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Best Alternatives to K34

Package: SOD-123FLGOODWORKDiodesReverse Voltage (Vr): 40 VForward Current (If): 3 AForward Voltage (Vf): 0.55 VPeak Forward Surge Current: 80 AOperating Temperature: -65°C to +150°C

K34 is a popular 40V, 3A Schottky diode in a SOD-123FL package. Several pin-compatible alternatives like DSS34 and DSK34 exist, offering direct replacement options from multiple manufacturers.

AI replacement insight

Package risklow

All top candidates use the same SOD-123FL package.

Electrical riskmedium

Risk is low for direct matches, but medium for upgrades due to higher forward voltage affecting thermals.

Sourcing risklow

The target and its best alternatives are multi-sourced parts, ensuring good availability.

Can it be replaced directly?

Yes, DSS34 and DSK34 are direct replacements for K34, matching all critical parameters and package.

Best replacement path

Use DSS34 or DSK34 for a direct, pin-compatible replacement.

Main risk

When considering voltage upgrades like DSS310, the main risk is increased power loss due to higher forward voltage (Vf).

Recommended alternatives

4
DSK34 package
DSK34

TWGMC

Needs validationlow risk

A pin-compatible alternative from multiple manufacturers with identical key specs.

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Alternative comparison matrix

Feature / factorK34DSK34DSS34DSK36Compatibility / risk
PackageSOD-123FLSOD-123FL--SOD-123FL — Package matches target.
Voltage40V40V--60V — Higher voltage rating provides more margin.
Current3A3A--3A — Forward current matches.
Forward Voltage550mV550mV @ 3A--550mV @ 3A — Forward voltage matches.
Diode TypeSchottky-Schottky-Schottky — Diode type matches.

Application & sourcing insights

Questions & answers

DSS34 and DSK34 are excellent alternatives, matching the key electrical specifications (40V, 3A, 0.55Vf) and package (SOD-123FL).