What risks should I check before replacing SS56SMC?

Key risks include changes in forward voltage (Vf), which affects power dissipation and efficiency, and ensuring the replacement's voltage (Vr) and current (Io) ratings meet or exceed the original's with sufficient margin.

SS56SMC Alternatives, Datasheet & Cross Reference | BORN

SS56SMC is a 60V, 5A Schottky rectifier in a DO-214AB (SMC) package, used for high-efficiency rectification. Finding a replacement involves matching the package, voltage, current, and the characteristically low forward voltage of a Schottky diode.

AI replacement insight

Electrical riskmedium

Differences in forward voltage (Vf) and voltage rating margin require circuit analysis.

Package risklow

All viable candidates use the same DO-214AB (SMC) package.

Sourcing risklow

This is a common diode type available from multiple manufacturers.

Can it be replaced directly?

Direct replacement for SS56SMC should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Upgrade to a higher voltage part like SS510SMC or a higher current part like SK106C, depending on application needs.

Main risk

The primary risk is increased power dissipation if a replacement has a higher forward voltage (Vf).

Recommended alternatives

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

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Alternative comparison matrix

Feature / factor	SS56SMC	SS510SMC	SK106C	Compatibility / risk
Package	DO-214AB (SMC)	DO-214AB (SMC)	DO-214AB (SMC)	DO-214AB (SMC) — Package is physically compatible.; SK106C: Package is physically compatible.
Voltage	60V	100V	60V	100V / 60V — Higher voltage rating provides more design margin.; SK106C: Identical voltage rating lacks safety margin.
Current	5A	5A	10A	5A / 10A — Average rectified current matches target.; SK106C: Higher current rating provides more capability.
Forward Voltage	0.70V @ 5A	0.85V @ 5A	0.75V @ 10A	0.85V @ 5A / 0.75V @ 10A — Higher Vf increases power loss and heat.; SK106C: Vf at 5A is likely comparable but needs datasheet verification.

Application & sourcing insights

Questions & answers

Verified drop-in options for SS56SMC 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.