33V breakdown TVS for 30.5V rail protection
The 1N6466US is a unidirectional Zener TVS diode from Microchip Technology, designed to clamp transients on a 30.5V reverse standoff rail. Its minimum breakdown voltage is 33V, and the maximum clamping voltage at peak pulse current is 47.5V.
SQ-MELF package – hermetic surface-mount footprint
The 1N6466US comes in a SQ-MELF B package, a hermetic surface-mount ceramic body with metallized end caps. Unlike the plastic DO-41 or SMA packages of the standard 1N6466, the MELF construction offers better moisture resistance and thermal cycling performance for high-reliability or sealed-enclosure designs. Mounting is surface mount – the B suffix indicates the specific MELF outline. The footprint is longer than a standard SOD-123; confirm pad geometry against the supplier device package drawing before layout.
Active production – sourcing through distribution
Availability is confirmed per RFQ – lead time varies with distributor inventory position and order quantity. The base product number is 1N6466. The US suffix denotes the SQ-MELF package variant – the standard 1N6466 is typically through-hole DO-41. They are not pin-compatible; the US version is for surface-mount assemblies only.