What risks should I check before replacing SK38A-LTP?

Before replacing SK38A-LTP, verify that the package of the chosen alternative is identical (DO-214AC). Also, check for minor differences in electrical parameters like forward voltage (Vf) and reverse leakage current (Ir) to ensure they are within your circuit's tolerance.

SK38A-LTP Alternatives, Datasheet & Cross Reference | Micro Commercial Components Corp.

SK38A-LTP is a 3A, 80V Schottky diode in a DO-214AC (SMA) package, now marked as 'Not For New Designs'. Excellent pin-compatible alternatives with higher voltage and current ratings are readily available.

AI replacement insight

Electrical risklow

Top candidates have matching or superior voltage and current ratings.

Package risklow

Several candidates match the DO-214AC (SMA) package for a drop-in fit.

Sourcing risklow

The target is NRND, but recommended alternatives are actively manufactured.

Can it be replaced directly?

Direct replacement for SK38A-LTP should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

SK310A-LTP from the same manufacturer is the most direct upgrade path, offering a higher 100V rating.

Main risk

The main risk is ensuring minor parametric differences, such as slightly higher reverse leakage in some alternatives, are acceptable for the specific application.

Recommended alternatives

A pin-compatible upgrade from the same manufacturer with a higher voltage rating (100V).

View details

Alternative comparison matrix

Feature / factor	SK38A-LTP	SK310A-LTP	SS510 SMA	DSS310	Compatibility / risk
Package	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AC (SMA)	SOD-123FL	DO-214AC (SMA) / SOD-123FL — Same package and pin count.; SS510 SMA: Same package and pin count.; DSS310: Different package requires PCB redesign.
Polarity Or Type	Schottky	Schottky	Schottky	Schottky	Schottky — Same diode technology.; SS510 SMA: Same diode technology.; DSS310: Same diode technology.
Voltage	80V	100V	100V	100V	100V — Higher voltage rating provides more design margin.; SS510 SMA: Higher voltage rating.; DSS310: Higher voltage rating.
Current	3A	3A	5A	3A	3A / 5A — Same current rating.; SS510 SMA: Higher current rating provides more thermal margin.; DSS310: Same current rating.
Reverse Leakage	0.5mA @ 80V	20mA @ 100V	-	-	20mA @ 100V — Higher reverse leakage, review for sensitive applications.
Forward Voltage	0.85V @ 3A	-	0.85V @ 5A	-	0.85V @ 5A — Vf will be lower than target's at 3A, improving efficiency.

Application & sourcing insights

Questions & answers

Verified drop-in options for SK38A-LTP 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.