1500W bidirectional TVS for general-purpose rail clamping
The 1.5KE16CA A0G: It clamps transients on a 13.6V nominal rail — the reverse standoff voltage — and breaks down at 15.2V minimum, with the clamping voltage held to 22.5V at the 70A peak pulse current. Bidirectional means it handles positive and negative surges in one package — useful for AC signal lines, bipolar supplies, or any rail where the polarity isn't fixed. The DO-201AA axial-lead package (also known as DO-27) is the standard through-hole footprint for this power class, replacing a failed part without board modification.
Clamping window and surge rating
The 13.6V standoff voltage means the diode draws negligible leakage below that rail level — it sits across the protected line without loading it. When a surge pushes the line above 15.2V, the device starts conducting and clamps at 22.5V worst case, shunting up to 70A of the 10/1000µs surge through the junction. The 1500W peak pulse rating is the product of clamping voltage and peak current at the specified waveform — a standard metric for comparing TVS diodes. On a 13.6V rail, this part absorbs transients that would otherwise punch through downstream silicon.