MC7812CTG

@@ -0,0 +1,45 @@+# MC7812CTG++**onsemi** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220++MC7812CTG from onsemi, in a TO-220. 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 | Vin | power_in | Unregulated positive input voltage. For a 12 V output the input must remain typically 2.0 V above Vout even at the ripple trough (dropout ~2.0 V); absolute maximum input is 35 Vdc. A 0.33 uF ceramic (Cin) is recommended if the regulator is located an appreciable distance from the power-supply filter. |+| 2 | GND | power_in | Common ground reference shared by the input and output. In the TO-220 (Case 221AB) package the heatsink tab is electrically connected to Pin 2 (GND), so the tab may be bonded directly to a grounded heatsink without an insulator. |+| 3 | Vout | power_out | Regulated +12 V positive output, capable of delivering in excess of 1.0 A with adequate heatsinking (short-circuit current limit typ. 0.2 A at Vin=35 V; peak output current typ. 2.2 A). An output capacitor Co (>=0.1 uF) is not required for stability but improves transient response. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | onsemi |+| Package | TO-220 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `MC7812CTGCTG`+- `MC7812CTGCT`+- `MC7812CTGD2T`+- `MC7812CTGDT`++## CAD (KiCad official)++- Symbol: `MC7812CTG`+- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`+- 3D model: TO-220 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [onsemi datasheet](https://www.onsemi.com/pdf/datasheet/mc7812ct-d.pdf) (31 pp, sha256 `ad3f70896343dcf0`, 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/mc7812ctg-datasheet.pdf)

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