Is there a pin-compatible replacement for TPESD9B5.0ST5G?

Yes, candidates like PDFB050150-SOD923 and WE05D9-B use the same 2-pin SOD-923 package and are expected to be pin-compatible. However, always verify the datasheet landing pattern.

What risks should I check before replacing TPESD9B5.0ST5G?

Key risks include polarity mismatch (use bi-directional), higher clamping voltage (reduces protection), lower peak power rating, and significant capacitance differences that could affect high-speed signals.

TPESD9B5.0ST5G Alternatives, Datasheet & Cross Reference | TECH PUBLIC

TPESD9B5.0ST5G is a 5V bi-directional TVS diode from TECH PUBLIC in a compact SOD-923 package, designed for ESD protection. Key alternatives offer similar or improved power ratings in the same package.

AI replacement insight

Electrical riskmedium

Must match bi-directional polarity and ensure clamping voltage is not higher than the target's 10V.

Package risklow

SOD-923 is a standard 2-pin package, making physical replacement straightforward.

Can it be replaced directly?

Yes, several form-fit-function alternatives exist. PDFB050150-SOD923 is a strong candidate from the same manufacturer, and WE05D9-B is a comparable cross-vendor option.

Best replacement path

The best path is to use PDFB050150-SOD923 from the same manufacturer, which offers a higher power rating (80W vs 60W) with otherwise identical key parameters.

Main risk

The main risk when substituting is mismatching the diode polarity (uni-directional vs. bi-directional) or selecting a part with a higher clamping voltage, which reduces protection.

Recommended alternatives

A higher power (80W) bi-directional TVS from the same manufacturer in the same SOD-923 package.

View details

Alternative comparison matrix

Feature / factor	TPESD9B5.0ST5G	PDFB050150-SOD923	WE05D9-B	Compatibility / risk
Manufacturer	TECH PUBLIC	TECH PUBLIC	-	TECH PUBLIC — Same manufacturer as target.
Package	SOD-923	SOD-923	SOD-923	SOD-923 — Package matches.; WE05D9-B: Package matches.
Polarity Or Type	Bi-directional	Bi-directional	Bi-directional	Bi-directional — Polarity matches.; WE05D9-B: Polarity matches based on part number suffix and discovery evidence.
Power	60W	80W	80W	80W — Candidate has a higher peak pulse power rating.; WE05D9-B: Candidate has a higher peak pulse power rating.
Capacitance	15 pF	15 pF	8 pF	15 pF / 8 pF — Capacitance matches.; WE05D9-B: Candidate has lower capacitance, which is generally favorable.
Voltage	5.0V	-	5.0V	5.0V — Working voltage matches.

Application & sourcing insights

Questions & answers

PDFB050150-SOD923 by TECH PUBLIC is an excellent alternative, offering a higher power rating in the same package from the same manufacturer. WE05D9-B from WAYON is another strong choice.