What risks should I check before replacing SS28?

Key risks include: 1) Diode Type: Ensure the replacement is a Schottky diode. 2) Voltage Rating: The replacement should have a rating of at least 80V, preferably higher. 3) Package: Verify the package is DO-214AC (SMA) for a drop-in fit.

SS28 Alternatives, Datasheet & Cross Reference | onsemi

SS28 is a 2A, 80V Schottky diode in an SMA package. When seeking alternatives, prioritize matching the Schottky characteristics, SMA package, and ensuring voltage/current ratings meet or exceed the original specifications.

AI replacement insight

Electrical riskmedium

Using a part with identical voltage (e.g., SS38) or the wrong diode type can cause failure.

Package riskhigh

Some functional alternatives use a different package (e.g., SMB) and require a board redesign.

Sourcing risklow

Schottky diodes in this range are common and available from multiple vendors.

Can it be replaced directly?

Direct replacement for SS28 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Start with Datasheet verified or Strong match candidates for SS28, then review parametric alternatives for package and electrical fit.

Main risk

The main risks are using a non-Schottky diode, which alters circuit performance, or selecting a part with an insufficient voltage rating.

Recommended alternatives

Upgrade path with higher voltage (150V) and current (3A) in the same SMA package.

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Alternative comparison matrix

Feature / factor	SS28	SS315	SS38	Compatibility / risk
Package	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AC (SMA) — Same package and pinout.; SS38: Same package and pinout.
Polarity Or Type	Schottky	Schottky	Schottky	Schottky — Functionally identical diode type.; SS38: Functionally identical diode type.
Voltage V	80V	150V	80V	150V / 80V — Higher voltage rating provides increased design margin.; SS38: Identical voltage rating lacks recommended safety margin.
Current A	2A	3A	3A	3A — Higher current rating provides increased design margin.; SS38: Higher current rating provides increased design margin.

Application & sourcing insights

Questions & answers

Verified drop-in options for SS28 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.