Is there a pin-compatible replacement for PESD3V3S2UT-N?

PESD3V3S2UT-ES and H3V3HT2B use the same SOT-23 package, making them likely pin-compatible. However, you must verify the pinout from the datasheets before board layout.

What risks should I check before replacing PESD3V3S2UT-N?

Key risks include pinout mismatch, differences in clamping voltage under specific surge conditions, and junction capacitance affecting high-speed signal integrity. Always verify datasheets.

PESD3V3S2UT-N Alternatives, Datasheet & Cross Reference | BORN

Finding a substitute for the PESD3V3S2UT-N TVS diode involves matching the 3.3V working voltage, 350W power rating, and SOT-23 package. Several functional alternatives exist with similar or better electrical characteristics.

AI replacement insight

Package riskmedium

While the SOT-23 package matches, pinout configuration must be verified to avoid incorrect installation.

Electrical risklow

Key parameters like voltage and power match or exceed the target, but dynamic clamping behavior should be checked.

Sourcing risklow

The identified alternatives are from different manufacturers, potentially improving supply chain resilience.

Can it be replaced directly?

No drop-in replacement is confirmed without datasheet verification. However, PESD3V3S2UT-ES and H3V3HT2B are strong functional alternatives in the same package that warrant review.

Best replacement path

PESD3V3S2UT-ES is the strongest candidate due to its similar part number and superior power/current ratings. H3V3HT2B is also a viable option.

Main risk

The primary risk is pinout mismatch. Even in a standard SOT-23 package, the arrangement of anodes and cathodes for dual-line protection can vary.

Recommended alternatives

A strong functional alternative in the same SOT-23 package with matching voltage and higher power/current ratings.

View details

Alternative comparison matrix

Feature / factor	PESD3V3S2UT-N	PESD3V3S2UT-ES	H3V3HT2B	Compatibility / risk
Package	SOT-23	SOT-23	SOT-23	SOT-23 — Same package and pin count.; H3V3HT2B: Same package and pin count.
Voltage	3.3V	3.3V	3.3V	3.3V — Working voltage matches.; H3V3HT2B: Working voltage matches.
Power	350W	450W	350W	450W / 350W — Higher peak power rating provides more margin.; H3V3HT2B: Peak power rating matches.
Current	20A	30A	25A	30A / 25A — Higher peak pulse current rating.; H3V3HT2B: Higher peak pulse current rating.
Clamping Voltage	16V @ 20A	15V @ 30A	-	15V @ 30A — Clamping voltage is comparable.
Capacitance	200pF	-	100pF	100pF — Lower capacitance is often better for signal integrity.

Application & sourcing insights

Questions & answers

PESD3V3S2UT-ES by ElecSuper is a strong candidate, offering a matching 3.3V rating and SOT-23 package with higher power handling. H3V3HT2B is also a good option to consider.