What risks should I check before replacing GBLC15CI?

Verify three key parameters: 1. The replacement must be bidirectional. 2. The working voltage must be 15V. 3. The capacitance must be very low (~1pF) to avoid impacting signal integrity in high-speed applications.

GBLC15CI Alternatives, Datasheet & Cross Reference | Leiditech

GBLC15CI is a 15V, 330W low-capacitance (1pF) bidirectional TVS diode in a SOD-323 package. Key considerations for replacement are matching the low capacitance, bidirectional polarity, and 15V working voltage.

AI replacement insight

Electrical riskhigh

Using a part with incorrect voltage, polarity, or high capacitance will cause circuit malfunction or failure.

Package risklow

Many alternatives exist in the same SOD-323 package.

Can it be replaced directly?

Direct replacement for GBLC15CI should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

TPSD3C151L is the closest match, aligning on all key parameters including the critical 1pF capacitance.

Main risk

The primary risk is substituting with a part that has higher capacitance, which could degrade high-speed signal integrity.

Recommended alternatives

A strong form, fit, and function candidate with matching package, voltage, power, and critical low capacitance.

View details

Alternative comparison matrix

Feature / factor	GBLC15CI	TPSD3C151L	TPGC15C	Compatibility / risk
Package	SOD-323	SOD-323	SOD-323	SOD-323 — Same package ensures form and fit compatibility.; TPGC15C: Same package ensures form and fit compatibility.
Polarity	Bi-directional	Bi-directional	Bi-directional	Bi-directional — Polarity matches target requirement.; TPGC15C: Polarity matches target requirement.
Voltage	15V	15V	15V	15V — Working voltage matches target.; TPGC15C: Working voltage matches target.
Power	330W	330W	350W	330W / 350W — Peak pulse power rating matches target.; TPGC15C: Slightly higher power rating provides more robustness.
Capacitance	~1pF	1.0pF	1.0pF	1.0pF — Low capacitance matches target, suitable for high-speed lines.; TPGC15C: Low capacitance matches target.

Application & sourcing insights

Questions & answers

Verified drop-in options for GBLC15CI 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.