Is there a pin-compatible replacement for PESD5V0U1BB,115?

ESD5B5.0ST1G uses the same SOD523 package and is likely pin-compatible, but it is not a direct drop-in replacement. Its significantly higher capacitance (15pF vs. 2.9pF) must be evaluated for your specific high-speed application to avoid performance degradation.

What risks should I check before replacing PESD5V0U1BB,115?

Key risks are electrical and mechanical. Electrically, ensure the substitute's capacitance does not degrade signal integrity on high-speed lines. Mechanically, verify the package footprint matches your PCB layout; many functional alternatives come in different packages.

PESD5V0U1BB,115 Alternatives, Datasheet & Cross Reference | Nexperia USA Inc.

PESD5V0U1BB,115 is a low-capacitance bidirectional ESD protection diode from Nexperia, ideal for safeguarding high-speed data lines in a compact SOD523 package. Finding a substitute requires matching its 5V rating, bidirectional nature, and critically, its low 2.9pF capacitance.

AI replacement insight

Electrical riskhigh

Capacitance mismatch is a critical concern for high-speed applications.

Package riskmedium

The best functional alternative requires a PCB layout change.

Sourcing risklow

Multiple functional and parametric alternatives are available from various manufacturers.

Can it be replaced directly?

No direct, verified drop-in replacement is identified. ESD5B5.0ST1G shares the package but has significantly different capacitance, requiring engineering review.

Best replacement path

For form-factor priority, review ESD5B5.0ST1G, but verify capacitance impact. For performance, redesign for UAD8C05L01.

Main risk

The main risk is increased capacitance impacting high-speed signal integrity.

Recommended alternatives

Excellent functional alternative with lower capacitance, but requires a PCB layout change.

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Alternative comparison matrix

Feature / factor	PESD5V0U1BB,115	UAD8C05L01	ESD5B5.0ST1G	Compatibility / risk
Package	SOD523	SOD882	SOD523	SOD882 / SOD523 — Different package requires PCB redesign.; ESD5B5.0ST1G: Same package simplifies replacement.
Voltage	5.0V	5.0V	5.0V	5.0V — Working voltage matches.; ESD5B5.0ST1G: Working voltage matches.
Capacitance	2.9pF	0.4pF	15pF	0.4pF / 15pF — Lower capacitance is better for high-speed signals.; ESD5B5.0ST1G: Significantly higher capacitance, risk for high-speed lines.
Polarity Or Type	Bi-directional	Bidirectional	Bi-directional	Bidirectional / Bi-directional — Polarity matches.; ESD5B5.0ST1G: Polarity matches.
Esd Protection	10kV	-	±30kV	±30kV — Provides higher ESD protection.

Application & sourcing insights

Questions & answers

The best alternative depends on design priorities. For a similar package, ESD5B5.0ST1G is an option but has higher capacitance, requiring signal integrity checks. For better performance (lower capacitance), UAD8C05L01 is a strong functional alternative but requires a PCB layout change due to its different package.