General-Purpose TVS Diode

SMBJ30CAActive

SMBJ30CA is a bidirectional TVS diode in SMB package. Its main function is to quickly conduct and clamp the overvoltage within a safe range when the circuit is impacted by transient overvoltage (such as ESD, lightning strike, inductive load switching, etc.), thereby effectively protecting downstream sensitive electronic components from damage. Its bidirectional symmetrical structure is suitable for AC or bipolar signal environments, and its 30V operating voltage range makes it widely used in 24V power supply systems, communication interfaces, power control lines and other occasions that require anti-interference protection. When encountering a surge, the device can respond within nanoseconds and provide stable and reliable overvoltage protection. It is a common protection component in industrial, communication and automotive electronic systems.

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Electrical Parameters

Part Number SMBJ30CA

Package SMB

Polar Bi

Vrwm [Max] (V) 30

Vbr [Min] (V) 33.3

Vbr [Max] (V) 36.8

@ IT (mA)1

Vc@Ipp [Max] (V) 48.4

Ipp [Max] (A) 12.4

Ppp [Min] (W) 600

IR [Max] (uA)1

Tj (°C) -55~+150

Status Active

Product Features

Designed for transient voltage suppression, helping protect electronic circuits from ESD, EFT, and surge-induced overvoltage events High peak pulse power handling capability, suitable for absorbing transient energy under standardized surge conditions Fast clamping response, reducing peak voltage stress and improving overall system reliability Stable electrical performance, ensuring consistent protection behavior across repeated transient events SMB (DO-214AA) surface-mount package, enabling compact PCB designs and compatibility with automated assembly Wide operating temperature range with RoHS-compliant construction, supporting use in demanding and regulated application environments