LXES15AAA1-133
Leiditech
Needs validationlow risk
Excellent pin-compatible alternative with lower capacitance and leakage current, making it a potential upgrade.
Best Alternatives to BPESD0402-140
Finding a substitute for the BPESD0402-140 TVS diode involves matching its 0402 package, bi-directional polarity, and ultra-low capacitance. Key alternatives exist, but require careful review of capacitance and leakage current for high-speed signal integrity.
AI replacement insight
Electrical riskhigh
Using a part with higher capacitance (e.g., >0.5pF) will likely cause signal integrity issues.
Package risklow
The 0402 package is highly standardized, making physical replacement straightforward.
Can it be replaced directly?
Direct replacement for BPESD0402-140 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
LXES15AAA1-133 appears to be the best path, offering upgraded performance with lower capacitance and leakage current. AXGD10402KR is also a strong contender pending verification of its leakage current.
Main risk
The primary risk is increased capacitance or leakage current from an alternative, which can degrade high-speed signal integrity.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | BPESD0402-140 | LXES15AAA1-133 | AXGD10402KR | PESD0402-240 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 | 0402 | 0402 | 0402 | 0402 — Form factor matches.; AXGD10402KR: Form factor matches.; PESD0402-240: Form factor matches.; SLESDL0402-24: Form factor matches. |
| Polarity Or Type | Bi-directional | Bidirectional | Bi-directional | Bi-directional | Bidirectional / Bi-directional — Polarity matches.; AXGD10402KR: Polarity matches based on summary, but not structured data.; PESD0402-240: Polarity matches.; SLESDL0402-24: Polarity matches. |
| Voltage | 14.0V | 15.0V | 24.0V | 24.0V | 15.0V / 24.0V — Very close operating voltage, slightly higher.; AXGD10402KR: Higher operating voltage provides more headroom.; PESD0402-240: Higher operating voltage provides more headroom.; SLESDL0402-24: Higher operating voltage provides more headroom. |
| Capacitance | 0.15pF | 0.05pF | 0.04pF | 0.25pF | 0.05pF / 0.04pF / 0.25pF / 1.5pF — Lower capacitance is an upgrade for high-speed signals.; AXGD10402KR: Lower capacitance is an upgrade for high-speed signals.; PESD0402-240: Slightly higher capacitance.; SLESDL0402-24: Significantly higher capacitance, likely unsuitable for high-speed lines. |
| Current | 200nA | <10nA | Not specified | 10µA | <10nA / Not specified / 10µA / 500nA — Significantly lower leakage current is a major upgrade.; AXGD10402KR: Leakage current is a critical missing parameter.; PESD0402-240: Significantly higher leakage current (50x).; SLESDL0402-24: Higher leakage current. |
Application & sourcing insights
Questions & answers
Verified drop-in options for BPESD0402-140 are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.