Is there a pin-compatible replacement for SESD0402X1BN-0010-098?

Several candidates share the 0402 package and 2-pin layout, making them physically compatible. However, none perfectly match key electricals like voltage and capacitance, so they are not true pin-to-pin replacements without review.

What risks should I check before replacing SESD0402X1BN-0010-098?

The primary risk is electrical. Verify your circuit can tolerate a higher clamping voltage, as most alternatives have a higher breakdown voltage than the original's 9.8V. Also check if a slight increase in capacitance or leakage is acceptable.

SESD0402X1BN-0010-098 Alternatives, Datasheet & Cross Reference | Leiditech

Finding a replacement for the Leiditech SESD0402X1BN-0010-098 requires careful matching of its ultra-low 0.1pF capacitance and 9.8V breakdown voltage. This TVS diode is designed for high-speed interface protection.

AI replacement insight

Electrical riskhigh

Alternatives have higher breakdown/clamping voltages.

Package risklow

0402 is a standard package, ensuring physical compatibility.

Can it be replaced directly?

No direct drop-in replacement was found. Available candidates have higher operating voltages, which increases electrical risk and requires engineering review.

Best replacement path

Search for 0402 bi-directional TVS diodes with capacitance ≤ 0.15pF and a working voltage as close to 9.8V as possible. Prioritize silicon-based diodes.

Main risk

Electrical risk due to higher clamping voltages in alternatives, which may not adequately protect the downstream circuitry.

Recommended alternatives

Similar package and capacitance, but higher 14V operating voltage requires engineering review.

View details

Alternative comparison matrix

Feature / factor	SESD0402X1BN-0010-098	BPESD0402-140	AXGD10402KR	Compatibility / risk
Package	0402 (XDFN)	0402	0402	0402 — Package size matches.; AXGD10402KR: Package size matches.
Polarity Or Type	Bi-directional	Bi-directional	-	Bi-directional — Polarity matches.
Voltage V	9.8V	14.0V	24.0V	14.0V / 24.0V — Higher voltage offers less protection.; AXGD10402KR: Much higher voltage offers less protection.
Capacitance	0.10pF	0.15pF	0.04pF	0.15pF / 0.04pF — Slightly higher capacitance, likely acceptable.; AXGD10402KR: Lower capacitance is better for signal integrity.
Current A	50nA	200nA	-	200nA — Leakage current is 4x higher.
Technology	Silicon Diode	-	Polymer Suppressor	Polymer Suppressor — Different technology affects clamping behavior.

Application & sourcing insights

Questions & answers

No perfect alternative is available. BPESD0402-140 is parametrically closest in capacitance (0.15pF vs 0.1pF) but has a higher 14V operating voltage. This requires careful review of your circuit's voltage tolerance.