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L78M12CDT-TR
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STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+47@@ -0,0 +1,47 @@+# L78M12CDT-TR++**STMicroelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)++L78M12CDT-TR from STMicroelectronics, in a TO-252-2(DPAK). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | INPUT | power_in | Unregulated positive DC input. Absolute maximum 35 V for 5-18 V output versions (40 V for 20/24 V versions). Bypass to GND with ~0.33 uF ceramic close to the pin for stability and transient rejection. |+| 2 | GND | power_in | Common ground reference for input and output. Electrically connected to the DPAK tab (heatsink); the tab must be soldered to a copper pour that acts as both the ground return and the primary heat-dissipation path (RthJA ~= 100 C/W without additional heatsinking). |+| 3 | OUTPUT | power_out | Regulated +12 V output, 500 mA nominal (internally current-limited). Requires a 0.1 uF ceramic bypass close to the pin to ensure loop stability and transient response. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | TO-252-2(DPAK) |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `L78M12CDT-TRCDT-TR`+- `L78M12CDT-TRCDT`+- `L78M12CDT-TRCV`+- `L78M12CDT-TRABV`+- `L78M12CDT-TRCV`+- `L78M12CDT-TRCH`++## CAD (KiCad official)++- Symbol: `L78M12CDT-TR`+- Footprint: `Package_TO_SOT_SMD:TO-252-2`+- 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/l78m12cdt-tr.pdf) (46 pp, sha256 `bf25de1549fb4045`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/l78m12cdt-tr-datasheet.pdf)
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