NCP1117ST33T3G
onsemi
Needs validationmedium risk
NCP1117ST33T3G is a close 3.3V 1A SOT-223 LDO candidate for CJT1117B-3.3.
Best Alternatives to CJT1117B-3.3
CJT1117B-3.3 is a 3.3V 1A SOT-223 LDO. Several 1117-class LDOs may work, but none is verified as direct pin-to-pin here.
AI replacement insight
Electrical riskmedium
Check dropout, accuracy, and input margin.
Package riskmedium
SOT223 aliases and pin count conflicts exist.
Firmware risklow
No digital interface involved.
Sourcing riskmedium
Generic 1117 codes vary by maker.
Can it be replaced directly?
No verified direct replacement is established from the provided fields.
Best replacement path
Start with NCP1117ST33T3G for closest 1A class, or LDL1117S33R for lower dropout after review.
Main risk
Pinout and capacitor stability are not fully verified.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | CJT1117B-3.3 | NCP1117ST33T3G | LDL1117S33R | BL8072CLTR33 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-223 | SOT-223 | - | - | SOT-223 — same package |
| Pinout | not stated | GND/VOUT/VIN evidence | - | - | not stated — no pinout evidence |
| Voltage | 3.3V, 15V in | 3.3V, 20V in | - | - | 3.3V, 18V in — input rating higher |
| Current | 1A | 1A | - | - | 1.2A — more current |
| Temperature | -40 to 125C | +125C max | - | - | +125C max — range appears covered |
| Application | 1.15V typ dropout | - | 350mV @1.2A | - | 350mV @1.2A — lower dropout |
Application & sourcing insights
Questions & answers
NCP1117ST33T3G is the closest 3.3V 1A SOT-223 candidate; LDL1117S33R is stronger electrically but still needs review.