LM317G
UMW
Needs validationmedium risk
LM317G is the closest catalog match but needs pinout review for LM317DCYR.
Best Alternatives to LM317DCYR
LM317DCYR is an adjustable positive regulator in SOT-223. The closest listed alternate is LM317G, but pinout review is required.
AI replacement insight
Electrical riskmedium
LM317G aligns; LM1117S-ADJ is derated.
Package riskmedium
SOT-223 matches but pin count differs.
Firmware risklow
No firmware interface.
Sourcing risklow
Kept parts are catalog matched.
Can it be replaced directly?
No verified pin-compatible replacement is proven from the provided fields.
Best replacement path
Review LM317G first, then verify SOT-223 pinout and tab counting.
Main risk
Pin count and pinout are not confirmed.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | LM317DCYR | LM317G | LM1117S-ADJ | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-223 | SOT-223 | SOT-223 | SOT-223 — same package text; LM1117S-ADJ: same package text | |
| Pinout | 4 pins | 3 pins | 3 pins | 3 pins — count mismatch; LM1117S-ADJ: count mismatch | |
| Voltage | 40V in, 1.25-37V out | 40V in, 1.2-37V out | 20V in max | 40V in, 1.2-37V out / 20V in max — range aligns; LM1117S-ADJ: large derating | |
| Current | 1.5A | 1.5A | 1A | 1.5A / 1A — same rating; LM1117S-ADJ: lower load | |
| Temperature | 0 to 125C | 0 to 125C | - | 0 to 125C — same range | |
| Application | adjustable positive | - | adjustable positive | adjustable positive — same role |
Application & sourcing insights
Questions & answers
LM317G is the closest listed alternate by function and ratings, but it needs pinout review.