30 V Zener clamp at 1.3 W — DO-41 axial
The Vishay ZPY30-TR is a 30 V Zener diode rated for 1.3 W maximum power dissipation in the through-hole DO-204AL (DO-41) axial package. The ±5% tolerance on the nominal Zener voltage gives a regulation window of 28.5 V to 31.5 V, which is tight enough for most rail-clamp and voltage-reference duties in automotive and industrial supplies.
AEC-Q101 and 175°C — under-hood ready
This part carries AEC-Q101 automotive qualification and a 175°C maximum operating temperature, placing it in the tier suitable for under-hood electronics, engine-control modules, and high-ambient industrial enclosures where standard 150°C-rated Zeners would derate too aggressively. The reverse leakage is specified at 500 nA maximum at 22.5 V — 75% of the nominal Zener voltage — which means the diode stays off cleanly in standby circuits without draining the battery or supply rail.
Active production, ROHS3 compliant
The axial DO-41 body is a standard footprint that mates with 0.025-inch round leads, and the part is available on Tape & Reel (TR) or Cut Tape (CT) for through-hole insertion machines or manual assembly.