Is there a pin-compatible replacement for SMFJ5.0CA?

Yes, SMF5.0CA from other manufacturers is considered a pin-compatible replacement. It has the same SOD-123FL package, pinout, and critical electrical ratings, but reviewing the specific datasheet is recommended.

What risks should I check before replacing SMFJ5.0CA?

When replacing SMFJ5.0CA, check the polarity (must be bidirectional, 'CA' suffix), reverse standoff voltage (5.0V), and peak power/current ratings (200W/21.7A). Using a unidirectional ('A' suffix) or different voltage part is a primary risk.

SMFJ5.0CA Alternatives, Datasheet & Cross Reference | FUXINSEMI

SMFJ5.0CA is a 200W, 5V bidirectional TVS diode in a SOD-123FL package for surge protection. Pin-compatible alternatives are widely available from multiple vendors under the part number SMF5.0CA.

AI replacement insight

Electrical risklow

Low if using SMF5.0CA. High if polarity or voltage is mismatched.

Package risklow

SOD-123FL is a standard package with compatible variants.

Sourcing risklow

The base part SMF5.0CA is a multi-source, high-volume component.

Can it be replaced directly?

Yes, SMF5.0CA is a widely available, direct cross-reference for SMFJ5.0CA from multiple manufacturers.

Best replacement path

Cross to SMF5.0CA from a major manufacturer like Littelfuse, Eaton, or Yangjie Technology.

Main risk

The main risk is accidentally selecting a unidirectional version (e.g., SMF5.0A) instead of the required bidirectional part.

Recommended alternatives

A strong, pin-compatible alternative from multiple vendors with identical key electrical ratings and package.

View details

Alternative comparison matrix

Feature / factor	SMFJ5.0CA	SMF5.0CA	SMF6.0CA	Compatibility / risk
Package	SOD-123FL	SOD-123 / SOD-123FL	SOD-123FL	SOD-123 / SOD-123FL — Package variants are form-fit compatible.; SMF6.0CA: Package matches target.
Polarity Or Type	Bi-directional TVS	Bidirectional	Bidirectional	Bidirectional — Polarity matches target requirement.; SMF6.0CA: Polarity matches target requirement.
Voltage V	5.0V	5.0V	6.0V	5.0V / 6.0V — Reverse standoff voltage matches.; SMF6.0CA: Higher standoff voltage provides less protection for 5V rails.
Current A	21.7A	21.7A	19.4A	21.7A / 19.4A — Peak pulse current matches.; SMF6.0CA: Lower peak current rating.
Power W	200W	200W	-	200W — Peak pulse power matches.

Application & sourcing insights

Questions & answers

The best alternative for SMFJ5.0CA is typically another SMF5.0CA from a different manufacturer like Littelfuse or Yangjie Technology, as they share identical key electrical parameters and package.