LDL1117S50R
STMicroelectronics
Needs validationlow risk
Upgrade path from STMicroelectronics with higher current, much lower dropout, and wider temperature range.
Best Alternatives to SCJT1117B-5.0
SCJT1117B-5.0 is a 5V, 1A LDO voltage regulator in a SOT-223 package. Key alternatives include upgraded parts with lower dropout voltage like the LDL1117S50R, and automotive-grade options such as the NCV1117ST50T3G.
AI replacement insight
Electrical risklow
Many compatible LDOs exist. Verify dropout voltage and temperature range for the specific application.
Package risklow
SOT-223 is a standard package with a common pinout for this function, minimizing layout changes.
Sourcing risklow
This is a common LDO type with numerous cross-vendor options available from multiple distributors.
Can it be replaced directly?
Direct replacement for SCJT1117B-5.0 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Upgrade to the LDL1117S50R for better performance (lower dropout, higher current) or the NCV1117ST50T3G for automotive-grade reliability.
Main risk
The main risk is selecting a substitute with a lower current rating (< 1A) or a more restrictive operating temperature range, which could cause system failure.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | SCJT1117B-5.0 | LDL1117S50R | NCV1117ST50T3G | ME6118A50B3G | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-223 | SOT223 | SOT-223 | SOT-223 | SOT223 / SOT-223 — Package is form-fit compatible.; NCV1117ST50T3G: Package is form-fit compatible.; ME6118A50B3G: Package is form-fit compatible.; NCP1117ST50T3G: Package is form-fit compatible. |
| Current | 1.0A | 1.2A | - | - | 1.2A — Higher output current provides more design margin. |
| Voltage | 1.3V @ 1A | 350mV @ 1.2A | 20V | 1.3V @ 1A | 350mV @ 1.2A / 20V / 1.3V @ 1A — Significantly lower dropout voltage improves efficiency and low Vin operation.; NCV1117ST50T3G: Higher maximum input voltage.; ME6118A50B3G: Dropout voltage is comparable.; NCP1117ST50T3G: Higher maximum input voltage. |
| Temperature | -20°C to 125°C | -40°C to 125°C | -40°C to +125°C | -40°C to +125°C | -40°C to 125°C / -40°C to +125°C — Wider operating temperature range.; NCV1117ST50T3G: Wider operating temperature range.; ME6118A50B3G: Wider operating temperature range.; NCP1117ST50T3G: Reduced minimum operating temperature. |
| Application | Commercial | - | AEC-Q100 | - | AEC-Q100 — Automotive qualification offers higher reliability. |
Application & sourcing insights
Questions & answers
Verified drop-in options for SCJT1117B-5.0 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.