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Best Alternatives to SPX3819M5-L-3-3

Package: SC-74A, SOT-753MaxLinear, Inc.Voltage Regulators - LinearSeries: -Package: BulkVoltage - Input (Max): 16VVoltage - Output (Min/Fixed): 3.3VVoltage - Output (Max): -

SPX3819M5-L-3-3 is a discontinued 3.3V 500mA SOT-23-5 LDO. The active /TR order code is the best path, with pinout checks required.

AI replacement insight

Electrical riskhigh

Vin, Iq, dropout, PSRR need checks.

Package riskmedium

SOT-23-5 shown, but pinout missing.

Firmware risklow

Analog LDO; enable polarity still matters.

Sourcing riskmedium

Target is discontinued at Digi-Key.

Can it be replaced directly?

No pin-compatible replacement is verified from the provided fields.

Best replacement path

Use SPX3819M5-L-3-3/TR first, then review cataloged LDO alternates.

Main risk

Pinout and Vin range are not fully proven for alternates.

Recommended alternatives

3
MIC5219-3.3YM5-TR package
MIC5219-3.3YM5-TR

Microchip Technology / Micrel

Needs validationmedium risk

MIC5219 is a cataloged 3.3V SOT-23-5 LDO candidate with electrical checks required.

View details

Alternative comparison matrix

Feature / factorSPX3819M5-L-3-3MIC5219-3.3YM5-TRRT9013-33GBAP2112K-3.3TRG1Compatibility / risk
PackageSOT-23-5SOT-23-5SOT-23-5SOT25SOT-23-5 / SOT25 — artifact; RT9013-33GB: artifact; AP2112K-3.3TRG1: style may differ
Pinoutnot providednot providedVIN GND EN NC VOUTVIN GND EN NC VOUTnot provided / VIN GND EN NC VOUT — no pin claim; RT9013-33GB: target missing; AP2112K-3.3TRG1: target missing
Voltage3.3V, 2-18V in3.3V, Vin unk2.2-5.5V in3.3V, Vin unk3.3V, Vin unk / 2.2-5.5V in — Vin needed; RT9013-33GB: major derating; AP2112K-3.3TRG1: Vin needed
Current500mA500mA peak500mA600mA500mA peak / 600mA — peak vs target; RT9013-33GB: artifact; AP2112K-3.3TRG1: artifact
Temperature-40 to 125Cunknownunknown-unknown — not in artifact; RT9013-33GB: not in artifact
ApplicationLDO with enable--LDO, EN, dischargeLDO, EN, discharge — feature impact

Application & sourcing insights

Questions & answers

SPX3819M5-L-3-3/TR is the best path from the provided evidence because it is the active same-series order code.