AEC-Q101 TVS for 12V rail protection
The 1.5SMBJ12CA: That power rating is the one that matters for fuse coordination and TVS sizing — a 1500W part on a 12V rail means the clamping voltage stays under 20V even at full surge current, keeping downstream silicon within its safe operating area.
Automotive temperature and package fit
Junction temperature range spans -55°C to 150°C, covering under-hood and engine-bay thermal profiles where ambient can hit 105°C and the TVS self-heats during repetitive surge events. The AEC-Q101 qualification includes the full suite of automotive stress tests — temperature cycling, high-temperature reverse bias, and humidity bias — so this part is production-ready for ECU, BMS, and ADAS sensor power inputs. Housed in the standard DO-214AA (SMB) surface-mount package, the 1.5SMBJ12CA shares the same footprint as other SMB TVS diodes. The package is rated for the 1500W pulse without derating at 25°C; above that, follow the manufacturer's power derating curve in the datasheet. Tape-and-reel packaging (TR) suits automated pick-and-place assembly.
Sourcing and compliance
The part carries AEC-Q101 automotive qualification as its primary compliance signal. RoHS and REACH compliance are standard for Bourns' 1.5SMBJ series; the manufacturer provides full material declaration and test reports upon request through the supply chain.