Vishay Uni-Directional TVS Diode 600 W, 30 V, DO-214, Surface Mount, 2-Pin, SMBJ30A-E3/52

The Vishay SMBJ30A-E3/52 is a highly reliable uni-directional transient voltage suppressor (TVS) diode, expertly engineered for applications demanding robust circuit protection against voltage surges and transients. This device utilizes the proven TRANSZORB TVS technology, capable of handling peak pulse power dissipation up to 600 W with a fast-acting response, making it an optimal solution for safeguarding sensitive electronic components.

Built with a single-element configuration, this TVS diode is designed for efficient suppression of damaging voltage spikes caused by ESD, lightning, or inductive load switching in a variety of electronic circuit environments. Its uni-directional operation ensures proper polarity protection, while the surface mount DO-214 (SMBJ) package enables easy integration into space-constrained PCBs and automated assembly processes. The diode features two terminals and is supplied as a compact chip, suitable for production in high volumes.

The SMBJ30A-E3/52 offers a maximum reverse stand-off voltage (Vwm) of 30 V and a minimum breakdown voltage (Vbr) of 33.3 V, providing a precise threshold for circuit protection. Its clamping voltage of 48.4 V and maximum peak pulse current of 12.4 A enable it to effectively clamp and dissipate surge energy, thereby minimizing the risk of damage to downstream electronics. The product is characterized by a low maximum reverse leakage current of 1μA, supporting system efficiency and stability.

Engineered to perform under extreme environmental conditions, this TVS diode operates across a wide temperature range from -55°C to +150°C, making it suitable for both industrial and automotive circuits. It complies with AEC-Q101 automotive standard requirements, highlighting its suitability for vehicle and other heavy-duty electronics which require validated surge protection solutions.

Physically, the product measures 4.57 mm in length, 3.94 mm in width, and 2.24 mm in height, making it ideal for densely populated PCB layouts. Its robust construction also supports integration in systems susceptible to voltage transients, such as power management modules, industrial controllers, telecommunication devices, and protection interfaces in signal/data lines.

Vishay’s TVS solution here is characterized by excellent clamping capability, a very fast response time, and low resistance to incremental surge, ensuring both effective protection and minimal signal loss in the application circuit. The SMBJ package supports automated production environments, reducing manual handling and improving assembly efficiency. No explicit standards approvals are listed, but AEC-Q101 automotive qualification is referenced for enhanced design confidence.

This TVS diode is a class-leading solution for engineers and designers looking for precision transient protection in automotive, industrial, laboratory, or general electronic device protection schemes. It is especially recommended for devices and systems where surge events are probable, and where adherence to automotive-grade validation is required. Explore the Vishay category for related TVS Diodes serving diverse voltage protection ranges and application needs.