PESD0402MS09-MS
MSKSEMI
Needs validationlow risk
Excellent alternative from the same manufacturer with a higher 9V working voltage and identical ultra-low capacitance.
Best Alternatives to PESD0402MS05-MS
Reviewing alternatives for the MSKSEMI PESD0402MS05-MS, an ultra-low capacitance (0.05pF) 5V bi-directional TVS diode in a 0402 package. Key criteria for substitutes are matching capacitance for signal integrity and a working voltage of 5V or higher.
AI replacement insight
Electrical risklow
Low if capacitance and leakage are matched. Clamping voltage should be verified.
Package risklow
0402 is a standard package, ensuring form/fit compatibility.
Sourcing risklow
Multiple vendors offer parts with similar specifications.
Can it be replaced directly?
Yes, PESD0402MS09-MS is a strong candidate for direct replacement, offering improved voltage rating while matching critical capacitance and leakage specs.
Best replacement path
Use PESD0402MS09-MS for a direct upgrade in voltage from the same manufacturer, or consider PESD0402AV12 for a cross-vendor option.
Main risk
The primary risk is selecting a part with higher capacitance, which would compromise the signal integrity of the high-speed interface this part is designed to protect.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | PESD0402MS05-MS | PESD0402MS09-MS | PESD0402-140 | PESD0402AV12 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 | 0402 | 0402 | 0402 | 0402 — Matches standard 0402 footprint.; PESD0402-140: Matches standard 0402 footprint.; PESD0402AV12: Matches standard 0402 footprint. |
| Voltage | 5V | 9V | 14V | 12V | 9V / 14V / 12V — Higher working voltage provides more headroom.; PESD0402-140: Higher working voltage provides more headroom.; PESD0402AV12: Higher working voltage provides more headroom. |
| Capacitance | 0.05pF | 0.05pF | 0.05pF | 0.05pF | 0.05pF — Matches ultra-low capacitance for high-speed lines.; PESD0402-140: Matches ultra-low capacitance for high-speed lines.; PESD0402AV12: Matches ultra-low capacitance for high-speed lines. |
| Current | < 10nA | < 10nA | < 10nA | < 10nA | < 10nA — Leakage current matches target specification.; PESD0402-140: Leakage current matches target specification.; PESD0402AV12: Leakage current matches target specification. |
Application & sourcing insights
Questions & answers
PESD0402MS09-MS from the same manufacturer, MSKSEMI, is an excellent alternative. It offers identical ultra-low capacitance (0.05pF) and leakage current with a higher 9V working voltage for increased headroom.