STMicroelectronics SMBJ13CA-TR

SMBJ13CA-TR STMicroelectronics TVS Diode Product Summary

Transient voltage suppression (TVS) devices are essential components in protecting sensitive electronics from voltage spikes and surges. The SMBJ13CA-TR, part of STMicroelectronics' SMBJxxCA series, is a bidirectional TVS diode designed for robust overvoltage protection in compact surface-mount applications. Key application domains include power supply modules, data lines, and equipment interfaces where IEC compliance and high reliability are required. With its 13V working standoff voltage and 21.5V clamping voltage, the SMBJ13CA-TR is tailored to provide effective surge protection in line-powered and signal applications operating below 600W pulse power.

Electrical Specifications and Performance Data for SMBJ13CA-TR STMicroelectronics TVS Diode

The SMBJ13CA-TR TVS diode delivers a peak pulse power capability of 600W for the 10/1000 μs waveform and up to 4kW for the shorter 8/20μs surge profile, supporting rigorous transient immunity standards. It operates across a broad standoff voltage range, enabling flexible integration into systems with working voltages from 5V to 188V. The bidirectional construction ensures protection for AC and bidirectional DC rails, while low leakage currents (0.2μA at 25°C, 1μA at 85°C) support low standby power designs.

Engineers should note the device’s efficient clamping action—29A peak pulse current at 21.5V clamp voltage—making it suitable for safeguarding input lines against high-energy transients. The planar silicon technology behind the SMBJ series supports stable characteristics at high junction temperatures, with a rated maximum operating Tj of 150°C. The device's dynamic resistance and capacitance figures, outlined in the datasheet curves, allow for accurate simulation of system behavior under surge and ESD events.

Environmental Ratings and Compliance Information for SMBJ13CA-TR STMicroelectronics TVS Diode

The SMBJ13CA-TR diode is RoHS3 compliant, meets REACH environmental standards, and is supplied with MSL1 (moisture sensitivity level 1, unlimited), ensuring resilience against moisture and enabling broad compatibility with lead-free reflow processes. Compliance extends to international safety and quality standards, including UL94 V0 for flammability and J-STD-020 for soldering reliability. The device is tested and qualified against IEC 61000-4-2 for ESD up to 30kV (air and contact discharge) and IEC 61000-4-4 for EFT to 4kV, providing documented protection levels for system-level electromagnetic compatibility compliance.

Physical Dimensions and Packaging Information of SMBJ13CA-TR STMicroelectronics TVS Diode

Physically, the SMBJ13CA-TR is housed in an industry-standard SMB (DO-214AA) surface-mount package. This form factor enables automated pick-and-place assembly and supports high-density board layouts. The device features a matte tin plating finish for enhanced solderability and meets JEDEC outline and IPC7531 footprint recommendations for reliability. Tape-and-reel packaging, with strict adherence to EIA-481 standards, provides consistent orientation, efficient machine loading, and supports high-volume manufacturing. Marking conventions, reel and inner box dimensions, and pocket tolerances are detailed to facilitate seamless warehouse, handling, and traceability processes.

Guidelines for Soldering, Mounting, and Assembly of SMBJ13CA-TR STMicroelectronics TVS Diode

The SMBJ13CA-TR is compatible with JEDEC J-STD-020 reflow profiles, maximizing assembly reliability in surface mount environments. Engineers should optimize copper land size under leads for thermal management, as detailed in datasheet thermal resistance graphs and footprint recommendations. Minimizing air convection currents during reflow mitigates device displacement and improves yield. The device’s environmental and reflow reliability enables deployment in harsh operating conditions such as industrial controls, communication systems, and switch-mode power supplies.

Alternative or Substitute Options for SMBJ13CA-TR STMicroelectronics TVS Diode

When considering alternatives to the SMBJ13CA-TR, engineers should evaluate equivalent TVS diodes within the broader STMicroelectronics SMBJxxA/SMBJxxCA family, matching parameters like standoff voltage, clamping voltage, and peak pulse power. Alternatives may include unidirectional variants (SMBJ13A-TR) or other voltage ratings (e.g., SMBJ12CA-TR or SMBJ15CA-TR) depending on application voltage requirements. It's also pertinent to compare with similar SMB packaged TVS diodes from other reputable manufacturers, ensuring that IEC compliance, package compatibility, and electrical parameters align with design goals.

Conclusion

: Engineering use cases and selection guidance for SMBJ13CA-TR STMicroelectronics TVS diode

The STMicroelectronics SMBJ13CA-TR TVS diode is positioned as a high-reliability, IEC-compliant surge protection device for advanced electronic systems. Its robust electrical ratings, broad compliance credentials, and compact mechanical design make it an informed choice for engineers selecting TVS solutions for surface-mount applications. With detailed datasheet information, simulation curves, and package specifications, the SMBJ13CA-TR supports rigorous system protection requirements in automotive, industrial, telecom, and consumer electronic designs. Careful consideration of mounting practices, environmental standards, and appropriate equivalent models ensures optimal device selection and long-term operational reliability.