Is there a pin-compatible replacement for RS2MW?

S2MW and US2MW use the same SOD-123FL package and are pin-compatible. However, they are not direct drop-in replacements due to significant differences in recovery time and forward voltage.

What risks should I check before replacing RS2MW?

Before replacing RS2MW, you must verify two key parameters: 1. Recovery Time (trr): Ensure the replacement is fast enough for your circuit's switching frequency. 2. Forward Voltage (Vf): A higher Vf will increase heat, so check your thermal budget.

RS2MW Alternatives, Datasheet & Cross Reference | Slkor(SLKORMICRO Elec.)

RS2MW is a 2A, 1000V Fast Recovery Rectifier in a SOD-123FL package. While alternatives in the same package exist, they present trade-offs between switching speed and efficiency that require careful engineering evaluation.

AI replacement insight

Electrical riskhigh

Mismatch in recovery time (S2MW) or forward voltage (US2MW) can cause circuit failure or overheating.

Package risklow

Top candidates share the same SOD-123FL package, ensuring physical compatibility.

Can it be replaced directly?

No direct drop-in replacement has been identified. Both S2MW and US2MW have critical differences requiring engineering review.

Best replacement path

US2MW offers faster switching but at the cost of higher power loss. S2MW is a closer parametric match if its slower, general-purpose recovery speed is acceptable for the application.

Main risk

The primary risk is a mismatch in diode recovery time or forward voltage, impacting circuit timing, efficiency, and thermal performance.

Recommended alternatives

Faster recovery time, but higher forward voltage requires thermal validation.

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Alternative comparison matrix

Feature / factor	RS2MW	US2MW	S2MW	Compatibility / risk
Package	SOD-123FL	SOD-123FL	SOD-123FL	SOD-123FL — Package matches, enabling form-factor compatibility.; S2MW: Package matches, enabling form-factor compatibility.
Voltage	1.3V	1.7V @ 2A	1.1V @ 2A	1.7V @ 2A / 1.1V @ 2A — Higher forward voltage will increase power dissipation and heat. Thermal analysis is required.; S2MW: Lower forward voltage improves efficiency.
Current	2A	2A	2A	2A — Average rectified current rating matches the target.; S2MW: Average rectified current rating matches the target.
Application	500ns (Fast)	75ns (Ultrafast)	Unknown (General Purpose)	75ns (Ultrafast) / Unknown (General Purpose) — Significantly faster recovery time is an upgrade for high-frequency applications.; S2MW: Target is a Fast Recovery diode (500ns); candidate's recovery time is unspecified and may be too slow.

Application & sourcing insights

Questions & answers

The best alternative depends on your priority. US2MW is faster but less efficient (higher Vf). S2MW is more efficient (lower Vf) but its recovery time is unknown and likely slower. Both require careful review.