
Leiditech
A strong 0402 alternative with matching voltage and lower capacitance, but higher leakage current.
The Littelfuse PGB2010402KRHF is a 12V bi-directional ESD suppressor in a 0402 package, notable for its ultra-low 0.07pF capacitance. Finding a replacement requires matching these key electrical parameters and package size.
Most alternatives have significantly higher leakage current (10nA vs <1nA).
Multiple candidates are available in the same 0402 package.
No verified drop-in replacement exists without engineering review. Candidates like TPESD0402G12V are strong functional fits but have higher leakage current.
Prioritize candidates with a 12V rating and capacitance under 0.1pF, such as TPESD0402G12V or PESD0402AV12, while verifying leakage current impact.
The primary risk is increased leakage current from substitute parts, which could impact power consumption or signal integrity in sensitive circuits.

Leiditech
A strong 0402 alternative with matching voltage and lower capacitance, but higher leakage current.
| Feature / factor | PGB2010402KRHF | PESD0402AV12 | TPESD0402G12V | PESD0402V12 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 | 0402 | 0402 | 0402 | 0402 — Same package and pin count.; TPESD0402G12V: Same package and pin count.; PESD0402V12: Same package and pin count.; TPESD0402G15V: Same package and pin count. |
| Voltage | 12V | 12V | 12V | 12V | 12V / 15V — Matches target's operating voltage.; TPESD0402G12V: Matches target's operating voltage.; PESD0402V12: Matches target's operating voltage.; TPESD0402G15V: Higher voltage rating may alter protection characteristics. |
| Capacitance | 0.07pF | 0.05pF | 0.05pF | - | 0.05pF — Lower capacitance is beneficial for high-speed signals.; TPESD0402G12V: Lower capacitance is beneficial for high-speed signals.; TPESD0402G15V: Lower capacitance is beneficial for high-speed signals. |
| Current | <1nA | 10nA | 10nA | <10nA | 10nA / <10nA — Higher leakage current requires verification.; TPESD0402G12V: Higher leakage current requires verification.; PESD0402V12: Higher leakage current requires verification.; TPESD0402G15V: Significantly higher leakage current. |
| Polarity | Bi-directional | - | - | Bi-directional | Bi-directional — Polarity not specified in data, must be verified from datasheet. |
Parts like TECH PUBLIC's TPESD0402G12V or Leiditech's PESD0402AV12 offer a similar 12V rating, 0402 package, and ultra-low capacitance (0.05pF), but have slightly higher leakage current that should be verified for the application.