The ESD5Z6.0T1 is a single-channel Zener-type ESD protection diode from onsemi, housed in a SOD-523 surface-mount package. It is designed to clamp transients on a 6V (Max) reverse standoff rail, with a minimum breakdown voltage of 6.8V and a clamping voltage of 20.5V at the peak pulse current of 8.8A (8/20µs waveform). The 70pF capacitance at 1MHz keeps signal degradation low on general-purpose I/O lines.
onsemi lists the ESD5Z6.0T1 as Obsolete. For BOM lines that still call out this exact order code, the only sourcing path is through independent distribution with verified date-code and traceability. We source per RFQ — confirm your quantity and we will locate available lots from our supply network.
The 6V (Max) reverse standoff voltage means this diode will not conduct at normal 5V or 3.3V rail levels, but a 6V rail sits right at the edge — the 6.8V minimum breakdown provides a 0.8V guard band.