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Best Alternatives to 15L50SP

Package: TO-277AI-SENSINGDiodes - Rectifiers - SingleReverse Voltage (Vr): 50 VForward Current (If): 15 AForward Voltage (Vf) @ If: 0.52 V @ 15 APackage / Case: TO-277Operating Temperature: -55°C to +150°C

The 15L50SP is a 50V, 15A Trench MOS Schottky Rectifier in a TO-277 package, valued for its low forward voltage and high efficiency. Several alternatives are available, offering trade-offs in voltage, current, and efficiency that may suit your application.

AI replacement insight

Electrical riskmedium

Several candidates have higher forward voltage (Vf), increasing power loss. Some have lower voltage ratings, which is a critical failure risk.

Package risklow

All reviewed candidates use the same TO-277 package, suggesting good physical compatibility. Pinout should be verified from datasheets.

Can it be replaced directly?

Direct replacement for 15L50SP should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

SP1560L is the most promising alternative, offering an upgraded voltage rating (60V) with nearly identical current and forward voltage characteristics. It is a strong candidate for a pin-to-pin replacement, pending pinout verification.

Main risk

The primary risk when substituting for 15L50SP is selecting a part with a significantly different forward voltage (Vf), which can impact power efficiency and thermal performance, or a part with an insufficient voltage rating.

Recommended alternatives

4
SP1560L package
SP1560L

Jiangsu Changjing Electronics Technology Co., Ltd.

Needs validationlow risk

A strong alternative with a higher voltage rating and matching package, requiring review of its slightly higher forward voltage.

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Alternative comparison matrix

Feature / factor15L50SPSP1560L20V80SPST15100LCompatibility / risk
PackageTO-277, 3-pinTO-277, 3-pinTO-277, 3-pinTO-277, 3-pinTO-277, 3-pin — Package and pin count match the target.; 20V80SP: Package and pin count match the target.; ST15100L: Package and pin count match the target.; SP1545L: Package and pin count match the target.
Voltage50V60V80V100V60V / 80V / 100V / 45V — Higher reverse voltage provides more design margin.; 20V80SP: Higher reverse voltage.; ST15100L: Significantly higher reverse voltage.; SP1545L: Lower reverse voltage rating is a critical risk.
Current15A15A20A15A15A / 20A — Average forward current matches the target.; 20V80SP: Higher average forward current.; ST15100L: Average forward current matches.; SP1545L: Average forward current matches.
Forward Voltage0.52V @ 15A0.55V @ 15A0.62V @ 20A0.74V (Max)0.55V @ 15A / 0.62V @ 20A / 0.74V (Max) / 0.48V @ 15A — Slightly higher forward voltage may increase power loss.; 20V80SP: Higher forward voltage will increase power loss.; ST15100L: Significantly higher forward voltage will increase power loss.; SP1545L: Lower forward voltage improves efficiency.

Application & sourcing insights

Questions & answers

Verified drop-in options for 15L50SP 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.