What risks should I check before replacing SD15C-01FTG?

Before replacing, you must verify three key parameters. First, ensure the clamping voltage provides adequate protection. Second, check if the difference in junction capacitance (e.g., 40pF vs 70pF) is acceptable for your circuit's signal speed. Finally, confirm the power rating meets or exceeds your design's requirements.

SD15C-01FTG Alternatives, Datasheet & Cross Reference | Leiditech

Finding a substitute for the SD15C-01FTG TVS diode involves matching its 15V working voltage, 350W power rating, and SOD-323 package. Several alternatives exist, with the best options offering upgraded power handling.

AI replacement insight

Electrical risklow

Key ratings are similar or better on the best candidates, but capacitance and clamping voltage must be verified.

Package risklow

All viable candidates use the same SOD-323 package, making physical replacement straightforward.

Can it be replaced directly?

Yes, several potential alternatives exist for SD15C-01FTG. The strongest candidate is PSD15C-LF-T7, which matches or exceeds key specifications.

Best replacement path

PSD15C-LF-T7 is the most promising alternative, offering a higher power rating in the same package with similar electricals.

Main risk

The primary risk is ensuring that differences in secondary parameters, especially junction capacitance and the precise clamping voltage profile, are acceptable for the specific application.

Recommended alternatives

A strong alternative in the same package with a higher power rating. Review capacitance difference.

View details

Alternative comparison matrix

Feature / factor	SD15C-01FTG	PSD15C-LF-T7	PSD15C-ES	TPGC15C	Compatibility / risk
Package	SOD-323	SOD-323	SOD-323	SOD-323	SOD-323 — Same package and pin count.; PSD15C-ES: Same package.; TPGC15C: Same package.
Polarity Or Type	Bidirectional	Bidirectional	-	-	Bidirectional — Both are bidirectional.
Voltage V	15.0V	15.0V	15.0V	15.0V	15.0V — Working voltage matches.; PSD15C-ES: Working voltage matches.; TPGC15C: Working voltage matches.
Power W	350W	400W	550W	350W	400W / 550W / 350W — Candidate has higher power rating.; PSD15C-ES: Higher power rating is an upgrade.; TPGC15C: Power rating matches.
Capacitance	70 pF	40 pF	36 pF	1 pF	40 pF / 36 pF / 1 pF — Lower capacitance may affect signal integrity differently.; PSD15C-ES: Lower capacitance.; TPGC15C: Significantly lower capacitance.
Clamping Voltage	24V @ 1A	24.0V	30V	32V	24.0V / 30V / 32V — Clamping voltage appears to match, verify conditions.; PSD15C-ES: Higher clamping voltage provides less protection.; TPGC15C: Higher clamping voltage provides less protection.

Application & sourcing insights

Questions & answers

Verified drop-in options for SD15C-01FTG are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.