
Fairchild Semiconductor
LM7805CT is the closest cataloged 5V TO-220-3 alternative, pending pinout review.
LM7805T replacements should be reviewed as fixed 5V linear regulators in TO-220-3. Pinout evidence is missing, so no drop-in claim is made.
Check Vin, load current, dropout, and caps.
Kept parts list TO-220-3.
No firmware interface.
Some near matches are obsolete or downgraded.
No pin-compatible replacement is confirmed from the provided fields.
Start with LM7805CT, then verify pin functions, capacitors, and thermal margin.
Pinout and regulator stability requirements are not verified.

Fairchild Semiconductor
LM7805CT is the closest cataloged 5V TO-220-3 alternative, pending pinout review.
| Feature / factor | LM7805T | LM7805CT | LM1084IT-5.0 | LM317T | Compatibility / risk |
|---|---|---|---|---|---|
| Package | TO-220-3 | TO-220-3 | TO-220-3 | TO-220-3 | TO-220-3 — same package; LM1084IT-5.0: same package; LM317T: same package; LM1117T-5.0: same package |
| Pinout | 3 pins | 3 pins | 3 pins | adjustable 3-pin | 3 pins / adjustable 3-pin — functions missing; LM1084IT-5.0: functions missing; LM317T: likely rewiring; LM1117T-5.0: functions missing |
| Voltage | 5V out, 35V in | 5V out, 35V in | 5V out, 12V in | 1.2-37V adj | 5V out, 35V in / 5V out, 12V in / 1.2-37V adj / 5V out, Vin missing — same ratings; LM1084IT-5.0: Vin limit; LM317T: needs setting; LM1117T-5.0: Vin absent |
| Current | 1.2A | 1.5A | 5A | 1.5A | 1.5A / 1A — higher output; LM1084IT-5.0: higher output; LM317T: higher output; LM1117T-5.0: lower output |
| Temperature | 0 to 125C | 0 to 125C | -40 to 125C | -40 to 125C | 0 to 125C / -40 to 125C — same range; LM1084IT-5.0: wider range; LM317T: wider range; LM1117T-5.0: wider range |
LM7805CT is the closest listed candidate, but pinout and capacitor requirements still need FAE review.