Is there a pin-compatible replacement for SM5817PL-TP?

Several diodes like SL110 and S110 use the same SOD-123FL package and are pin-compatible. However, none are direct drop-in replacements as their forward voltage is higher than the original, which impacts efficiency.

What risks should I check before replacing SM5817PL-TP?

The primary risk is increased power loss and heat due to higher forward voltage (Vf). The target SM5817PL-TP has a very low Vf of 0.45V. Most alternatives have a Vf of 0.6V or higher, which could affect circuit performance and thermal management.

SM5817PL-TP Alternatives, Datasheet & Cross Reference | Micro Commercial Components Corp.

The SM5817PL-TP is a 20V, 1A Schottky diode in a SOD-123FL package, notable for its low forward voltage for high-efficiency applications. Alternatives exist but require careful review of forward voltage (Vf) to avoid increased power dissipation.

AI replacement insight

Electrical riskhigh

Forward voltage mismatch is the primary risk, impacting power efficiency and thermal design.

Package risklow

The SOD-123FL package is common and alternatives are readily available in the same footprint.

Can it be replaced directly?

No direct drop-in replacement with matching low forward voltage has been identified. All potential alternatives are electrically inferior in this key parameter.

Best replacement path

SL110 is the closest parametric match, but its higher forward voltage (0.6V vs 0.45V) requires thermal analysis.

Main risk

Thermal performance degradation due to higher forward voltage in all available alternatives, leading to reduced efficiency and potential overheating.

Recommended alternatives

A pin-compatible Schottky diode with a higher voltage rating but also a higher forward voltage drop.

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Alternative comparison matrix

Feature / factor	SM5817PL-TP	SL110	S16	Compatibility / risk
Package	SOD-123FL	SOD-123FL	SOD-123FL	SOD-123FL — Package matches, ensuring physical compatibility.; S16: Package matches, ensuring physical compatibility.
Voltage	20V	100V	60V	100V / 60V — Higher voltage rating provides more design margin.; S16: Higher voltage rating provides more design margin.
Current	1A	1A	1A	1A — Current rating matches the target.; S16: Current rating matches the target.
Forward Voltage	0.45V @ 1A	0.6V @ 1A	Not specified	0.6V @ 1A / Not specified — Higher Vf will increase power loss and heat.; S16: Vf is a critical parameter for efficiency and must be verified from the datasheet.

Application & sourcing insights

Questions & answers

The SL110 from Yangjie is a potential alternative in the same package with a 100V rating, but has a higher forward voltage (0.6V vs 0.45V). This will increase power loss and must be evaluated for your specific application.