ZHCSH33Y September 1997 – April 2020 LM317
PRODUCTION DATA.
| THERMAL METRIC(1) | LM317 | UNIT | ||||
|---|---|---|---|---|---|---|
| DCY
(SOT-223) |
KCS
(TO-220) |
KCT
(TO-220) |
KTT
(TO-263) |
|||
| 4 PINS | 3 PINS | 3 PINS | 3 PINS | |||
| Rθ(JA) | Junction-to-ambient thermal resistance | 66.8 | 23.5 | 37.9 | 38.0 | °C/W |
| RθJC(top) | Junction-to-case (top) thermal resistance | 43.2 | 15.9 | 51.1 | 36.5 | °C/W |
| RθJB | Junction-to-board thermal resistance | 16.9 | 7.9 | 23.2 | 18.9 | °C/W |
| ψJT | Junction-to-top characterization parameter | 3.6 | 3.0 | 13.0 | 6.9 | °C/W |
| ψJB | Junction-to-board characterization parameter | 16.8 | 7.8 | 22.8 | 17.9 | °C/W |
| RθJC(bot) | Junction-to-case (bottom) thermal resistance | NA | 0.1 | 4.2 | 1.1 | °C/W |