Automotive-grade Zener TVS for 33.3V rails
The 1.5SMC39AHR7G: It clamps transients at 53.9V maximum, handling 29A peak pulse current — sized for 24V automotive power buses and industrial 36V DC rails where a single surge event can exceed the load's absolute maximum rating. AEC-Q101 qualification means this part passed the full automotive stress battery: high-temperature reverse bias (HTRB), temperature cycling, and ESD robustness per the JEDEC standard.
Package and board-fit for automated assembly
Surface-mount mounting eliminates through-hole lead forming and wave-solder steps, reducing board assembly cost. The package is rated for 260°C peak reflow per JEDEC J-STD-020, typical for lead-free processes.
The base product number 1.5SMC39 covers the full voltage variant family; the 'A' suffix indicates 5% tolerance on breakdown voltage, and the 'HR7G' suffix encodes the AEC-Q101 automotive grade and tape/reel packaging.