What are the primary applications for the SMBJ30CA?

It is commonly used for protecting I/O interfaces, AC/DC power supplies, and low-frequency signal transmission lines (e.g., RS232, RS485) from voltage transients.

What are the key electrical specifications?

It features a 30V standoff voltage, a breakdown voltage range of 33.3V to 36.8V, and a maximum clamping voltage of 48.4V at 12.4A.

What should engineers review before using the SMBJ30CA?

Engineers should confirm that the peak pulse power and current ratings are sufficient for the expected transient events in their specific application environment.

What is the sourcing status of the SMBJ30CA?

The component is currently active and widely available, with no significant supply chain risks reported.

What is the pinout of SMBJ30CA?

Use the SMBJ30CA datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about SMBJ30CA pinout to locate pins, power rails, and interface signals before layout.

SMBJ30CA Datasheet, Specs, Alternatives & ECAD | Microdiode Semiconductor (Shenzhen) Co., Ltd.

AI summary

The SMBJ30CA is a 600W bidirectional TVS diode in an SMB package, designed for transient voltage protection in power and signal lines.

Best for

Power supply protection
Signal line transient suppression

Avoid if

High-speed data lines where junction capacitance might interfere with signal integrity

Check before use

Clamping voltage vs. component voltage tolerance

Key specifications

Peak Pulse Power: 600 W
Standoff Voltage: 30 V
Clamping Voltage: 48.4 V
Peak Pulse Current: 12.4 A

Compliance & Environment

RoHS: ROHS3 Compliant
REACH: REACH Unaffected
MSL: 1 (Unlimited)
ECCN: EAR99
HTSUS: 8541.10.0080

Application

Power SupplyIndustrial ControlConnectivity

Datasheet

f11d6ac3d705bb9de02b28ca008b945a_SMBJ SERIES N0193 REV.D.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for SMBJ30CA: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

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Where to Buy

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Alternative components

Part	Details	Match
SMBJ26CAAVX	Parametric alternative with a significantly lower standoff voltage, posing a high risk and requiring careful review.	Needs validation

Design and risk insights

Questions & answers

The SMBJ30CA is a bidirectional transient voltage suppressor (TVS) diode from MDD, rated for 600W peak pulse power.

SMBJ28CABOURNS	Parametric alternative in the same package but with a lower standoff voltage that requires engineering review.	Needs validation
SMCJ36CAMeritek	Functional alternative with higher voltage and power ratings, but in a different, larger package.	Needs validation

AI summary

Best for

Avoid if

Check before use

Key specifications

Compliance & Environment

Application

Datasheet

CAD Models

Where to Buy

Alternative components

Design and risk insights

Questions & answers

What is the SMBJ30CA?+×

What are the primary applications for the SMBJ30CA?+×

What are the key electrical specifications?+×

What should engineers review before using the SMBJ30CA?+×

What is the sourcing status of the SMBJ30CA?+×

What is the pinout of SMBJ30CA?+×