1.5kW bidirectional transient suppressor for general-purpose rail clamping
The 1.5KE75CA B0G: The bidirectional configuration (single channel) means it protects both polarities with one device — useful for AC signal lines or DC rails where the transient can swing positive or negative relative to ground.
Clamping voltage and standoff margin — what they mean for your rail
For a 48V nominal bus (typical telecom or industrial DC rail), this provides about 16V of headroom before the TVS starts to leak significantly. The breakdown voltage range starts at 71.3V minimum — this is where the device begins to avalanche. A downstream DC-DC converter with a 100V abs-max input rating would be marginal here; a 120V-rated part gives comfortable margin. The 1500W rating is specified at 25°C; derate linearly above that per the datasheet curve, typically losing about 0.1%/°C above 25°C.
DO-201 axial package — board-fit and thermal considerations
Housed in a DO-201AA (DO-27) axial leaded package, the 1.5KE75CA B0G is a through-hole part intended for point-to-point wiring or PCB mounting with 0.040-inch diameter leads. The axial form factor conducts heat out through the leads — adequate copper pad area or lead length on each side is needed to keep junction temperature within limits during repetitive surge events. Supplied in bulk packaging, not tape-and-reel — factor this into pick-and-place planning if you are using it in high-volume production; a tube or tray feeder is not available.