1500W automotive-grade transient suppressor for 171V rails
The 1.5SMC200AHE3/57T: With a breakdown voltage of 190V minimum and a clamping voltage of 274V maximum at 5.5A peak pulse current, this part holds the protected bus within the safe operating area of common 250V-rated MOSFETs and DC-DC converters used in 24V truck and heavy-equipment electronics.
DO-214AB SMC package — board-fit and thermal considerations
Housed in the DO-214AB (SMC) package, the part shares the same JEDEC footprint as the SMCJ suffix devices — the solder pad layout is standard, and the copper tab area under the cathode determines the junction-to-ambient thermal resistance. For the 1500W pulse, the copper plane on the PCB should match the recommended land pattern in Vishay's application note to keep the transient thermal impedance below the die's rated limit. The operating junction temperature range spans -65°C to 150°C, covering the full under-hood automotive profile including cold-crank at -40°C and hot-soak near the exhaust manifold. The tape-and-reel packaging (7-inch reel, 850 pieces per reel typical) suits high-volume pick-and-place assembly.