Is there a pin-compatible replacement for 1SMA5928A?

Several candidates share the same DO-214AC (SMA) package, making them pin-compatible. However, their Zener voltage differs, so they are not drop-in replacements.

What risks should I check before replacing 1SMA5928A?

The primary risk is the Zener voltage. Ensure your circuit's regulation or clamping level can tolerate a different voltage (e.g., 15V instead of 13V). Also verify power and temperature ratings.

1SMA5928A Alternatives, Datasheet & Cross Reference | Luguang Electronic Technology Co., Ltd.

1SMA5928A is a 13V, 1.5W Zener diode in a DO-214AC (SMA) package. This page reviews potential alternatives, highlighting key parametric differences for engineers to consider.

AI replacement insight

Electrical riskhigh

Zener voltage mismatch requires circuit redesign or validation.

Package risklow

Candidates share the same DO-214AC (SMA) package.

Can it be replaced directly?

No, a direct, one-to-one replacement for 1SMA5928A with identical key parameters was not identified in this review.

Best replacement path

No direct replacement found. The closest options have a 15V Zener voltage. Review circuit requirements for voltage tolerance.

Main risk

Zener voltage mismatch is the main risk. Using a 15V diode instead of a 13V one will change the circuit's operating point.

Recommended alternatives

Functional alternative in the same package with higher power (3W) but different Zener voltage (15V).

View details

Alternative comparison matrix

Feature / factor	1SMA5928A	BZG03C15	1SMA5929A	Compatibility / risk
Package	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AC (SMA) — Same form factor.; 1SMA5929A: Same form factor.
Voltage	13.0V	15.0V	15.0V	15.0V — Higher Zener voltage requires circuit validation.; 1SMA5929A: Higher Zener voltage requires circuit validation.
Power	1.5W	3.0W	1.5W	3.0W / 1.5W — Higher power rating is a safe upgrade.; 1SMA5929A: Power rating matches target.
Current	1.0µA	1.0µA	-	1.0µA — Reverse leakage current matches, test conditions may vary.

Application & sourcing insights

Questions & answers

No direct drop-in replacement was found. Alternatives like BZG03C15 offer a higher power rating but have a 15V Zener voltage, which requires circuit validation.