SMBJ12A TVS Diode 600W SMB DO-214AA
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Prices updated: 12 Oct 2026
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About this product
SMBJ12A is a 600W unidirectional TVS diode in the SMB (DO-214AA) surface-mount package. It clamps fast transient voltages such as ESD and switching surges on I/O lines, power rails and other sensitive circuits. Its 12V standoff voltage keeps it inactive at normal operating voltages up to about 12V.
Specifications
- Series
- SMBJ12A
- Peak pulse power
- 600 W
- Standoff voltage
- 12 V
- Package
- SMB (DO-214AA)
- Direction
- Unidirectional
Frequently asked questions
How should I connect this TVS diode?
Connect it in parallel with the protected line, with the cathode (marked band) toward the positive line and the anode toward ground.
Is 12V standoff suitable for a 12V rail?
A 12V standoff device is close to a 12V rail and may conduct under normal ripple. For a 12V rail, check the rail's maximum voltage and choose a standoff voltage above it.