11 V Zener in a Hermetic MELF Package
The 1N6325US/TR is a 11 V Zener diode from Microchip Technology, rated for 500 mW continuous power dissipation in a surface-mount SQ-MELF, B package. The ±5% tolerance on the nominal voltage makes it a standard-grade choice for voltage clamping, reference, or protection circuits where a tight regulation window is not critical. The SQ-MELF (Surface Mount MELF) package is a hermetic, cylindrical ceramic body with metallized end caps — a construction that offers superior moisture resistance and thermal cycling performance compared to plastic SMD packages. This makes it a fit for high-reliability, aerospace, or downhole applications where the board may see wide temperature swings or corrosive atmospheres.
Temperature Range and Power Handling
The 500 mW power rating is the maximum continuous dissipation at 25°C ambient; derating is required above that temperature, with the derating curve typically specified in the datasheet. Maximum impedance (Zzt) is 7 Ohms at the test current, and reverse leakage is specified at 1 µA maximum at 8.5 V — a standard guard-band for a Zener of this voltage class.
Active Lifecycle and Sourcing
Supplied in Tape & Reel (TR) packaging, it is ready for automated pick-and-place assembly.