PDF datasheet of 206 KB for the 1.5KE6V8A, an axial-lead 1500 W transient voltage suppressor rated around 6.8 V breakdown, with the A suffix denoting the 5 percent tolerance version. These diodes protect supply inputs against surges and often end up shorted, pulling a rail down to near zero ohms. The document gives reverse standoff voltage, clamping figures, peak pulse current and the cathode band marking, which helps when diagnosing a short and choosing a correct substitute, including the CA bidirectional variant.
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