What are the key specifications of the SMAJ30CA?

It features a 400W peak pulse power rating, 30V reverse stand-off voltage, 48.4V maximum clamping voltage, and 8.3A peak pulse current.

What is the SMAJ30CA used for?

It is commonly used in I/O interfaces, AC/DC power supplies, and low-frequency signal transmission lines (like RS232/RS485) to protect against transient surges.

What should engineers review before using the SMAJ30CA?

Engineers should verify the peak pulse power and current requirements of the application, as well as the thermal derating curves provided in the datasheet.

What are the sourcing risks for the SMAJ30CA?

The component is currently active with high availability, posing low sourcing risk for standard production designs.

What is the pinout of SMAJ30CA?

Use the SMAJ30CA datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about SMAJ30CA pinout to locate pins, power rails, and interface signals before layout.

SMAJ30CA Datasheet, Specs, Alternatives & ECAD | Microdiode Semiconductor (Shenzhen) Co., Ltd.

AI summary

The SMAJ30CA is a 400W bidirectional TVS diode in an SMA package, providing robust protection for sensitive circuits against voltage transients.

Best for

I/O protection
Power supply surge suppression
Signal line protection

Avoid if

Applications requiring higher than 400W peak pulse power
High-speed data lines where junction capacitance might interfere with signal integrity

Check before use

Maximum clamping voltage vs. component tolerance
Thermal derating at high ambient temperatures

Key specifications

Peak Pulse Power: 400 W
Stand-off Voltage: 30 V
Clamping Voltage: 48.4 V
Configuration: Bidirectional

Compliance & Environment

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

Application

Power Supply ProtectionI/O InterfaceSignal Lines

Datasheet

c0ab22e7d38842498a9039a959030754_2211161800_Shenzhen-Jinkaisheng-Elec-SMAJ30CA_C5267300.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for SMAJ30CA: 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
SMAJ33CAMDD	Same package and power, but a lower current rating requires careful review of circuit protection needs.	Needs validation

Design and risk insights

Questions & answers

The SMAJ30CA is a bidirectional Transient Voltage Suppressor (TVS) diode designed to protect electronic circuits from voltage spikes and ESD.

SMBJ30CABOURNS	An electrical upgrade with higher power/current ratings, but in a different package requiring a board change.	Needs validation
SMCJ36CAMeritek	A much more robust part in a larger package, suitable for new designs or redesigns with available space.	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 SMAJ30CA?+×

What are the key specifications of the SMAJ30CA?+×

What is the SMAJ30CA used for?+×

What should engineers review before using the SMAJ30CA?+×

What are the sourcing risks for the SMAJ30CA?+×

What is the pinout of SMAJ30CA?+×