Device identity and key parametrics
The ESD9D5.0ST5G is a Zener-type ESD protection diode from onsemi, designed to clamp transient overvoltages on signal lines. Its 5V (max) reverse standoff voltage suits 3.3V and 5V logic rails, while the ultra-low 0.6pF capacitance at 1 MHz preserves signal integrity on high-speed interfaces like USB 2.0 or HDMI. With two bidirectional channels in a single SOD-923 package, it protects differential pairs or two independent lines without extra board area. The 1A peak pulse current rating (8/20µs waveform) handles typical ESD events per IEC 61000-4-2.
Sourcing reality for an obsolete part
Buyers should treat this as a last-time-buy or end-of-life component — remaining stock is finite and not replenished. For BOM continuity, confirm the exact voltage and capacitance requirements and evaluate alternative Zener ESD diodes in SOD-923 or smaller packages.
Housed in a SOD-923 surface-mount package, the ESD9D5.0ST5G supports automated assembly and reflow soldering.
