Is there a pin-compatible replacement for TPGC03C?

Yes, SPD9103W appears to be a pin-compatible replacement in the same SOD-323 package. However, always verify the full datasheet, especially capacitance, before final selection.

What risks should I check before replacing TPGC03C?

Key risks include incorrect working voltage, which won't protect the circuit, higher capacitance, which can affect high-speed signals, and lower power handling, which can lead to failure under surge conditions.

TPGC03C Alternatives, Datasheet & Cross Reference | TECH PUBLIC

TPGC03C is a 3.3V low-capacitance TVS diode in a SOD-323 package for high-speed line protection. Key parameters for replacement are the 3.3V working voltage, low capacitance (1pF), and 260W power rating.

AI replacement insight

Electrical riskmedium

Must match 3.3V working voltage, low capacitance (~1pF), and have sufficient power rating (>=260W).

Package risklow

SOD-323 is a standard package, ensuring mechanical compatibility.

Can it be replaced directly?

SPD9103W is a potential direct replacement, matching the 3.3V working voltage, SOD-323 package, and low capacitance, while offering a higher power rating.

Best replacement path

Upgrade to a part with a higher power rating like SPD9103W, which matches other key parameters.

Main risk

The main risk is selecting a part with the wrong working voltage (e.g., 5V instead of 3.3V) or higher capacitance that degrades signal integrity.

Recommended alternatives

A 3.3V TVS in the same SOD-323 package with a higher power rating (350W vs 260W), making it a potential upgrade.

View details

Alternative comparison matrix

Feature / factor	TPGC03C	SPD9103W	WS03DLC-B-ES	Compatibility / risk
Package	SOD-323	SOD-323	SOD-323	SOD-323 — Same package and pin count.; WS03DLC-B-ES: Same package and pin count.
Voltage	3.3V	3.3V	3.3V	3.3V — Working voltage matches.; WS03DLC-B-ES: Working voltage matches.
Power	260W	350W	200W	350W / 200W — Higher power rating provides more protection.; WS03DLC-B-ES: Lower power rating may not provide sufficient protection.
Capacitance	1pF	1pF (per datasheet)	-	1pF (per datasheet) — Low capacitance matches target, good for high-speed lines.

Application & sourcing insights

Questions & answers

SPD9103W is a strong candidate, offering the same 3.3V rating and SOD-323 package but with a higher power rating (350W), making it a potential upgrade.