Is there a pin-compatible replacement for SK24A?

Several candidates, including SS58 and SX34, use the same SMA (DO-214AC) package and are likely pin-compatible for this 2-pin device. However, you must always verify the land pattern and dimensions from the datasheet before board layout or assembly.

What risks should I check before replacing SK24A?

Before replacing SK24A, check three key parameters: 1) Forward Voltage (Vf), as a higher value increases power loss; 2) Reverse Leakage Current (Ir), as a higher value can affect low-power modes; and 3) Peak Surge Current (Ifsm) to ensure it meets your system's fault condition requirements.

SK24A Alternatives, Datasheet & Cross Reference | Suzhou Good-Ark Electronics Co., Ltd.

Finding a substitute for the SK24A 40V 2A Schottky diode involves balancing performance and availability. This guide reviews top alternatives, focusing on critical electrical parameters and package compatibility.

AI replacement insight

Package risklow

All recommended candidates use the same SMA (DO-214AC) package, minimizing layout changes.

Electrical riskmedium

Candidates have varying forward voltage, reverse leakage, and surge ratings. These must be checked against application requirements.

Sourcing risklow

The suggested alternatives are from active production lines from various manufacturers, offering good availability.

Can it be replaced directly?

While no part is guaranteed as a direct drop-in without verification, the SS58 is a strong candidate for an upgrade, and the SX34 is a strong candidate for a functionally similar replacement. Both require datasheet review.

Best replacement path

The SS58 is the most promising upgrade path, offering superior voltage (80V) and current (5A) ratings in the same SMA package with low risk.

Main risk

The primary risk when substituting is an increase in forward voltage (Vf), which raises power dissipation and reduces efficiency. Changes in reverse leakage (Ir) can also affect circuit behavior.

Recommended alternatives

SS58 is a strong upgrade with higher voltage (80V) and current (5A) ratings in the same SMA package.

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Alternative comparison matrix

Feature / factor	SK24A	SS58	SX34	SS56A	Compatibility / risk
Package	SMA (DO-214AC)	SMA (DO-214AC)	SMA (DO-214AC)	SMA (DO-214AC)	SMA (DO-214AC) — Same package family ensures form-fit.; SX34: Same package family ensures form-fit.; SS56A: Same package family ensures form-fit.
Voltage	40.0V	80.0V	40.0V	60.0V	80.0V / 40.0V / 60.0V — Higher voltage rating provides more design margin.; SX34: Identical voltage rating offers no extra margin.; SS56A: Higher voltage rating provides more margin.
Current	2.0A	5.0A	3.0A	5.0A	5.0A / 3.0A — Higher current rating provides more design margin.; SX34: Higher current rating provides more design margin.; SS56A: Higher current rating provides more margin.
Forward Voltage	0.55V @ 2A	-	0.5V @ 3A	0.7V @ 5A	0.5V @ 3A / 0.7V @ 5A — Lower Vf is beneficial for efficiency.; SS56A: Higher Vf will increase power dissipation.

Application & sourcing insights

Questions & answers

The SS58 is the best alternative to the SK24A, offering a significant upgrade in both voltage (40V to 80V) and current (2A to 5A) ratings in the same package, providing greater design margin.