Is there a pin-compatible replacement for DSK120?

Several parts exist in the same SOD-123FL package, making them mechanically compatible. However, none are functionally identical (pin-to-pin) as they are different diode types (e.g., fast recovery instead of Schottky), which affects electrical performance.

What risks should I check before replacing DSK120?

Verify the replacement's diode type. The DSK120 is a Schottky diode. Using a standard or fast-recovery diode will increase forward voltage drop (reducing efficiency) and slow down switching speed, which may not be acceptable for your application.

DSK120 Alternatives, Datasheet & Cross Reference | Luguang Electronic Technology Co., Ltd.

Find and compare alternatives for the LGE DSK120, a 1A 200V Schottky diode in a SOD-123FL package. This guide helps you evaluate potential replacements, focusing on critical parameters like diode type, forward voltage, and switching speed.

AI replacement insight

Electrical riskhigh

Mismatch in diode type (Schottky vs. others) affects forward voltage and switching speed.

Package risklow

All candidates share the same SOD-123FL package.

Can it be replaced directly?

No direct drop-in replacement was found. All candidates are different diode types (general-purpose or fast recovery) which have higher power loss and slower switching speeds than the target Schottky diode.

Best replacement path

Search for another Schottky diode with Vr ≥ 200V, If ≥ 1A, and Vf ≤ 0.9V in a SOD-123FL package.

Main risk

The primary risk is substituting a non-Schottky diode, which can cause circuit malfunction, overheating, or reduced efficiency due to higher forward voltage and slower recovery time.

Recommended alternatives

A functional alternative in the same package with a higher voltage rating, but is a general-purpose diode with higher forward voltage.

View details

Alternative comparison matrix

Feature / factor	DSK120	SOD4007	FR107W	ES1JW	Compatibility / risk
Package	SOD-123FL	SOD-123FL	-	-	SOD-123FL — Mechanically compatible package.
Voltage	200V	1000V	-	-	600V — Candidate has a higher voltage rating.
Current	1.0A	1.0A	-	-	1.0A — Forward current matches.
Diode Type	Schottky	General Purpose	-	-	Superfast Recovery — Target is Schottky. Superfast is fast (35ns) but has different Vf characteristics.
Forward Voltage	0.9V	1.1V	-	-	1.3V — Significantly higher forward voltage increases power loss.

Application & sourcing insights

Questions & answers

The best alternative would be another Schottky diode with at least 200V reverse voltage, 1A forward current, and a forward voltage of 0.9V or less, in the same SOD-123FL package. No exact match was found in this review; manual search is required.