SMBJ12CA TVS Diode 600W Bidirectional SMB DO-214AA
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Prices updated: 12 Oct 2026
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About this product
SMBJ12CA is a 600 W bidirectional TVS diode in the SMB (DO-214AA) surface-mount package. It suppresses fast transients on both polarities of AC lines, signal lines and I/O interfaces. Its 12 V stand-off voltage suits circuits operating up to about 12 V.
Specifications
- Series
- SMBJ
- Peak pulse power
- 600 W
- Stand-off voltage
- 12 V
- Polarity
- Bidirectional
- Package
- SMB (DO-214AA)
- Mounting
- Surface mount
Frequently asked questions
Can it protect a 12V circuit?
Yes, the 12 V stand-off voltage matches a nominal 12 V system, but it must sit at or above the normal working voltage so it stays off in normal operation. For a strictly positive-only 12 V rail, a unidirectional type is also common.
How is it wired?
Connect it in parallel between the protected line and ground. It has no polarity, so either terminal can connect to the line.