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Best Alternatives to SE8633K2-HF

Package: SOT89-3Seaward ElecPMIC - Voltage Regulators - LinearOutput Voltage: 3.3 VOutput Current: 200 mAInput Voltage Range: 4.3 V to 65 V (80 V max)Quiescent Current: 1.8 µAOutput Accuracy: ±2%

SE8633K2-HF is a high-voltage (65V) LDO regulator with ultra-low quiescent current in a SOT89-3 package. Finding a direct replacement is challenging due to its high input voltage rating.

AI replacement insight

Electrical riskhigh

All candidates have significantly lower max input voltage ratings.

Package riskmedium

Candidates have similar or matching packages, but pinout and footprint must be verified.

Can it be replaced directly?

Direct replacement for SE8633K2-HF should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Parametric alternatives exist but have lower maximum input voltage ratings (40-42V). Careful review of the application's actual voltage stress is required.

Main risk

The primary risk is electrical overstress due to the lower maximum input voltage of all available candidates.

Recommended alternatives

2
TPL820F33-89TR package
TPL820F33-89TR

3PEAK

Needs validationmedium risk

A functional alternative in a matching SOT89-3 package, but with a lower maximum input voltage and output current.

View details

Alternative comparison matrix

Feature / factorSE8633K2-HFTPL820F33-89TRSSP7903P33PRAlt 3Compatibility / risk
PackageSOT89-3SOT89-3SOT89-3LSOT89-3 / SOT89-3L — Package matches target.; SSP7903P33PR: Package is similar but requires footprint verification.
Voltage65V42V40V42V / 40V — Max input voltage is significantly lower.; SSP7903P33PR: Max input voltage is significantly lower.
Current200mA180mA1.0A180mA / 1.0A — Output current is slightly lower.; SSP7903P33PR: Output current is higher.
Quiescent Current1.8µA2µA-2µA — Quiescent current is comparable.
Temperature-40°C to 105°C--40°C to 85°C-40°C to 85°C — Max operating temperature is lower.

Application & sourcing insights

Questions & answers

Verified drop-in options for SE8633K2-HF 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.