Skip to main content
onsemi ESD9C5.0ST5G — Circuit Protection

ESD9C5.0ST5G onsemi Zener ESD Protection, AEC-Q101, SOD-923

MPNESD9C5.0ST5G
Active

onsemi ESD9C5.0ST5G, Zener ESD protection diode, 5 V (max) reverse standoff, 6 pF capacitance, AEC-Q101 qualified, SOD-923 surface-mount package

$0.3800Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

ESD9C5.0ST5G specifications
ParameterValue
TypeZener
SeriesAutomotive, AEC-Q101
MountingSurface Mount
Voltage - breakdown11V
Voltage - reverse standoff5V (Max)
Power line protectionNo
Capacitance @ frequency6pF @ 1MHz
Operating temperature-55°C~150°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
ApplicationsAutomotive
CaseSOD-923
Unidirectional channels1

Product details

It is qualified to AEC-Q101, making it suitable for automotive electronic modules that require documented reliability screening. With a typical capacitance of 6 pF at 1 MHz, this clamp loads high-speed data lines minimally — a practical choice for protecting CAN, LIN, USB 2.0, or LVDS interfaces in engine control units, infotainment, and sensor modules.

Key ratings that drive the BOM decision

The 11 V minimum breakdown voltage gives a 6 V margin above the working rail, which is typical for protecting 5 V logic from ESD transients without nuisance triggering. Capacitance of 6 pF at 1 MHz is low enough that signal edge rates on a 12 Mbps CAN bus or a 480 Mbps USB 2.0 line will not be degraded beyond the transceiver's timing budget. For higher-speed interfaces (e.g., Gigabit Ethernet), a sub-1 pF clamp would be needed; this part fits medium-speed automotive buses. The SOD-923 package (0.85 x 0.60 mm typical body) is one of the smallest ESD footprints available. It suits dense PCB layouts where every square millimetre counts, such as camera modules, key fobs, or BMS cell-monitoring boards.

Frequently asked questions

Is ESD9C5.0ST5G AEC-Q101 qualified?

Yes, the series is listed as Automotive, AEC-Q101.

What is the capacitance of ESD9C5.0ST5G?

Typical capacitance is 6 pF measured at 1 MHz. This low value preserves signal integrity on medium-speed automotive buses (CAN, LIN, USB 2.0).

Is ESD9C5.0ST5G unidirectional or bidirectional?

It is a unidirectional Zener clamp with one channel (cathode to protected line, anode to ground). The reverse standoff voltage is 5 V (max) with a breakdown at 11 V (min).