HT7833-A
EVVO
Needs validationmedium risk
HT7833-A is a possible 3.3 V LDO alternate if the exact SOT-23 pinout is confirmed.
Best Alternatives to 662K
662K is a 3.3 V, 300 mA SOT-23 CMOS LDO. Current catalog alternates need FAE review because pinout is not verified.
AI replacement insight
Electrical riskmedium
Check dropout, IQ, accuracy, and capacitor ESR.
Package riskhigh
Most candidates are SOT-223 or SOT-89.
Firmware risklow
No digital interface.
Sourcing riskmedium
Some lifecycles are '-' in catalog.
Can it be replaced directly?
Direct replacement for 662K should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Check HT7833-A first only if its exact SOT-23 order code and pinout match 662K.
Main risk
Package and pinout uncertainty, plus LDO stability and dropout differences.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | 662K | HT7833-A | LDL1117S33R | BL8072CLTR33 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23 | SOT-23/SOT-89/TO-92 | - | - | SOT-223 — not board fit |
| Pinout | 3-pin SOT-23 | 3 pins | - | - | 3-pin — functions not mapped |
| Voltage | 3.3 V, 8 V max | 3.3 V, 12 V max | - | - | 3.3 V, 18 V max — VIN margin higher |
| Current | 300 mA | 450 mA | - | - | 1.2 A — higher rating |
| Temperature | -40 to 85 C | -40 to 85 C | - | - | -40 to 125 C — wider range |
Application & sourcing insights
Questions & answers
Verified drop-in options for 662K 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.