SE8633X2-HF
SEAWARD
Needs validationlow risk
Pin-compatible upgrade from the same manufacturer with superior input voltage tolerance (80V) and lower power consumption.
Best Alternatives to SE8533K1-HF
SE8533K1-HF is a 3.3V, 200mA low-dropout (LDO) regulator in a SOT-89 package, notable for its very low quiescent current and wide input voltage range up to 35V. Several pin-compatible and functional alternatives are available for design flexibility and upgrades.
AI replacement insight
Electrical riskmedium
Some candidates have a lower max input voltage. Must verify against system requirements.
Package risklow
Most candidates are SOT-89, but pinout must be verified from datasheets as it can vary.
Can it be replaced directly?
Direct replacement for SE8533K1-HF should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Start with Datasheet verified or Strong match candidates for SE8533K1-HF, then review parametric alternatives for package and electrical fit.
Main risk
The primary risk when substituting is a mismatch in maximum input voltage or pinout. Some alternatives have lower voltage ratings.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | SE8533K1-HF | SE8633X2-HF | SSP7903P33PR | HT7333 | Compatibility / risk |
|---|---|---|---|---|---|
| Voltage | 35V | 80V | 40V | 20V | 80V / 40V / 20V / 10V — Max input voltage is significantly higher.; SSP7903P33PR: Max input voltage is higher.; HT7333: Max input voltage is lower.; HT7233: Max input voltage is significantly lower. |
| Package | SOT-89 | SOT-89 | SOT89-3L | SOT-89 | SOT-89 / SOT89-3L — Package and pinout are compatible.; SSP7903P33PR: Package and pinout are compatible.; HT7333: Package and pinout are compatible.; HT7233: Package footprint is identical. |
| Current | 2.5µA | 1.8µA | 1.6µA | 1.5µA | 1.8µA / 1.6µA / 1.5µA / 300mA — Quiescent current is lower.; SSP7903P33PR: Quiescent current is lower.; HT7333: Quiescent current is lower.; HT7233: Higher output current capability. |
| Pinout | 1/2/3 | - | - | - | GND/VIN/VOUT is 2/3/1 — Pinout differs, requires board redesign. |
Application & sourcing insights
Questions & answers
Verified drop-in options for SE8533K1-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.