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Best Alternatives to 1N4148WX-TP

Package: SOD323Micro Commercial Components Corp.Discrete Semiconductor ProductsMfr: Micro Commercial CoPackage: Tape & Reel (TR); Cut Tape (CT); Digi-Reel®Diode Type: StandardVoltage - DC Reverse (Vr) (Max): 75 VCurrent - Average Rectified (Io): 150mA

The 1N4148WX-TP is a popular high-speed switching diode in a compact SOD323 package. Finding a suitable replacement requires matching its fast 4ns recovery time, 100V rating, and physical footprint for high-frequency applications.

AI replacement insight

Electrical riskhigh

Using a part with slower recovery time (trr > 4ns) will cause performance failure in high-speed applications.

Package risklow

Several alternatives exist in the same SOD323 package, minimizing layout changes.

Can it be replaced directly?

Direct replacement for 1N4148WX-TP should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

BAS316-QX is the most promising replacement, matching the package, voltage, and critical 4ns recovery speed.

Main risk

The main risk is substituting with a diode that has a slower reverse recovery time (trr), which is unsuitable for high-frequency circuits.

Recommended alternatives

2
BAS316-QX package
BAS316-QX

Nexperia USA Inc.

Needs validationlow risk

Strong alternative in the same SOD323 package with matching voltage and speed, plus higher current rating.

View details

Alternative comparison matrix

Feature / factor1N4148WX-TPBAS316-QXBAS321,115Alt 3Compatibility / risk
PackageSOD323SOD323 (SC-76)SOD323 (SC-76)SOD323 (SC-76) — Physically compatible package.; BAS321,115: Physically compatible package.
Voltage100V100V200V100V / 200V — Reverse voltage rating matches.; BAS321,115: Higher voltage rating provides more margin.
Current150mA250mA250mA250mA — Higher current rating provides more margin.; BAS321,115: Higher current rating is an upgrade.
Speed4ns4ns50ns4ns / 50ns — Reverse recovery time matches, suitable for high-speed switching.; BAS321,115: Significantly slower recovery time, not for high-speed use.
Forward Voltage1V @ 50mA1.25V @ 150mA-1.25V @ 150mA — Slightly higher forward voltage may increase power loss.

Application & sourcing insights

Questions & answers

Verified drop-in options for 1N4148WX-TP 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.