Mosorb™ 1500W Zener – what it protects and where it fits
The 1N6282A is a unidirectional Zener TVS diode from onsemi's Mosorb™ series, designed to clamp transients on general-purpose DC rails. It delivers 1500W peak pulse power (1.5kW) at 10/1000µs, with a reverse standoff of 25.6V and a minimum breakdown voltage of 28.5V. The clamping ceiling is 41.4V at the rated peak pulse current — that number sets the voltage the downstream circuitry must survive. The DO-201AD axial body handles the reflow cycle well; the leads take solder easily and the junction temperature range from -65°C to 175°C covers most industrial and telecom environments.
Obsolete — sourcing through independent channels
onsemi lists the 1N6282A as Obsolete. For a BOM line that still calls out this exact order code, supply comes through the independent market — quoted per RFQ against the required quantity. The axial package and through-hole mounting make visual inspection straightforward, which helps when verifying parts from non-franchised sources.
Parametric fit – breakdown, clamping, and pulse power
The 28.5V minimum breakdown and 41.4V maximum clamping define the protection window. A 24V rail with 10% tolerance sits at 26.4V nominal — the 1N6282A's standoff of 25.6V leaves margin. The 1500W rating is the peak pulse power at 25°C; derate linearly above that per the datasheet curve. No power line protection means it is a straight TVS, not a filtered or crowbar device.