and stability during extended operation. Its compact 6-DFN (1.8x2mm) package allows for space-saving PCB arrangement, and robust construction ensures consistent electrical and physical characteristics.
SP1255PUTG Quality and Safety Features
The device is ROHS3 Compliant, meeting stringent environmental and safety regulations. Compliance with AEC-Q101 standards guarantees reliability, thermal stability, and extended durability, even under harsh automotive conditions. The part offers robust power line protection and consistent overvoltage suppression, safeguarding downstream electronics.
SP1255PUTG Compatibility
SP1255PUTG is fully compatible with automotive systems requiring AEC-Q101 qualified TVS diodes and with USB OTG interfaces for portable electronics. It can be integrated into both legacy and modern PCB layouts taking advantage of the 6-DFN surface mount footprint. Its broad parameter compatibility simplifies the upgrade of existing products with enhanced safety and performance.
SP1255PUTG Datasheet PDF
For the most authoritative and up-to-date technical specifications, functional diagrams, and detailed application notes of SP1255PUTG, please download the official datasheet from our website. Our datasheet repository is the trusted reference for your design and engineering needs.
Quality Distributor
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