Is there a pin-compatible replacement for UDD32C15L01?

While several parts share the SOD-323 package, no true pin-compatible functional replacement was found. Candidates like H15VND3B have much higher capacitance (30pF vs 0.8pF), which will impact high-speed signal integrity.

What risks should I check before replacing UDD32C15L01?

The most critical risk is the junction capacitance. The target's 0.8pF is for high-speed lines. Using a substitute with higher capacitance (e.g., >10pF) will likely cause signal failure. Always verify the substitute's capacitance against your circuit's requirements.

UDD32C15L01 Alternatives, Datasheet & Cross Reference | Yageo

UDD32C15L01 is an ultra-low capacitance TVS diode for high-speed data line protection. Finding a substitute requires careful matching of its 0.8pF capacitance to avoid signal degradation.

AI replacement insight

Electrical riskhigh

Capacitance mismatch will likely cause signal failure in high-speed circuits.

Package risklow

Package is a standard SOD-323, ensuring physical compatibility.

Can it be replaced directly?

No direct drop-in replacements were found. All candidates have significantly higher capacitance, making them unsuitable for high-speed applications.

Best replacement path

Search for bi-directional TVS diodes in a SOD-323 package with 15V VRWM and capacitance under 2pF.

Main risk

Signal integrity degradation due to high capacitance.

Recommended alternatives

Shares package and voltage, but high capacitance makes it a poor fit for the target's high-speed role.

View details

Alternative comparison matrix

Feature / factor	UDD32C15L01	H15VND3B	PSD15C-ES	Compatibility / risk
Package	SOD-323	SOD-323	SOD-323	SOD-323 — Package is physically compatible.; PSD15C-ES: Package is physically compatible.
Voltage	15V	15V	15V	15V — Reverse stand-off voltage matches.; PSD15C-ES: Reverse stand-off voltage matches.
Current	5A	8A	12A	8A / 12A — Higher peak pulse current rating.; PSD15C-ES: Higher peak pulse current provides more robust protection.
Capacitance	0.8pF	30pF	36pF	30pF / 36pF — Significantly higher capacitance, not for high-speed use.; PSD15C-ES: Extremely high capacitance, unsuitable for high-speed data lines.
Polarity	Bi-directional	Bi-directional	Bi-directional	Bi-directional — Polarity confirmed as bi-directional from datasheet.; PSD15C-ES: Polarity matches target.

Application & sourcing insights

Questions & answers

For low-speed power applications, H15VND3B or PSD15C-ES could work, but for the intended high-speed use, their high capacitance makes them poor substitutes. A new search for parts with <2pF capacitance is recommended.