Automotive-grade transient suppressor for 5.8V rails
The 1.5KE6.8AHE3_A/C: It protects a 5.8V nominal rail by clamping transients to 10.5V at 143A peak pulse current (10/1000µs waveform).
Clamping voltage and peak current — what they mean for your circuit
The 10.5V maximum clamp voltage is the ceiling the downstream electronics see during a surge — any device on that rail must survive at least 10.5V for the pulse duration. The 143A peak pulse current rating tells you the diode can sink that much current without failing open or short, assuming the PCB trace and upstream fuse can deliver it. Breakdown occurs at a minimum of 6.45V, so the diode starts conducting just above the 5.8V standoff — normal 5V logic rails with a little margin ride through without leakage.
Through-hole axial package — hand-solderable and board-friendly
Housed in a DO-201AA / DO-27 axial leaded package, this part is through-hole mount — easy to hand-solder, inspect, and replace. The 1.5KE footprint is a standard across the industry, so PCB layout is straightforward and the part mates with common sockets or solder pads.
Temperature range and automotive qualification
Operating from -55°C to 175°C, the diode handles under-hood engine bay temperatures and high-ambient industrial enclosures.